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3D Enterprises of Lexington, Kentucky (1)
45634brgth6 (1)
? R. Porter (1)

A & M Concrete Products Co. of Clear Lake, Iowa (1)
A & P Roberts Co. of Pencoyd, Pennsylvania (39)
A Bentley & Sons (1)
A Teichert & Sons Inc of Sacramento, California (1)
A&L Construction Co. of Hattiesburg, Mississippi (1)
A. E. Ray (1)
A. Guthrie & Co. of St. Paul, Minnesota (9)
A. I. Savin Construction Co. of Hartford, Connecticut (1)
A. Ives (1)
A. M. Cohron & Sons of Des Moines, Iowa (1)
A. Martini & Co. (1)
A. Morton Thomas & Associates of Rockville, Maryland (1)
A. Olson Construction Co. of Waterloo, Iowa (20)
A. P. Boller and Henry Hodge-designers (1)
A. Soda & Son (1)
A. V. Saph (1)
A.A. Davis Construction Co. (1)
A.C Wood Construction Co. (1)
A.C. Boyle & Co. of McGregor, Iowa (3)
A.D. Briggs & Co. of Springfield, Massachusetts (5)
A.D. O'Brien of Wilmington, North Carolina (1)
A.E. Shorthill Co. (2)
A.G. Ryan & Sons (1)
A.J. Cheff Construction Co. (1)
A.J. Yawger Co. of Indianapolis, Indiana (2)
A.L. Cook Construction Co. of Ottawa, Kansas (1)
A.L. Greenberg Iron Co. (1)
A.M. Kennedy & Sons (27)
A.P. Poirot Construction Co. of Belleville, Illinois (3)
A.S. Lyon, (1)
A.S. Miller & Sons of Eugene, Oregon (1)
A.W. Stedman of Mauch Chunk, Pennsylvania (1)
A.Y. Bayne & Co. of Minneapolis, Minnesota (11)
ABKJ Inc. of Seattle, Washington & Bangalore/Bengaluru, Karnataka, Republic of India (2)
AECOM of Los Angeles. California (3)
APAC of Kansas City, Kansas (1)
ARUP of London, England, United Kingdom (1)
Aadams, Thomas M. (1)
Abarca, Isidoro (1)
Aberthaw Construction Co. of Boston, Massachusetts (3)
Abraham Sheridan (1)
Abrams, W.A. (2)
Achey, E.D. (1)
Ackley, Joshua (1)
Ackley, Samuel (1)
Acrow Corporation of America of Parsippany, New Jersey (12)
Adain Bros. (1)
Adam, John (1)
Adams Construction Co. (1)
Adams, Arthur C. (2)
Adams, H. C. (1)
Adams, Jack of Endee, New Mexico (1)
Adams, Julius W. (1)
Adams, Milo (2)
Adams, Milo A. of Minneapolis, Minnesota (7)
Adams, W. A. (1)
Adgate, F.W. of Chicago, Illinois (1)
Adolph Green Construction Co. (1)
Advance Construction Co. of Waukesha, Wisconsin. (2)
Aetna Bridge (1)
Agnew Construction Co. (1)
Agnew, Spiro T. (1)
Ake, George (1)
Alabama Bridge Corp. (1)
Alabama Dry Dock & Shipbuilding Co. of Mobile, Alabama (1)
Alabama Road Commission (1)
Alamo Construction Co. of San Antonio, Texas (2)
Albany Bridge Co. (1)
Alberici Constructors of St. Louis, Missouri (1)
Albina Engine & Machine Works of Portland, Oregon (1)
Albinson Construction Co. (1)
Alcoa of Pittsburgh, Pennsylvania (1)
Alden & Lassig Bridge & Iron Works of Chicago, Illinois (6)
Alden, John F. of Cohoes, New York (1)
Alderman, E. S. (1)
Aldrich, W. R. (1)
Alesghem & Sons Rope Co. (1)
Alex Findlay & Co. of Motherwell, North Lanarkshire, Scotland, United Kingdom (2)
Alexander & Charles Provost (1)
Alexander & Higby of Des Moines, Iowa (1)
Alexander & Repass of Des Moines, Iowa (2)
Alexander Brociner (1)
Alexander von Babo (4)
Alexander, W. H. (1)
Alexandria Construction Co. (1)
Alfred Caldwell (1)
Alfred Clas of Milwaukee, Wisconsin (1)
Alfred Cook & James Allen (2)
Alfred M. Felgate (1)
All-Pro Construction Co. (1)
All-Steel Equipment Co. (1)
Allaman, Jacob (1)
Allan A. Myers, Inc. of Malvern, Pennsylvania (1)
Allen & Fulton of Topeka, Kansas (2)
Allen, C. E. (1)
Allen, McEvoy & Co. of Beloit, Wisconsin (2)
Allen, W.W. (1)
Allentown Bridge Co. of Allentown, Pennsylvania (1)
Allied Contractors, Inc. of Omaha, Nebraska (2)
Allied Structural Steel Co. of Chicago, Illinois (4)
Alonzo J. Hammond (1)
Alpine Construction (8)
Alsbury & Co., A.A. (1)
Altman-Rogers Co. of Oklahoma City, Oklahoma (2)
Alton-St. Louis Bridge Co (1)
Altoona Shops, PRR (1)
Alvin John Stewart (3)
Ambrose-Burdsall Co. (1)
Ambursen Hydraulic Construction Co. of Boston, Massachusetts (3)
AmerCom Corp. of Parsippany, New Jersey (1)
American Arch and Culvert Co. of Toledo, Ohio (1)
American Bascule Bridge Co (1)
American Bascule Bridge Corp. of Pensacola, Florida (1)
American Bridge & Iron Co. of Roanoke, Virginia (2)
American Bridge Co. of New York (1,455)
American Bridge Works of Chicago, Illinois (28)
American Civil Constructors of Littleton, Colorado (1)
American Coal Co., and Maryland Coal Co. (1)
American Concrete Co. (1)
American Construction Co. of Chicago, Illinois/Dallas, Texas/Houston, Texas (2)
American Consulting Engineers of Lexington, Kentucky (1)
American Paving & Construction Co. (1)
American Pile Driving Co. of Everett, Washington (1)
American Railway Engineering (1)
American Roads, LLC (4)
American Steel & Wire Co. (2)
Ames Construction Inc. of Burnsville, Minnesota (2)
Amis Construction Co. of Oklahoma City, Oklahoma (2)
Ammann & Whitney of New York City, New York (2)
Ammann, Othmar of Feuerthalen, Canton of Z�rich, Switzerland (12)
Amos Campbell (2)
Amos Melberg Co. of Cedar Rapids, Iowa (8)
Anamosa State Penitentiary Convicts of Anamosa, Iowa (1)
Anden, Van (1)
Andersen Bjornstad Kane of Seattle, Washington (1)
Andersen Construction Co. of Portland, Oregon (1)
Anderson & Barr (1)
Anderson, Albert (1)
Anderson, Gust (1)
Anderson, Lars (1)
Anderson, O.A. (1)
Andrew S. Hallidie-engineer (1)
Andrew Weston Co. of Rouses Point, New York (1)
Andrew, Charles E. (9)
Andrews & Locke of Baltimore, Maryland (1)
Andrews, D. H. (1)
Andrews, David H. (1)
Andrews, George H. (1)
Andrews, Tim (1)
Angeles Gravel & Supply Co. of Port Angeles, Washington (2)
Angelo Campetti (1)
Angus McGuire of Great Falls, Montana (1)
Angwin, Henry R. (19)
Anil Verma Associates, Inc. (1)
Anlaan Construction (2)
Annear, E. H. (2)
Anschutz, W.J. of Saginaw, Michigan (1)
Aparicio, Martin (1)
Apollo Construction (1)
Appleby, Fred L. (3)
Appleby, Fred W. (1)
Appleby-Frodingham Steel Co. of Scunthorpe, North Lincolnshire, England, United Kingdom (1)
Appleton & Davis (1)
Applied EarthWorks, Inc. of Fresno, California (1)
Archibald, Raymond (2)
Archie Alphonso Alexander of Des Moines, Iowa (2)
Architect - Richard Sundeleaf (1)
Arkansas Bridge & Steel Co. (1)
Arkansas Bridge Co. of Kansas City, Kansas (1)
Arkansas General Construction Co. of Little Rock, Arkansas (1)
Arkansas Highway Department (2)
Armajani, Siah of Tehrān, Islamic Republic of Iran (1)
Armour Townsend Granger of Austin, Texas (1)
Armstrong & Sons (1)
Armstrong & Ugland (1)
Armstrong Co. of Chicago, Illinois (1)
Armstrong, J.H. (5)
Arnold M Graton Associates Inc of Ashland, New Hampshire (12)
Arnold, Cecil C. of Seattle, Washington (3)
Arnold, James (1)
Arnold, Justin (1)
Arnold, Samuel A. (3)
Arthur Andersson, designer (1)
Arthur De Wint Foote (2)
Arthur G. Leake & Co. (1)
Arthur H. Neumann & Brothers, Inc. of Des Moines, Iowa (3)
Arthur McMullen Co. of New York City, New York (4)
Artingstall, S. G. of Chicago, Illinois (1)
Artmann, Edwin of Lee, Texas (1)
Arute Brothers (1)
Arvid Grant & Associates of Seattle, Washington (2)
Ash, Charles (1)
Ash, Howard, Needles, & Tammen of Kansas City, Missouri (9)
Ash, John (1)
Ash, John W. (2)
Ash, M. R. (1)
Ash, Sig (1)
Ashley, P. N. (1)
Ashton, Ned L. of Iowa City, Iowa (17)
Associated Contractors Inc. of Monroe, Louisiana (1)
Atkinson-Windle Co. of Chillicothe, Missouri (3)
Atlantic Bridge Co. (4)
Atlantic Bridge Co. of Charlotte, North Carolina (5)
Atlantic Bridge Co. of Greensboro, North Carolina (1)
Atlantic Bridge Co. of Roanoke, Virginia (5)
Atlantic County of New Jersey (1)
Atlantic, Gulf & Pacific Co. of New York City, New York & Sacramento, California (8)
Atlas Machine & Iron Works of Arlington, Virginia (5)
Attica Bridge Co. of Attica, Indiana (35)
Audley General Contractors of Bow, New Hampshire (1)
Ault, J.C. (2)
Ault-Rich Construction Co. of Cassville, Missouri (5)
Austin Bridge & Road, Inc. (alternate name for Austin Bridge Co.)
Austin Bridge Co. of Dallas, Texas/Atlanta, Georgia (39)
Austin Brothers Bridge Co. (alternate name for Austin Bridge Co.)
Austin Road Co. (alternate name for Austin Bridge Co.)
Austin, A.H. of Webster City, Iowa (6)
Austin, George F. of North Kingstown, Rhode Island (1)
Auza, Frank (1)
Awarded 6-Sep-1884 for $7.15 per yd. (1)
Aylett, Philip (1)
Ayres, Richardson of Hope, Arkansas (4)

B&O Mount Clare Shops of Baltimore, Maryland (19)
B&O Railroad (1)
B&P Bridge Co., The (1)
B&W Concrete Co. of Newark, New Jersey (1)
B. D. Freedman (1)
B. Griffin & Son (1)
B. N. Davis of New Orleans, Louisiana (2)
B. Perini & Sons, Inc. of Framingham, Massachusetts (1)
B. W. Candage & Sons of Seal Harbor, Maine (3)
B.E. Curry Building Co. (1)
B.J. McGrann & Co. of Lancaster, Pennsylvania (2)
B.P. Panas & Co. of Houston, Texas (1)
BASKERVILLE & CO ENG'S BIRMINGHAM, AL (1)
BNIM of Kansas City, Missouri (1)
BROWN & MACKENTHUM (1)
Babbitt, Charles (1)
Bagley, C. W. (1)
Bagley, Walter (1)
Bailey Bridge Co, Inc of Abilene, Texas (2)
Bailey Brothers (1)
Bailey, E.W. (1)
Bailey, J.A (1)
Bailey, W.E. (1)
Bainbridge, Charles W. (1)
Baird Brothers of Pittsburgh, Pennsylvania (2)
Baird and Hodges-design engineers (1)
Baker & Koontz of Carthage, Missouri (3)
Baker white pine lumber company (1)
Baker, Ira O. (1)
Balchin, W. G. of Providence, Rhode Island (1)
Baldwin, Archibald Stuart of Winchester, Virginia (1)
Baldwin, Issac (1)
Ball, Charles H. of East Windsor, Massachusetts (4)
Ball, Edward P. (1)
Balsey, Capt. Joseph (1)
Baltimore Bridge Co. of Baltimore, Maryland (7)
Banden, Butin & Bowman (3)
Banfield, T.H. (1)
Bangs, Anson, & Co. (1)
Banta & Mutersbaugh of Lake Charles, LA (1)
Barally & Ingersoll of Rochester, New York (3)
Barber Construction Co. (3)
Barcus, L.G. (2)
Barham Brothers (1)
Barlow & Mackey (1)
Barnes, K.W. (1)
Barnes, W.A. of Storm Lake, Iowa (3)
Barnhardt, F.H. (1)
Barnsley, George T. (1)
Barnum and Counihan (1)
Barron & Hole (1)
Barrows-Stewart Co. (1)
Bart Moore, Inc. of San Antonio, Texas (4)
Bartlett & Kling Co. of Cedar Rapids, Iowa (4)
Bartlett & Ranney Inc. of San Antonio, Texas (1)
Basic Marine Inc. of Escanaba, Michigan (3)
Basset, W.B. (2)
Bassi, D.M. (2)
Batcheler, Bowen, and Wolverton (1)
Bateman Contracting Co. of Nashville, Tennessee (1)
Bates & Rogers Construction Co. of Chicago, Illinois (16)
Bates, Onward of St. Charles County, Missouri (2)
Bates, R.E. (2)
Bates, Thomas C. (1)
Batson Brothers (1)
Bauer, Jacob L. (1)
Baumert, M. of Astoria (1)
Bay Shipbuilding Corp. of Sturgeon Bay, Wisconsin (1)
Bayne & Hewett of Minneapolis, Minnesota (3)
Beach, Lansing H. (1)
Bean & Co. (1)
Bear Creek Co. (1)
Bear Creek Construction Co. of Landisville, Pennsylvania (1)
Beard, Elmer H. (1)
Beard, John (2)
Beard, R.R. (1)
Beattie & Cornell (1)
Beatty, E.S. of Blair, Nebraska (1)
Bechly, Ernest C. (1)
Bechtel Corporation of San Francisco, California (2)
Beckel Iron Foundry and Machine Shop of Bethlehem, Pennsylvania (6)
Becker, Donald (1)
Becker, M. J. (1)
Beckwith & Quackenbush of Rome, New York & Mohawk, New York (1)
Bedford Foundry & Machine Co. (1)
Bedford Iron Works (1)
Bedwell Co. (1)
Beebe Orchard Co. of Chelan, Washington (1)
Beekman, Green of Oklahoma City, Oklahoma (1)
Beer's Building Co. of Seattle, Washington (1)
Beley Construction Co. of Livingston, Montana (1)
Belin Construction Co. (1)
Bell & Associates of Kansas City, Missouri (2)
Bell & Bell of Watertown, Tennessee (2)
Bell and Breckinridge (1)
Bell, A.C. (1)
Bell-Bockel Co. of Altoona, Pennsylvania (1)
Bellefontaine Bridge & Iron Co. of Bellefontaine, Ohio (30)
Bellefontaine Bridge & Steel Co. (alternate name for Bellefontaine Bridge & Iron Co.)
Bellows, Robert P. (1)
Belmont Iron Works of Chester, Pennsylvania (4)
Belvidere Construction of Belvidere, Illinois (1)
Bement-Witt Lumber Co. of Shell Rock, Iowa (1)
Ben C. Gerwick Co. (3)
Ben Cole & Sons Construction Co. of Ames, Iowa (9)
Ben Construction Co. (1)
Ben Pipes (1)
Bender, P.F. (1)
Benesch of Chicago, Illinois (2)
Benjamin Griffey, who employed David Starick to build the necessary stone-work. The entire cost of the structure was sixty-five thousand dollars. (1)
Benjamin Henry Latrobe II of Philadelphia, Pennsylvania (3)
Benjamin Latrobe (2)
Benjamin Lord (1)
Benjamin M St. John (1)
Benjamin Sweeten (1)
Bennett & Talbot of Greensburg, Pennsylvania (2)
Bennett, A.G. (2)
Bennett, J.D. (1)
Bentley & Sons Co. of Jacksonville, Florida (1)
Bentley And Sons (1)
Benton, Robert (1)
Ben�tez-Rexach, F�lix of Isla de Vieques, Puerto Rico (3)
Berenz & Son Construction (1)
Bergen & Bergen of Franklin, Indiana (1)
Berger Partnership PS of Seattle, Washington (1)
Berger/Abam Engineers, Inc. (1)
Bergmann Associates (1)
Berkeley Steel Co. (1)
Berlin (1)
Berlin Bridge Co. of New Berlin, Connecticut (2)
Berlin Construction Co. of Berlin, Connecticut (41)
Berlin Iron Bridge Co. of East Berlin, Connecticut (163)
Bernhisel Construction Co. of Chicago, Illinois (1)
Berriman & Anderson (1)
Berry, Jacob (3)
Berry, William M. (1)
Bert Stark (1)
Bethlehem Pacific Coast Steel Co. of Seattle, Washington (1)
Bethlehem Steel Bridge Corporation of Steelton, Pennsylvania (4)
Bethlehem Steel Co. of Bethlehem, Pennsylvania (130)
Bette & Cring of Latham, New York (1)
Bibb, C.F. (1)
Bicknell, Warren of Cleveland, Ohio (2)
Big R Manufacturing (2)
Big Wabash Bridge Co. of Carmi, Illinois (1)
Biggs & Pauley of Winfield, Kansas (1)
Bigley, Richard A. (1)
Bill Barnard of Ames, Iowa (1)
Billings Bridge Co. (1)
Billmeyer, Nogel & Co. of Lewisburg, Pennsylvania (1)
Billner, Karl P. (14)
Biltolast Products Inc. of Ft. Payne, Alabama (2)
Bingham, C.A. (1)
Bingham, Henry (1)
Bird, George of Harrisonville, Missouri (3)
Birdsall, George W. (2)
Birkemeier & Sarema of Portland, Oregon (1)
Birnie, Alexander (5)
Bishop, A.D. (12)
Bishop, Jacob (2)
Bishop, Judson W. of St. Paul, Minnesota (1)
Bitner, Jonathan (1)
Bitterell, W.J. of Webster City, Iowa (1)
Bjork, Carl (1)
Black & Veatch of Kansas City, Missouri (1)
Black, William (1)
Blackburn & Whiteside of Mammoth Springs, Arkansas (1)
Blackshire & Blackshare (2)
Blackwell Engineering Co. of Merrifield, Virginia (3)
Blackwell, Roll (1)
Blair, John (1)
Blaisdell, Frank H. (1)
Blaisdell, Hiram W. (1)
Blake, E. J. (1)
Blakeley, C.W. (1)
Bland, J.C. (2)
Blankenstein, E. of Temple, Texas (1)
Blodgett Construction Co. of Kansas City, Missouri (2)
Blodgett, A.M. of Kansas City, Missouri (25)
Bloomfield Bridge & Culvert, Inc. of Bloomfield, Iowa (1)
Blount Brothers Construction Co. of Shreveport, Louisiana (1)
Blow & Cote Inc. of Morrisville, Vermont (8)
Blumschein, E.W. of Ames, Iowa (1)
Blythe, William (1)
Boardman Co. of Oklahoma City, Oklahoma (11)
Bob King (1)
Bock, C.H. (1)
Bodine, S.L. (1)
Bodner, Pierce (1)
Boedecker, Fred (1)
Bogert-Carlough Co. of Paterson, New Jersey (1)
Bohn, H. M. (1)
Bohren, F. (1)
Bohrofen, Mathias of Saarbr�cken, Saarland, Germany (1)
Boise Construction Co. of Boise, Idaho (1)
Boise Iron Works of Boise, Idaho (1)
Boll, Charles (1)
Boller & Hodge of New York, New York (2)
Boller, Alfred P. of Philadelphia, Pennsylvania (8)
Bollman, James (2)
Bollman, Wendel of Baltimore, Maryland (21)
Bond, H.D. of McMinnville, Oregon (1)
Bonebrake, F.T. (1)
Boner, C.P. (1)
Bontrager Construction Co. (1)
Boody, Stone & Co. of Springfield, Massachusetts (1)
Booker, Kiehl & Whipple of Seattle, Washington (1)
Boomer, McGuire & Blakesley of Great Falls, Montana (1)
Booth & Flinn Co. of Pittsburgh, Pennsylvania (7)
Booth & Glinn Co. (1)
Booth & Pomeroy, Inc. of Portland, Oregon (3)
Borchers, Perry E. (1)
Bordwell & Zimmerman of Calistoga, California (1)
Borg & Ericson of Chicago, Illinois (1)
Borneman, August (4)
Borntreger, Moses (1)
Borthwick, Pringle of Philadelphia, Pennsylvania (1)
Boss Construction, Inc. (1)
Boston & Maine Bridge Crew (1)
Boston Bridge Co. (1)
Boston Bridge Works of Boston, Massachusetts (99)
Bothers, Lindstrom (1)
Bottomfield, A.D. (1)
Boudrye, Sam R. (1)
Bowen, W.F. (1)
Bower, Jacob (3)
Bowerman & McCloy of Seattle, Washington (2)
Bowers Construction Co. (1)
Bowers, J.S. of Whitesville, North Carolina (1)
Bowlby, Henry L. (1)
Bowman, Lloyd (2)
Boyd E. Phelps Co. of Michigan City, Indiana (1)
Boyer, George (1)
Boyington, Rust, & Bruce of Chicago, Illinois & Marseilles, Illinois (2)
Boyle, Blair (1)
Boyle, Frank (1)
Boynton & Warriner of Cedar Rapids, Iowa (1)
Brackbill, Christian (1)
Brackett Bridge Co. of Cincinnati, Ohio (23)
Brackett Bridge Co. (likely fabricator). (1)
Braden, Richard J. (1)
Bradley, W. E. (1)
Bradley, William (1)
Brady & Simpson (1)
Braley, Zacheus (1)
Brandt, George (2)
Brandt, Jacob R. (3)
Bras, Glenn E. of Muskogee, Oklahoma (1)
Brasfield & Gorrie, LLC of Birmingham, Alabama (2)
Braun-Fleming-Knollman & Prior of Columbus, Ohio (2)
Bravo Corporation (1)
Brayman Construction Corp (1)
Brazos River Bridge Co. (2)
Breckenridge, W. L. of Chicago, Illinois (1)
Breeding, George W. (1)
Brendlinger, P.F. of Philadelphia, Pennsylvania (6)
Brennan, J.P. (1)
Brennecke & Fay of St. Louis, Missouri (1)
Brereton, T.J. (1)
Bresee, Jared N. (2)
Breslin Construction Co. of Louisville, Kentucky (1)
Bridge Commision (1)
Bridge Construction Corporation of Augusta, Maine (1)
Bridges, C.G. (1)
Bridgewater, John (1)
Briggs, Alexander (3)
Briggs, John C. (1)
Brink, John (2)
Briscoe Construction Co. of Stillwater, Oklahoma (1)
Bristol Steel & Iron Works of St. Louis, Missouri (1)
Britton Bridge, LLC of Knoxville, Tennessee (1)
Britton, Eugene (1)
Britton, Joseph A. (17)
Broad, J. C. (1)
Broadman Co. (1)
Brockman and Walker (1)
Brogan Construction Co. of Des Moines, Iowa (2)
Brolley, Thomas (1)
Bromaugh, Walter (1)
Bronson, R. J. (1)
Bronx Asphalt Corporation of New York City, New York (1)
Brookfield Construction Co. (1)
Brooks & Dahlgren of Oklahoma City, Oklahoma (1)
Brooks & Mixon of Decatur, Alabama (1)
Brooks-Borg of Des Moines, Iowa (1)
Brookville Bridge Co. of Brookville, Ohio (26)
Bros, Hannam-Hickeys of St. Louis, Missouri (1)
Bros, McArthur of New York City, New York (4)
Bros, Wilson of Geneva, Illinois (1)
Broughton Lumber Co. of Underwood, Washington (1)
Broughton, Charles (1)
Broughton, Frank (1)
Brown & Root Inc. of Houston, Texas (10)
Brown Brothers of Lansing, Michigan (1)
Brown, Baxter L. (1)
Brown, Curtis S. (1)
Brown, D.M. (1)
Brown, George I. (1)
Brown, Glenn (1)
Brown, James R. (1)
Brown, Joseph (1)
Brown, Thomas Ellis (3)
Brown, William H. (18)
Brown-Abbott Co. of Dallas, TX (1)
Brubaker, John T. (2)
Brubaker, M. N. (1)
Bruce, R. N. (1)
Bruecker & Granitoid Co. (1)
Bruley, Richard (1)
Brunner, Arnold W. of New York City, New York (1)
Brunnier, H.J. (1)
Bryan, C. A. (1)
Bryant, Josiah (1)
Buchanan Bridge Co. of Bellefontaine, Ohio (1)
Buchanan County Secondary Roads Department of Independence, Iowa (1)
Buchanan, A. of Chambersburg, Pennsylvania (1)
Buchanan, J.W. (6)
Buchholz, C. W. (1)
Buck, Leffert L. of Canton, New York (6)
Buckeye Bridge Co. (1)
Buckeye Bridge Works of Cleveland, Ohio (15)
Buckeye Portland Cement Co. of Bellefontaine, Ohio (1)
Buckingham, Cathernius (2)
Buckland & Taylor Ltd. of North Vancouver, British Columbia, Canada (7)
Buckman, O.H. (3)
Buckner Bros. of Cleburne, Texas (5)
Buckner, John F. of Cleburn, Texas (1)
Bud King Construction Co. of Missoula, Montana (1)
Buddington, J. E. of New Haven, Connecticut (2)
Buffalo Bridge & Iron Works of Buffalo, NY (1)
Bugee, William A. (1)
Bullen Bridge Co. (alternate name for Pueblo Bridge Co.)
Bumpy's Steel Erection of East St. Louis, Illinois (1)
Burch, G.F. (1)
Burch, W. B. (1)
Burdett, F.O. (2)
Burdick Bros. Inc. (1)
Burdine Construction Co. of Magnolia, Arkansas (1)
Bureau of Indian Affairs (2)
Burgan, George (2)
Burger Iron Co. of Mogadore, Ohio (1)
Burgess & Niple of Columbus, Ohio (1)
Burk Construction Co. of New Castle, Indiana (18)
Burke Construction (1)
Burket, Bud (1)
Burket, R. C. (1)
Burkhardt Steel Co. (1)
Burnham & Ives of Bloomington. Illinois (3)
Burnham & Root (1)
Burnham, Daniel H. (1)
Burnham, Joseph B. of Gloucester, Massachusetts (1)
Burns & McDonnell of Kansas City, Missouri (3)
Burns, Edward C. (1)
Burnside, L.E. (1)
Burr, Fred (1)
Burr, Theodore of Torrington, Connecticut (4)
Burr, William (1)
Burr, William H. (2)
Burrington, M.J. (1)
Burrow, Clarence (1)
Burrow, W. C. of Malvern, Arkansas (1)
Burt, George (1)
Burtle, Joe (1)
Burton Construction Co. of Richmond, Virginia (2)
Bush, Lincoln (3)
Bushman Construction Co. of St. Josesph, Missouri (5)
Business Men's League of Durand, Wisconsin (1)
Bussell, Erastus (1)
Butcher & Sweeny (2)
Butler, Alfred D. (3)
Butler, Drury D. (3)
Butler, Fairman & Seufert Inc. (1)
Butler, M. P. (1)
Butler, Merrill (6)
Butler, William (1)
Butler-Ryan Co. of St. Paul, Minnesota (2)
Button, A.E. (1)
Butts, William (1)
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FIGG Engineering Group of Tallahassee, Florida (9)
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Five Shovelmen, The of Sparta, Wisconsin (4)
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Fort Pitt Bridge Works of Pittsburgh, Pennsylvania (35)
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Orrin Backus (1)
Ortega, Enrique (1)
Osage Bridge & Iron Works (1)
Osborn Engineering Co. of Cleveland, Ohio (8)
Osborn-Barnes Construction Co. (1)
Osborne, Richard B. (3)
Osburn, Robert J. (1)
Oscar H. Schmidt, Inc. of St. Joseph, Missouri (1)
Oscar Shields (1)
Ostrander Co. (1)
Oswego Bridge Co. (1)
Otak of Portland, Oregon (1)
Otis Elevator of Farmington, Connecticut (2)
Otis Hamar (1)
Ottawa Bridge Co. (1)
Ottinger Brothers Construction Co. (1)
Ottinger, E. C. (1)
Ottinger, T. C. (1)
Otto, Carl L. (1)
Otto, Olaf (1)
Ottumwa Bridge Co. of Ottumwa, Iowa (4)
Ottumwa Supply & Construction Co. of Ottumwa, Iowa (3)
Overland Bridge Co. (1)
Overland Construction Co. of Chicago, Illinois (1)
Overman, D.H. (5)
Owego Bridge Co. of Owego, New York (34)
Owen H. O'Neill (1)
Owen, Abraham (1)
Owens, Gerald B. (1)
Ozark Engineering Co. of Joplin, Missouri (1)

P. G. Cowan, John Lynch of Darlington, and H. Severenson (1)
P. I. Cox Construction Co. (1)
P. McManus Co. (1)
P. Mervyn Stephenson (7)
P. V. Pennybacker (1)
P. Wiest (1)
P.A.C. Spero & Co. (1)
P.J. Nickel Co. (1)
P.L. Crooks & Co. (1)
P.S. Easterday & Co. of Walla Walla, Washington (1)
PCL Construction Enterprises of Edmonton, Alberta, Canada (7)
PDM Bridge of Eau Claire, Wisconsin (2)
PSM Construction USA, Inc. of Brisbane, California (1)
Pacific Bridge Co. of Portland, Oregon (25)
Pacific Bridge Co. of Oakland, California (3)
Pacific Bridge Co. of San Francisco, California (1)
Pacific Car & Foundry Co. of Seattle, Washington (2)
Pacific Construction Co. of San Francisco, California (6)
Pacific Construction Co. of Spokane, Washington (1)
Pacific Iron & Steel Co. (1)
Pacific Iron Works of Portland, Oregon (3)
Pacific Railway & Navigation Co. (1)
Pacific States Construction Co. (1)
Pacific-Murphy Corporation (1)
Packard, Franklin L. (1)
Packard, Lambert (1)
Paddleford, Phillip (3)
Page & Schnable of Chicago, Illinois (4)
Page, Charles (1)
Page, Rufus (1)
Page, Todd (1)
Paige, Carey & Co. (1)
Paine & Gallucci Inc. of Tacoma, Washington (1)
Paine, Arthur B. (1)
Pakar Construction Co. (1)
Palatka Bridge Co. of Palatka, Florida (1)
Palmateer, W.A. (1)
Palmer & Baker, Inc. (3)
Palmer & Hornbostel of New York, New York (1)
Palmer & Reed (1)
Palmer Steel Co. of Springfield, Massachusetts/Holyoke, Massachusetts (8)
Palmer, Timothy (3)
Palmetto Bridge Constructors of Charleston, South Carolina (1)
Pan American Bridge Co. (1)
Pan American Bridge Co. of Moberly, Missouri (1)
Pan American Bridge Co. of New Castle, Indiana (43)
Pandora Cement Block Co. (1)
Panhorst, Frederick W. (5)
Paniagua, Roque (1)
Pardue, Will (1)
Parham Construction Co. of East St Louis, Illinois (1)
Paris Bridge Co. (5)
Park Boulevard Co. (1)
Parker & Banfield of Portland, Oregon (5)
Parker, Charles H. (6)
Parker, George A. (2)
Parker, H.G. (1)
Parker, Henry G. (1)
Parker-Schram Co. (1)
Parlier, Oscar (3)
Parsons Brinckerhoff of New York City, New York (5)
Parsons Transportation Group of Pasadena, California (2)
Parsons, Austin F. (3)
Parsons, Brinckerhoff, Quade & Douglas of New York City, New York (5)
Parsons, Brinkerhoff, Hall & Macdonald of New York City, New York (3)
Parsons, J. L. of Fort Dodge, Iowa (1)
Parsons, Klapp, Brinckerhoff & Douglas of New York City, New York (2)
Partridge, J.R. of Augusta, Maine (1)
Partridge, Reuben of Wilmington, New York/Marysville, Ohio (9)
Pasadena Water Division (1)
Pasco Construction Co. (1)
Passaic Rolling Mill Co. of Paterson, New Jersey (9)
Passaic Steel Co. of Patterson, New Jersey (3)
Patapsco Bridge & Iron Works (1)
Patch & Swords (1)
Patterson Steel Co. of Tulsa, Oklahoma (3)
Patterson and Brown of Baltimore - Awarded 6-Aug-1884, $7.75 per yd. (1)
Patterson, Earl (1)
Patterson, J.A. (1)
Patterson, Robert (1)
Patterson-Burghardt Construction Co. of Denver, Colorado (2)
Patterson-Burkhardt Construction Co. of Denver (1)
Pattillo & Associates of Glenwood Springs, Colorado (1)
Paul Bacco Construction Co. (1)
Paul F. Barnard of Ames, Iowa (1)
Paul Jarvis Inc. (2)
Paul Philippe Cret (4)
Paul Smith Construction Co. (1)
Paul Wills (1)
Paul, Frederick T. (1)
Paules, J.O. (1)
Pavlo Engineering Co. of New York City, New York (1)
Paxson, Glenn S. of Salem, Oregon (59)
Paxton-Vierling Steel Co./Works of Omaha, Nebraska (7)
Payne, Frank of Danville, Illinois (2)
Payson, William (3)
Peacock Construction Co. (1)
Pearson & Son, Ltd of London, England, United Kingdom (1)
Peart Bros. (1)
Peckham Construction Co. Inc. of Buffalo, New York (1)
Pederson, Hans (1)
Pee, Joe (1)
Pegram, George of Council Bluffs, Iowa (24)
Peirce, James M. (1)
Peirce, James M. (2)
Pelgate, Alfred M. (1)
Pencoyd Bridge & Construction Co. of Pencoyd, Pennsylvania (14)
Pencoyd Iron Works of Pencoyd, Pennsylvania (32)
Pendleton, Craig R. (1)
Penker Construction (1)
Penn Bridge & Machine Works of Beaver Falls, Pennsylvania (1)
Penn Bridge Co. of Beaver Falls, Pennsylvania (70)
Penn Bridge Works of Beaver Falls, Pennsylvania (7)
PennDOT Bridge Division (10)
Pennington, WC (1)
Pennsylvania Bridge Co. of Beaver Falls, Pennsylvania (5)
Pennsylvania Canal Co. (1)
Pennsylvania Department of Highways (1)
Pennsylvania Main Line Canal (1)
Pennsylvania Steel Co. of Steelton, Pennsylvania (152)
Pennsylvania Turnpike Commission (7)
Pennsylvania state highway department (2)
Pensacola Ship Building Co. of Pensacola, FL (1)
Pensacola Shipbuilding Co. (1)
Penzel, Linus (2)
Peppard & Fulton (1)
Peppard, O.E. of Missoula, Montana (18)
Perkins Bridge & Supply Co. (2)
Perkins Brothers of Horseheads, New York (1)
Perlatti, Luigi (1)
Perry McGlone Construction Co. of Kansas City, Missouri (4)
Perry, Arthur I. (1)
Pertell, Mr. of Milwaukee, Wisconsin (1)
Petardi, Joseph (1)
Peter Brill (1)
Peter Kiewit & Sons of Omaha, Nebraska (15)
Peter Paddleford (1)
Peter Sluszka (1)
Peters, Amos J. of Longview, Washington (1)
Peterson & Earnhart (2)
Peterson Builders Inc. (1)
Peterson Contractors Inc. of Reinbeck, Iowa (2)
Peterson, Charles E. (1)
Peterson, Vernon (1)
Petry-Moulton Co. of Cheyenne, Wyoming (1)
Pharaoh & Co. of Henryetta, Oklahoma (1)
Phee Construction Co. of Chicago, Illinois (1)
Phelps, George W. (2)
Philadelphia Bridge Works of Philadelphia, Pennsylvania (2)
Phillips Contracting Co. (2)
Phillips,, F. C. (3)
Phoenix Bridge Co. of Phoenixville, Pennsylvania (185)
Phoenix Iron Co. of Philadelphia, Pennsylvania (29)
Phoenix Iron Works of Phoenixville, Pennsylvania (15)
Phoenix Steel Co. (1)
Phoenix Steel Inc. of Eu Claire, Wisconsin (1)
Phoenix-Tempe Stone Co. (2)
Phoenix? (5)
Phoenixville Bridge Co. (1)
Phoenixville Iron Works of Philadelphia, Pennsylvania (2)
Piano, Renzo (1)
Pierce Gruber & Beam (1)
Pierce, O.N. (3)
Pihlfeldt, Thomas G. (4)
Pinney, J.C. (1)
Pioneer Bridge Co. of Kansas City, Missouri (4)
Pioneer Bridge Co. of Mitchell, South Dakota (1)
Pioneer Construction Co. of Malvern, Arkansas (25)
Pipeline, National (1)
Piper & Shiffler Bridge Co. (1)
Pithie (1)
Pittsburg Bridge Co. (3)
Pittsburg Steel Casting Co. (1)
Pittsburgh Bridge Co. of Pittsburgh, Pennsylvania (35)
Pittsburgh Construction Co. of Pittsburgh, Pennsylvania (6)
Pittsburgh Locomotive Works of Pittsburgh, Pennsylvania (1)
Pittsburgh Steel Construction Co. (1)
Pittsburgh-Des Moines Steel Co. of Des Moines, Iowa & Pittsburgh, Pennsylvania (33)
Pittsfield Construction Co. of Englewood, Florida (4)
Placer County (1)
Plagens, Albert G. (1)
Plank Road Co. (1)
Plante, Antoine (1)
Platzer, Harmon of Kemah, Texas (1)
Pleasant-Hasler Contracting Co. (2)
Plymale, D.P. (1)
Pocahontas Coal Co. (1)
Pohl, Joseph L. (1)
Poinsett, Joel (1)
Polisson, Paul A. (1)
Pomarino & Pearthree (1)
Pomeroy, J.H. of San Francisco, California (4)
Poole, McGonigle, and Dick of Portland, Oregon (3)
Pope Construction Co. (2)
Pope, Willard S. of Detroit, Michigan (1)
Porman, M.D. of York, Pennsylvania (2)
Port Arthur-Fort William Rotary Club of Port Arthur, Ontario, Canada & Fort William, Ontario, Canada (1)
Port of New Orleans (1)
Porter Brothers Co. of Spokane, Washington (4)
Porter McCully Constr. Co. (1)
Porter, Andrew J. (1)
Porter-Dewitt Construction Co. (1)
Portier, Guido A. (1)
Portland Bridge & Building Co. (1)
Portland Bridge Co. of Portland, Oregon (5)
Portland Dredging Co. of Portland, Oregon (1)
Possibly D.H Morrison / Columbia Bridge Works. (1)
Possibly Morrison (1)
Post & McCord Works of New York City, New York (1)
Post, Simeon S. (1)
Post, W. S. (1)
Potashnick, R.B. (1)
Potisuk, T. (1)
Pottstown Shops, Reading Railroad (2)
Powell Brothers (1)
Powell Brothers Inc (1)
Powell, Ainsworth L. of Postville, Iowa (1)
Powell, Harry R. of Grenfell, Saskatchewan, Canada & Seattle Washingon (3)
Power, Utah (1)
Powers Thompson Construction Co. (1)
Powers, James F. (1)
Praeger, Capt. Emil H. (1)
Prahl, Emil (1)
Prater, Ben D. of Harrisonville, Missouri (1)
Pratt Construction Co. (1)
Pratt and Shepherd Co. (1)
Pratt, Jonathan (1)
Pratt, Tomas & Caleb Co. (1)
Pratt, W.H. (1)
Pratt, William A. (3)
Praytor, Howton & Wood (1)
Prescon Corporation of Corpus Christi, Texas (3)
Prescott & Callannan of Albany, New York (1)
Preston, George B. (2)
Preston, William G. (1)
Price Brothers (1)
Price Brothers Co. of Lansing, Michigan (1)
Prickett, Mose A. (1)
Priester Construction Co. of Davenport, Iowa (1)
Prior, J. H. (18)
Prison Laborers (2)
Prisoners Of War (1)
Probably Groton Bridge Co. Per M Quiet (1)
Probst, George (1)
Proctor, A. G. (1)
Proctor, Phimister A. (2)
Proksch, A.H. (1)
Provo Foundary & Machine Co. (1)
Prow, J.C. (1)
Pryor & Jeffrey (1)
Public Roads Administration (1)
Public Works Administration (36)
Public Works Construction Co. (5)
Pueblo Bridge Co. of Pueblo, Colorado (25)
Puerto Rico Iron Works of Playa de Ponce, Puerto Rico (2)
Puget Construction Co. (3)
Puget Sound Bridge & Dredging Co. of Seattle, Washington (10)
Puget Sound Bridge & Dry Dock (1)
Pullman Standard Car Manufacturing Co. of Chicago, Illinois (1)
Puls, Otto (1)
Purcell & Clark (1)
Purcell, Charles H. (21)
Purdy Construction Co. (1)
Purvis & Bertram Construction Co. of Fort Worth, Texas (3)

Quackenbush, John E. of Webster City, Iowa (2)
Quail, F. E. (1)
Quandel of Harrisburg, Pennsylvania (1)
Queen City Bridge Co. (1)
Quimby, Henry H. of Philadelphia, Pennsylvania (3)
Quincy Engineering, Inc. of Sacramento, California (1)
Quinn & Powell Construction (1)
Quinn Construction Co. of Salisbury, Missouri (1)
Quist, A. W. (1)

R-Delta Engineers Inc. of Garland, Texas (1)
R. A. Leavitt of Melrose, Massachusetts (1)
R. C. Stevens Co. (1)
R. McCalman Construction (1)
R. P. Farnsworth & Co. of New Orleans, Louisiana (2)
R. R. Tway, Inc. of Oklahoma City, Oklahoma (5)
R. Toohey & Sons of Phoenix, Arizona (1)
R. Van Hearden (1)
R.B. Potashnick Construction, Inc. of Cape Girardeau, Missouri (2)
R.C. Churchill Co. Inc. (2)
R.C. Mahon Co. of Detroit, Michigan (2)
R.C. Mattingly & W. Heafey (1)
R.C. Ritz Construction Co. (1)
R.C. Storrie & Co. of San Francisco, California (1)
R.D. Weaton Bridge Co. of Chicago (1)
R.D. Wheaton & Co. of Chicago, Illinois (4)
R.F. Hawkins Iron Works of Springfield, Massachusetts (20)
R.G. Watkins & Son of Amesbury, Massachusetts (1)
R.G. Zachrich Construction (2)
R.H. Harper Construction Co. (1)
R.H.H. Blackwell Co. of Kingsport, Tennessee (2)
R.J. Vickery (1)
R.L. Gaster Construction Co. of Little Rock, Arkansas (1)
R.L. McCoy, Inc. (1)
R.R. Dawson Bridge Co. (1)
R.R. Kitchen Co. of Wheeling, West Virginia (1)
R.S. McKay & Son (1)
R.W. & B.H. Pinney Bros (1)
RDG Dahlquist Art Studio of Des Moines, Iowa (1)
Rae, Walter S. of Pittsburgh, Pennsylvania (2)
Raeber, C. (8)
Raff & Dexter (2)
Railroad Co. Bridge Gang/Railroad Co. Forces (5)
Raimundo Camprub� (2)
Rall, Theodor of Chicago, Illinois (9)
Ralston, J.C. (3)
Rambo, N.R. (1)
Rambo, Nathan R. (2)
Ramsey & Co. (1)
Ramsour, Andrew L. of Hickory, North Carolina (1)
Ranaldo, Rich (1)
Rand, O.H. (1)
Randall Stout Architects of Los Angeles, California (1)
Randolph, Isham (5)
Ransome, Ernest L. of England (2)
Rapid Span Structures Ltd. of Armstrong, Britisch Columbia, Canada (1)
Rapp, F. A. (1)
Rasmussen, Madison (1)
Ratcliff, J.G. of Waukon, Iowa (1)
Rath, W.I. (1)
Rathbun, Elias (1)
Raush, F.M. (1)
Ravi Engineering of Rochester, New York (1)
Ray & Son of Louisiana, Missouri (1)
Ray, George (1)
Raymond & Campbell of Council Bluffs, Iowa (4)
Raymond International of Ontario, California. (5)
Raymond Pile & Concrete Co. (1)
Raynor, C.W. of Portland, Oregon (1)
Rayor, Gary (1)
Ra�l Gaya Benejam (1)
Reading Steel Products Inc. (1)
Reading, Robert (1)
Reagan, J. B. (1)
Reagan, Y.P. (1)
Reamsnyder, Sam (1)
Rebcon, Inc. of Dallas, Texas (1)
Recchi America Inc. of Miami, Florida (1)
Redline, Joseph (1)
Reed & Reed of Woolwich, Maine (1)
Reed, Charles E. (1)
Reed, Oliver S. (1)
Reed, Wendall M. (1)
Reese & Davis of Hermiston, Oregon (1)
Reeve, Ward & Keepers of Clinton, Iowa (2)
Reeves Construction Co. (1)
Regenhardt Construction Co. (1)
Reidy, Maurice A. (1)
Reilly & Riddle Co. of Philadelphia, Pennsylvania (1)
Reilly, Thomas (1)
Reimard, C. H. of Bloomsburg, Pennsylvania (1)
Reinking Co. of Des Moines, Iowa (1)
Reiter, Curtis & Hill of Philadelphia, Pennsylvania (2)
Remington Bridge Works of Ilion, New York (1)
Renaud Bros. Inc. (9)
Rennie, John of Phantassie, East Lothian, Scotland, United Kingdom (1)
Renno, David (1)
Reno Construction Co (1)
Republic Concrete Construction Co. (2)
Reuben Ely Jr. of Monticello, Iowa (1)
Reuben Ely Sr. of Monticello, Iowa (1)
Reuben Fields, Contractor (1)
Reuss, George (1)
Reyes Engineering of Portland, Oregon (1)
Reynolds & Sutton (2)
Reynolds Aluminum of Milwaukee, Wisconsin (1)
Reynolds Ely Construction Co. of Springville, Utah (1)
Reynolds Metals Co. of Richmond, Virginia (1)
Reynolds, C.H. (1)
Rezner Stone Co. (1)
Rezner, William (12)
Rhutasel and Associates, Inc. of Freeburg, Illinois/Centralia, Illinois/Evergreen, Colorado (2)
Rice & Weidman (1)
Rice, F.E. (1)
Rice, L.V. (1)
Richard Dale (1)
Richard F. Hawkins of Hawkins and Burrall, Springfield (1)
Richard Heysick Sr. (2)
Richard, Alfred of Ogdensburg, New York (1)
Richardson, George S. (2)
Richardson, Gordon, & Associates of Pittsburgh, Pennsylvania (2)
Riche, C.S (2)
Richland Construction Co. (1)
Richmond Bridge Co. (1)
Richmond Bridge Corp. (1)
Richmond Construction Co. of Advance, Missouri (1)
Richmond Pike Co. (1)
Richmond, Van R. (1)
Ricketts, Ellsworth G. (1)
Rickman, Federick (1)
Ridout, Charles (1)
Riebe, Herman (1)
Rieth-Riley Construction Co. (1)
Riffe, George (1)
Riffe, John (1)
Rigdon Bros. (2)
Riggs-Sherman Co. (1)
Righter Co. of Columbus, Ohio (1)
Rights, William H. (2)
Riley, S.J. of Columbus, Mississippi (1)
Riley-Bailey Construction Co. of St. Louis, Missouri (2)
Riser, R.S. (1)
Ritter-Conley Manufacturing Co. of Pittsburgh, Pennsylvania (3)
Riverside Bridge Co. of Wheeling, West Virginia (3)
Riverside Bridge Co. of Martins Ferry, Ohio (3)
Roach & Edwards -piers (1)
Roads, Northwest (1)
Roake, Theodore C. (5)
Roanoke Bridge Co. of Roanoke, Virginia (7)
Roanoke Iron & Bridge Works of Roanoke, Virginia (24)
Roanoke Iron and Bridge Works (1)
Roark, J.M. (2)
Robbins, O.B. of Heber Springs, Arkansas (1)
Robe Dekard (1)
Robert Dunn & Co. (1)
Robert Finley Laing (3)
Robert Grace Contracting Co. of Pittsburgh, Pennsylvania (1)
Robert H. Evans & Co. (1)
Robert H. H. Hugman (3)
Robert Lee Ringer (2)
Robert R. Prann of San Juan (2)
Robert Robbins (1)
Robert W. Austin Co. (2)
Robert and Andrew Baird (1)
Roberts Supply Co. of Lima, Ohio (2)
Robertson, Carmean & Bennett of Caruthersville, Missouri (2)
Robertson, Lake of Brownwood, Texas (1)
Robertson, Larry (1)
Robertson, Winfred T. (1)
Robie Construction Co. of Manchester, New Hampshire (1)
Robinson & Steinman of New York, New York (10)
Robinson & Young (1)
Robinson and Steinman-Engineer/Design (1)
Robinson, A.F. of Chicago, Illinois (1)
Robinson, Albert A. of South Reading, Vermont (1)
Robinson, Holton D. of Massena, New York (9)
Robinson, Lewis (2)
Rocca & Caletti of San Francisco, California. (9)
Rocca & Calleti (1)
Rocca, John (3)
Rochester Bridge & Construction Co. of Rochester, New York (2)
Rochester Bridge & Iron Works of Rochester, New York (6)
Rochester Bridge Co. of Rochester, Indiana (57)
Rock River Bridge & Dam Co. (2)
Rockbottom Bridge Co. (1)
Rockefeller, David of New York, New York (1)
Rockport Granite Co. (1)
Rockwell, Anderson and Co. (1)
Rockwell, George W. (3)
Rode, Hans H. (1)
Rodenhouser & Smith (1)
Rodgers & Hagerty, Inc. of New York City, New York (3)
Rodgers Brothers Co. (1)
Rodriguez, Dionicio of Toluca de Lerdo, Mexico (1)
Roebling Bridge Co. (1)
Roebling, Emily W. (1)
Roebling, John A. (5)
Roebling, Washington A. (3)
Roebuck, David (1)
Roehl & Steel of Knoxville, Tennessee (5)
Roehl and Gervin (1)
Roemheld & Gallery Co. of Chicago, Illinois (3)
Roemheld, Jules E. (1)
Rogers Iron Co. of Springfield, Ohio (1)
Rogers, John S. (1)
Rogers, Sadler (2)
Rohrbaugh, M. (1)
Rollins, J.G. (1)
Roney, Nels (1)
Root, Henry (1)
Rosales + Partners of Boston, Massachusetts. (10)
Rosales, Miguel of Guatemala (3)
Rosewater, Andrew of Bukovan, Bohemia (1)
Rosiek Construction Co. (1)
Rosiek Construction Co. Inc. of Arlington, Texas (1)
Rosmann and Goeller (2)
Ross Brothers (1)
Ross Construction of Austin, Texas (1)
Ross Construction Co. of Los Angles, California (1)
Ross, John A. (1)
Ross, Joseph (1)
Ross, L.J. of Caldwell, Idaho (1)
Rousch, Stanley L. (1)
Rouse Construction Co. of Cape Girardeau, Missouri (2)
Roy L Williams (3)
Roy L. Bair & Co (1)
Roy Ryan & Sons Co., Inc. of Evanston, Indiana (1)
Roy T. Earley Construction Co. of Tacoma, Washington (1)
Ruckman-Hansen, Inc. of Fort Wayne, Indiana (1)
Runyan, Eugene (1)
Runyon Bridge Co. (2)
Ruprecht Voirol Construction Co. of St Louis Missouri (1)
Rusling, G. M. (1)
Russ Mitchell, Inc. of Houston, Texas (5)
Russell Bridge Co. (1)
Russell Keys (1)
Russell Simmons (1)
Russell Standard Corporation (1)
Russell, John (1)
Russell, Josiah (1)
Russell, Robert (3)
Russell, Thomas B. (1)
Russo, Joseph (1)
Rust & Coolidge of Chicago, Illinois (5)
Rust, Henry B. of Virginia (1)
Rust, Thomas Edsall of Saginaw, Michigan (13)
Rutherford & Brown of New York City, New York (1)
Ryan & Keon of Boston, Massachusetts (1)
Ryan, James T. of Muscatine, Iowa (1)
Ryan-Parker Construction Co. of New York City, New York (1)
Rye & Henkel Construction Companies, Associated of Mason City, Iowa (1)
Ryerson Co. of Chicago, Illinois (4)

S&R Construction (1)
S&R Corporation of Lowell, Massachusetts (1)
S&S Bridge Painting of Kerrville, Texas (1)
S. & H. Howard & Co. (1)
S. B. Twining Co. (1)
S. Bopdy Br. (1)
S. J. Cohen & Co. of Blytheville, AR (1)
S. M. Siesel Co. of Milwaukee, Wisconsin (1)
S. W. Chiles (1)
S.A. Lindstrom Co. of Woodbury, New Jersey (1)
S.B. Gardner (1)
S.C. Sachs Co. (1)
S.G. Hunter Iron Works of Atlantic, Iowa (1)
S.J. Cohen & Co. of Blytheville, Arkansas (1)
S.J. Cohen Construction Co. of Blytheville, Arkansas (3)
S.J. Groves & Sons Co. of Minneapolis, Minnesota (1)
S.K. Jones Construction Company (2)
S.M. Boomer (1)
S.P. White & Co. (1)
S.S. Mullen Inc. (2)
S.W. Cohen Co. of Blytheville, Arkansas (1)
SAILS Charter School of Sparta, Wisconsin (1)
SRF Consulting Co. of Minneapolis, Minnesota (2)
STACY (1)
Saarinen, Eero of Kirkkonummi, Finland (3)
Saarinen, Eliel of Rantasalmi, Finland (1)
Safdie Rabines Architects of San Diego, California (1)
Saginaw Bridge Co. (2)
Sahale (1)
Sahale LLC of Lake Forest Park, Washington (13)
Saint Charles Bridge Co. (1)
Salem, Winona and Southern Railway (1)
Salle Construction Co. (1)
Salmond Emmons III (1)
Sammons, Robertson & Henry (1)
Sampley, D. C. (1)
Sams, Hal. J. (2)
Samual Hamm & Sons (1)
Samuel & Levi Hege (1)
Samuel & Neef (1)
Samuel Dickinson (1)
Samuel Kneass (1)
Samuel Kraus Co. (1)
Samuel M. Green Co. of Springfield, Massachusetts (1)
Samuel Ramsey & Co. (1)
Samuel Sewall, Jr. (1)
San Francisco & North Pacific Railroad Tiburon Yard of Tiburon, California (1)
San Francisco Bridge Co. of San Francisco, California (5)
Sanborn, Joshua (1)
Sand Springs Home (1)
Sanders Construction Co. (1)
Sanders Contracting Co. (2)
Sands, E.F. (1)
Sandy Kay Builders (1)
Sanford & Brooks (2)
Sanford Construction Co. (1)
Sanitary District of Chicago (4)
Santina & Thompson of Roseville, California (1)
Sarnia Bridge Co. of Sarnia, Ontario, Canada (3)
Satartia Bridge Co. (1)
Saulpaw, G.W. (1)
Savanna Construction Co. of Savanna, Illinois (1)
Savannah-Altamaha Bridge Co. (1)
Sawtell, Henry (1)
Sawyer (1)
Sawyer, F.M. (1)
Sawyer, George (1)
Sawyer, J.K. (1)
Saylor, F. H. (1)
Scaife Foundry & Machine Co. (1)
Scales, George F. of Waterloo, Iowa (2)
Schaaf, William (1)
Schaffer Construction Co. (1)
Schall, F.E. (1)
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Vaughn & Melton of Middlesboro, Kentucky (1)
Vaughn Construction Co. (1)
Vaux, Calvert of London, England, United Kingdom (18)
Veater & Davis (1)
Vermillion Brothers Contractors (1)
Vermont Agency Of Transportation (1)
Vermont Construction Co. of St. Albans, Vermont (11)
Vermont Department of Transportation (1)
Vermont Marble Co. (1)
Vernard, Anderson. (1)
Vierling Steel Works of Chicago, Illinois (15)
Viking Construction Co. Inc. of Rancho Cordova, California (1)
Vinall, Alfred of Davenport, Iowa (2)
Vincennes Bridge Co. of Vincennes, Indiana (114)
Vincennes Co. (1)
Vincennes Steel Corp. of Vincennes, Indiana (4)
Vincent, C.A. (1)
Vinson & Pringle of Phoenix, AZ (1)
Vinson Construdon Co. of Phoenix, Arizona (1)
Vint, Thomas C. (1)
Vipond & Walker of Kansas City, Missouri (1)
Virginia Bridge & Iron Co. (alternate name for Virginia Bridge Co.)
Virginia Bridge & Iron Works (alternate name for Virginia Bridge Co.)
Virginia Bridge Co. of Roanoke, Virginia (51)
Virginia Department of Highways (4)
Virginia Turnpike Co. (1)
Virginia and Maryland Bridge Co. (1)
Vogt & Contant SW Corp. of Little Rock, Arkansas (2)
Vogt, Josef of Guttenberg, Iowa (1)
Volkert, Inc. of Mobile, Alabama (1)
Volunteers (2)
Von Emperger, Frederick of Beroun, Central Bohemia, Czech Republic. (2)
Vose, George L. (1)
Vulcan Road Machine Co. of Charles Town, West Virginia (1)

W A Leach (1)
W&L Engineering (1)
W. A. Bechtel Co. of San Francisco, California (2)
W. C. Babcock Grain Co. (1)
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W. Denney Pate (1)
W. H. Hinman Inc. of North Anson, Maine (4)
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W. Hasell Wilson (1)
W. Horace Williams Co. of New Orleans, LA (1)
W. M. Fife & Son (4)
W. M. Pickett & Co. (1)
W. Marshall & Sons (2)
W. P. Aldrich & Co. (1)
W. P. Wampler, President of the Bridge Co.. (1)
W. R. Aldrich & Co. (1)
W. S. Miller (1)
W. T. Hiscox and Co. of New York, New York (1)
W. W. Clyde & Co. of Springville, Utah (3)
W. W. Griffin of Atlanta, Georgia (1)
W. W. Heath (1)
W.A Overhiser (1)
W.A. Ross Construction Co. of Kansas City, Missouri (6)
W.B.Roscoe Co. (1)
W.C. Hopkins (2)
W.C. Howton Co. of Birmingham, Alabama (1)
W.C. Johnson Belleville, IL (1)
W.C. McNeely Construction Co. (1)
W.D. Johnson (1)
W.D. Steinbach Sons of Lewistown, Pennsylvania (1)
W.E. Angier (2)
W.E. Callahan Construction Co. (1)
W.E. Turner & Co (1)
W.E.Pickens (1)
W.F. Merritt of Galveston, Texas (1)
W.G. Carnes (1)
W.G. Watt Construction Co. (1)
W.H. & G.H. Turner (1)
W.H. & L.E. Truesdell of Belvidere, Illinois (1)
W.H. Crawford & Son (1)
W.H. Grammer & Son (1)
W.H. Groome & Son (3)
W.H. Hoyt (1)
W.H. Knapp Co. (1)
W.H. Moore (1)
W.H. Rimmey (1)
W.H. Witt Co. of Seattle, Washington (3)
W.H. Wynn & Son (1)
W.H.Moore & Bros. of Georgia (1)
W.J. Burns Co. of Syracuse, New York (2)
W.J. Hobson (1)
W.J. Meagher & Sons of Bay City, Michigan (2)
W.J. Menefee Construction Co. (3)
W.J. Throop (1)
W.J. Watson & Co. of Indianapolis, Indiana (2)
W.L. Hailey Inc. (1)
W.L. Stebbings (1)
W.M (1)
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W.Merrill, Hiram (1)
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W.P. McGeorge & Co (1)
W.P. Townsend Construction Co. (1)
W.R. Rehorn (1)
W.R. Smith. Jr. (1)
W.S. Barstow & Co. of New York City, New York (1)
W.S. Kinnear (1)
W.T. Butler Co. (1)
W.T. Washer (1)
W.W. Boxley & Co. of Roanoke, Virginia (3)
W.W. White Steel Construction Co. (1)
WALKER & CHASE/J D MCGEE (1)
WM Barclay (2)
WPA (3)
Wabash Bridge & Iron Works of Wabash, Indiana (6)
Wabash Bridge Co. of Wabash, Indiana (1)
Wabash-St. Charles Bridge Co. (2)
Wabasha-Nelson Bridge Co. (1)
Waddell & Hardesty (4)
Waddell & Harrington of Kansas City, Missouri (45)
Waddell & Hedrick of Kansas City, Missouri (9)
Waddell & Son of Kansas City, Missouri (3)
Waddell, J.A.L. of Port Hope, Canada (20)
Wadell & Son (1)
Wagal, George A. (1)
Wagle, E. H. (1)
Wagman Construction, Inc. of York, Pennsylvania (1)
Wagman, E. M. (1)
Wagman, G. A. of York, Pennsylvania (1)
Wagner Murray Architects, P.A. of Charlotte, North Carolina (1)
Wakefield & Jacobson (1)
Wakefield, Robert of Portland, Oregon (6)
Walbridge and Aldinger Co. (1)
Waldo, Mark (2)
Walker Brothers of Charleston, West Virginia (2)
Walker, Abernethy, Dudley, & Co. (1)
Walker, F.B. (1)
Walker, Joseph H. (1)
Wall, Zimri (2)
Wallace Bridge & Structural Steel Co. of Seattle, Washington (5)
Wallace Equipment Co. (1)
Wallace Marshall & Co. (1)
Wallace Roberts & Todd, LLC of Philadelphia, Pennsylvania (1)
Wallace, G. H. (1)
Wallace, John (1)
Wallace-Coates Engineering Co. (1)
Walling, Haralson, & Adams of Houston, Texas (1)
Walsh & Thomas (1)
Walsh Construction Co. (2)
Walsh Construction Co. of Chicago, Illinois (2)
Walsh Construction Co. of Davenport, Iowa (10)
Walsh's Holyoke Steam Boiler Works of Holyoke, Massachusetts (1)
Walsh, J.M. (1)
Walsh, James (1)
Walsh-Burney & Moore (1)
Walter E. Emery (1)
Walter L Woodward, engineer (1)
Walter Sharp Bridge Co. (9)
Walter Toebe Co. (2)
Walters & Son (5)
Walters Brothers (6)
Walton, H.B. (1)
Wamego Sand Co. of Wamego, Kansas (1)
Wander & Mason (1)
War Assets Administration (1)
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Ward & Tully, Inc. of Browns Station, New York (3)
Ward & Ward, Inc. (2)
Ward & Weighton of Sioux City, Iowa (2)
Ward Brothers (1)
Ward Engineering Co (1)
Ward P. Webber (1)
Ward, John of Clinton, Iowa (1)
Ware Co. of El Paso, Texas (1)
Warner & Mad--- (1)
Warner, John of Rock Island, Illinois (1)
Warren & Wetmore-designers (1)
Warren Brothers Co. of Boston, Massachusetts (1)
Warren Spruce Co. (1)
Washburn, Henry (1)
Washer, William T. (19)
Washington Bridge Co. (2)
Washington Department of Highways (1)
Washington Portland Cement Co. (1)
Washington State Department of Transportation (1)
Washington Water Power Co. (1)
Washington Water Power Co., The (1)
Waterloo Construction Co. of Waterloo, Iowa (3)
Watkins & Hardaway of Birmingham, Alabama (1)
Watkins, V. (1)
Watson (1)
Watson Manufacturing Co. of Paterson, New Jersey (4)
Watson, A. J. (1)
Watson, John of Cambridgeshire, East Anglia, England, United Kingdom (1)
Wauna Toll Bridge Co. (1)
Wausau Iron Works of Wausau, Wisconsin (14)
Wayland Bridge Co. (2)
Wayne Brothers, Inc. of Davidson, North Carolina (1)
Weand, O.W. (1)
Weatherford Machine & Foundry Co. (1)
Weaver, Caspar (2)
Weaver, George (2)
Weaver, John (7)
Weaver, Jonathan (1)
Weaver, Pearly (1)
Weaver, Walter (1)
Weber, Peter (1)
Webster, George S. of Philadelphia, Pennsylvania (5)
Weden, D.B. (1)
Weekly Brothers Inc. of Idleyld Park, Oregon (1)
Weeks & Day of San Francisco, California (1)
Weikel, Oscar (1)
Weikel, Ray (1)
Welch, Berne of Peru, Indiana (1)
Welch, J. (1)
Welden Brothers Construction Co. of Iowa Falls, Iowa (9)
Welding Engineers, Inc. (1)
Welding, Stinger of Coolidge, Arizona (1)
Weller, G.H. (1)
Wellman, McDowell of Cleveland, Ohio. (1)
Wells, Edward (1)
Wells, John H. (5)
Wells, Malcolm (1)
Wendal Bollman (1)
Wendell Phillips Brown of Cleveland, Ohio (2)
Wendler Engineering (1)
Wendling, Otto of Muscatine, Iowa (5)
Wentworth, Charles C. of Newport News, Virginia (1)
Wentzel, L.M. (2)
Werderitsch, Jace of Iowa City, Iowa (1)
Werling Steel Works (1)
Wernwag, Louis of Reutlingen, Baden-W�rttemberg, Germany (6)
Wesley Cameron architect. (1)
West & Jamison (1)
West Coast Construction Co. (2)
West Coast Steel Works of Portland, Oregon (7)
West Counties Construction Co. of Elmhurst, llinois (1)
West Fork Bridge Co. (1)
West Virginia Bridge Works (1)
West Virginia State Road Commission (2)
West, Ambrose R. (1)
West, Carl (1)
Westcott Engineering Co. of Chicago, Illinois (3)
Western Bridge & Construction Co. of Omaha, Nebraska (19)
Western Bridge Co. of Harrisonville, Missouri (19)
Western Bridge Co. of Chicago (1)
Western Bridge Works of Fort Wayne, Indiana (8)
Western Construction of Spokane, Washington (1)
Western Construction Co. (1)
Western Constructors Inc. (1)
Western Engineering Constructors Inc. of Loomis, California (1)
Western Pacific Erectors (1)
Western Railroad Corporation (1)
Western Wood Structures of Tualatin, Oregon (9)
Westfir Lumber Co. (1)
Westinghouse Electric Corporation of Pittsburgh, Pennsylvania (2)
Westmoreland, Ed (1)
Wetherell, Frank of Des Moines, Iowa (1)
Weymouth Construction Co. (1)
Weymouth, Moses (1)
Wheaton Bridge & Iron Co. of Muskegon, Michigan (1)
Wheeler Inc. LLC of Minneapolis, Minnesota (2)
Wheeler, Edgar T. of San Francisco, California (1)
Wheeling Structural Steel Co. (1)
Wheelock & Co. (1)
Wheelock Bridge Co. (3)
Wheelock Construction Co. (1)
Wheelock and King Co. of Des Moines, Iowa (1)
Wheelock, Luther A. (1)
Wheelock, McKay & Goshorn (2)
Wheelwright Construction Co. (1)
Wheelwright, Haven & Hoyt of Boston, Massachusetts (1)
Whipple, Squire of Albany, New York (34)
Whistler, George Washington of Fort Wayne, Indiana (6)
Whitbeck & Power (1)
White River Bridge Co. (1)
White, E.A. (1)
White, James (1)
White, Nicholas (1)
White, Samuel P. of Beaver Falls, Pennsylvania (1)
White, U.B. (1)
Whitehead, F.W. of Kahoka, Missouri (2)
Whitham Construction Co. (2)
Whiting & Turner Contracting Co. of Baltimore, Maryland (2)
Whitney Brothers Co. (1)
Whitney, Charles S. of Milwaukee, Wisconsin (5)
Whitney, Wilke, & Stewart of Rushville, Indiana (1)
Whitson & Kirby of Ardmore, Oklahoma (2)
Whittaker & Diehl of Harrisburg, Pennsylvania (12)
Whittaker & Diehl, Harrisburg, Pa. (1)
Whittemore, D.J. (1)
Whittle, George D. (3)
Wichita Construction Co. (2)
Wickersham, John H. (1)
Wickes Engineering & Construction Co. of Des Moines, Iowa (4)
Wickham Bridge & Pipe Co. of Council Bluffs, Iowa (1)
Wickline, G.G. (1)
Wicks Engineering & Construction Co. (1)
Wieser Concrete Products, Inc. of Maiden Rock, Wisconsin (1)
Wiggel, C. R. (1)
Wiggin, Ernest W. of New Haven, Connecticut (1)
Wightman, George F. (1)
Wikstrom, Inc., A. S of Skaneateles, New York (1)
Wilbur J. Watson & Co. of Cleveland, Ohio (11)
Wilbur Watson (1)
Wilcox & Sayward (1)
Wilcus, S.R. (1)
Wilder Construction Co. of Bellingham, Washington (1)
Wildish Paving, Eugene (1)
Wildish Standard Paving Co. of Eugene, Oregon (4)
Wiley Manufacturing Co. of Port Deposit, Maryland (1)
Wiley N. Jackson Co. of Roanoke, Virginia (1)
Wiley-Maxon Construction Co. of Dayton, Ohio (1)
Wilkerson, Ed (1)
Willaeur & Co. (1)
Willamette Iron Bridge Co. of Portland, Oregon (2)
Willard Construction Co. (1)
William A. Dean (1)
William Albert Truesdell of New York, New York (1)
William Alexander Campbell Jones (1)
William Barclay Parsons (3)
William Fairbarin & Co. of Manchester, England, United Kingdom (1)
William Fish Williams (1)
William G. Grove (4)
William G. Woolfolk & Co. of Chicago, Illinois (1)
William H. C. Greer (1)
William H. Durand (1)
William H. Smith of Martinville (1)
William Hamilton Newell (1)
William Harley Moore (1)
William Harmon & Sons (1)
William Hasell Wilson (1)
William Hildebrand (1)
William Horace Williams Co. of New Orleans, Louisiana (2)
William Horrabin Construction Co. of Iowa City, Iowa (4)
William J. Hill Construction Co. of Denver, Colorado (1)
William J. Howard Co. of Chicago, Illinois (1)
William J. Storen Co. of Detroit, Michigan (6)
William J. Wilgus (1)
William John McDannald (1)
William Ledbetter Co. of Los Angeles, California (3)
William Madison Thomas (1)
William Marshall & Son (2)
William O'neal and Sons Construction (1)
William Oliver Bridge Co. of Spokane, Washington (2)
William P. Carmichael Co. of Williamsport, Indiana (4)
William P. Cowles (1)
William P. Roscoe Co. of Billings, Montana (7)
William Peyton Day of San Francisco, California (1)
William Pickels Riddle (1)
William S. Hewett & Co. of Minneapolis, Minnesota (16)
William Sooysmith & Son of Chicago, Illinois (3)
William T. Young Bridge Co. of Nashville, Tennessee (14)
William W. Wright (1)
William Wagner & Bros (1)
William Welles Bosworth of Marietta, Ohio (3)
William Wernweg & Walter Blake (1)
William Willim (1)
Williams & Douglas (1)
Williams Bridge Co. of Richmond, Virginia (1)
Williams Brothers (1)
Williams Brothers Construction Co. Inc. of Houston, Texas (2)
Williams, Charles A. of Jacobus, Pennsylvania (17)
Williamson & Williams of Batesville, AR (1)
Williamson & Williamson Bridge Construction (1)
Williamson, H. (2)
Willis Environmental Engineering, LLC of Marble Falls, Texas (1)
Willis, Noel W. (2)
Willits & Burr Co. of San Francisco, California (2)
Wilson Construction Co. (1)
Wilson, Charles (1)
Wilson, D.W. (1)
Wilson, H.E. (1)
Wilson, J.W. of Warrensburg, Missouri (2)
Wilson, John (1)
Wilson, John T. (1)
Wilson, Robert of Hagerstown, Maryland (1)
Wilson, T.A. (1)
Wilson, William A. (1)
Winamac Bridge Co. (3)
Windaor, Coleman & King (1)
Windsor Locks & Warehouse Point Bridge & Ferry Co. (1)
Wing, C.B. (1)
Wing, H.W. (1)
Winkley, L.W. (1)
Winn, Charles of Muscatine, Iowa (1)
Winston & Co. (1)
Winston Brothers of Minneapolis, Minnesota (9)
Winterburn and Lumsden (2)
Winterset Inc. (2)
Winvilliers, C. S. (1)
Wirtz & Yates Inc. (1)
Wisconsin Bridge & Iron Co. of Milwaukee, Wisconsin (143)
Wisconsin Bridge & Iron Works of Milwaukee, Wisconsin (10)
Wisconsin Bridge & Steel Co. (1)
Wisconsin Bridge Co. of Milwaukee, Wisconsin (8)
Wisconsin State Highway Commission (5)
Wisda, M.X. (1)
Wise & Watson Co. of Passaic (1)
Wise, D.J. (1)
Wise, Joseph (1)
Wishon, Albert G. (1)
Wisner, Otis (1)
Witham Construction Co. (1)
Withers, Charles D. (1)
Witmer, O.D. (1)
Wm R Schnabel (1)
Wm Wagman and Bro of Dallastown, Pennsylvania (1)
Wolf, Aaron (1)
Wolf, Henry (8)
Wolfe, D.C. (1)
Wolff, Louis P. (1)
Womack Construction Co. of Sherman, TX (1)
Wood and Witten (1)
Wood, E.M. (1)
Wood, Ferdinand (2)
Wood, H.S. (1)
Wood, Rosencran (1)
Woods Brothers Construction Co. of Lincoln, Nebraska (2)
Woods, Dutton (2)
Woods, Robert P. of Indianapolis, Indiana (11)
Woodward Construction Co. of Woodward, Oklahoma (1)
Woodward-Clyde of Delaware (1)
Worchester, Joseph R. of Boston, Massachusetts (10)
Word & Worrell of Fort Worth, Texas (1)
Word, Dean (2)
Worden-Allen Co. of Milwaukee, Wisconsin (25)
Work, J.C. (1)
Workin' Bridges/NSRGA of Grinnell, Iowa (2)
Works Progress Administration (254)
Worthen, M.E. (1)
Wosky, John B. (2)
Wright Construction (5)
Wright Contracting Co. (2)
Wright Lyons and Co. (1)
Wright, Aaron (1)
Wright, E.C. (1)
Wright, James E. (1)
Wright, R.B. (1)
Wrought Iron Bridge Co. of Canton, Ohio (359)
Wrought Iron Bridge Co. of Canton, Ohio (1)
Wunderlich, Martin of Jefferson City, Missouri, and St. Paul, Minnesota (10)
Wustholz, Fred (1)
Wyeth, Nathan C. (1)
Wyman & Simpson of Augusta, Miane (2)
Wynkoop & McGormley of Lansing, Michigan (3)
Wynn, George W. of Iowa City, Iowa (1)
Wysor, W.W. (1)

Xu, Liantao (1)

Yancey Construction Co. of Abilene, Kansas (4)
Yant Construction Co. (1)
Yarbrough Construction Co. of Austin, Texas (1)
Yaskin Engineering Inc of Miami, Florida (3)
Yates, C. R. (1)
Yates, William (1)
Yawger & Betterfeld of Indianapolis, Indiana (2)
Yeager & Sons (1)
Yehle, Frank (4)
Yellville Construction of Yellville, Arkansas (1)
Yeon-Pelton lumber company (1)
Yohn & Ritter (1)
York Bridge Co. of York, Pennsylvania (25)
York Engineering & Construction Co. (1)
Yost Brothers (2)
Yost Construction Co. (1)
Youdall Construction Co. (1)
Young, Charles H. of Muscatine, Iowa (4)
Young, Charles O. (1)
Young, D.H. of Manchester, Iowa (5)
Young, Hugh E. of Chicago, Illinois (3)
Young, Robert A. (1)
Youngstown Bridge Co. of Youngstown, Ohio (24)

Zachrist Construction (1)
Zane, Noah (1)
Zartman Construction Co. of Northumberland, Pennsylvania (1)
Zaugg, Marion (1)
Zeigler, A. K. (1)
Zelmer & Forrest Tidwell (4)
Zenas King & Sons (1)
Zendala Construction Co. of Manitowoc, Wisconsin (2)
Zimmerly Bridge Co. (2)
Zimmerman, F.A. of Redding, California (1)
Zimmerman, O.B. (1)
Zimmerman, Roy (1)
Zmmerly Construction Co. of Paris, Illinois (1)
Zoli, Theodore (4)
Zook, Henry (1)
Zurmuhlen, Frederick (1)

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