Browse by Builder
(Companies, Contractors, Engineers, etc.)
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- A -- 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. Guthrie & Co. of St. Paul, Minnesota (11)
- A. Ives (1)
- A. J. Hammond- designer (1)
- A. Martini & Co. (1)
- A. Morton Thomas & Associates of Rockville, Maryland (1)
- A. Olson Construction Co. of Waterloo, Iowa (22)
- A. Soda & Son (1)
- A.A. Davis Construction Co. (1)
- A.B. McFall- engineer (1)
- A.C. Boyle & Co. of McGregor, Iowa (3)
- A.C. Wood Construction Co. (1)
- A.D. Briggs & Co. of Springfield, Massachusetts (8)
- A.D. O'Brien of Wilmington, North Carolina (1)
- A.D.Briggs & Co.
- A.E. Ray (1)
- A.E. Shorthill Co. (2)
- A.G. Ryan & Sons (1)
- A.I. Savin Construction Co. of Hartford, Connecticut (1)
- A.J. Cheff Construction Co. (1)
- A.J. Yawger Co. of Indianapolis, Indiana (2)
- A.L. & C.J. Houser of Anniston, Alabama (1)
- A.L. Cook Construction Co. of Ottawa, Kansas (1)
- A.L. Greenberg Iron Co. (1)
- A.M. Cohron & Sons of Des Moines, Iowa (1)
- A.M. Felgate-engineer (1)
- A.M. Kennedy & Sons (27)
- A.P. Boller and Henry Hodge-designers (1)
- A.P. Poirot Construction Co. of Belleville, Illinois (3)
- A.R. Coffeen of Decorah, Iowa (1)
- A.S. Lyon, (1)
- A.S. Miller & Sons of Eugene, Oregon (1)
- A.S. Wikstrom, Inc. of Skaneateles, New York (1)
- A.V. Saph (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)
- ANJAC Enterprises Inc. of Brooklyn, New York City, New York (1)
- 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 Lincoln (1)
- Abraham Sheridan (1)
- Abraham Witmer (1)
- Abrams, W.A. (2)
- Achey, E.D. (1)
- Ackley, Joshua (1)
- Ackley, Samuel (1)
- Acrow Corporation of America of Parsippany, New Jersey (18)
- 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 A. of Minneapolis, Minnesota (9)
- Adams, W. A. (1)
- Adgate, F.W. of Chicago, Illinois (1)
- Adolph Green Construction Co. (1)
- Adolphus Bonzano (1)
- Advance Construction Co. of Waukesha, Wisconsin. (2)
- Aetna Bridge (1)
- Agnew Construction Co. (1)
- Agnew, Spiro T.
- 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)
- Alpheus Wheelock (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 (1,530)
- American Bridge Co. of New York (2)
- American Bridge Works of Chicago, Illinois (31)
- 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 (5)
- 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 Zürich, Switzerland (12)
- Amos Campbell (2)
- Amos Melberg Co. of Cedar Rapids, Iowa (9)
- 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 & Co. (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)
- Angier, W.E. (2)
- 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)
- Architectural Resources Group (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 Hayden- engineer (1)
- 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. of Charlotte, North Carolina & Roanoke, Virginia (12)
- Atlantic Bridge Co. of Greensboro, North Carolina (1)
- 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 (2)
- Ayres, Richardson of Hope, Arkansas (6)
- B -- B&O Mount Clare Shops of Baltimore, Maryland (21)
- B&O Railroad (1)
- B&P Bridge Co., The (1)
- B&W Concrete Co. of Newark, New Jersey (1)
- B. Griffin & Son (1)
- B. Perini & Sons, Inc. of Framingham, Massachusetts (1)
- B.D. Freedman (1)
- B.E. Curry Building Co. (1)
- B.J. McGrann & Co. of Lancaster, Pennsylvania (2)
- B.N. Davis of New Orleans, Louisiana (2)
- B.P. Panas & Co. of Houston, Texas (1)
- B.W. Candage & Sons of Seal Harbor, Maine (3)
- BACH Steel of Holt, Michigan (15)
- BNIM of Kansas City, Missouri (1)
- BTE Concrete Formwork of Glenwood Springs (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)
- Balfour Beatty (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)
- Barclay, W.M. (2)
- 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)
- Baskerville Co Eng's Birmingham, AL (1)
- 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)
- Beason Construction (3)
- 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. (4)
- 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 (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)
- Benítez-Rexach, Félix of Isla de Vieques, Puerto Rico (3)
- Berenz & Son Construction (1)
- Bergen & Bergen of Franklin, Indiana (2)
- Berger Partnership PS of Seattle, Washington (1)
- Berger/Abam Engineers, Inc. (1)
- Bergmann Associates (1)
- Berkeley Steel Co. (1)
- Berlin & Lovettsville Bridge Co. (1)
- Berlin Bridge Co. of New Berlin, Connecticut (-1)
- Berlin Construction Co. of Berlin, Connecticut (43)
- Berlin Iron Bridge Co. of East Berlin, Connecticut (179)
- 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 (5)
- Bethlehem Steel Co. of Bethlehem, Pennsylvania (135)
- Bette & Cring of Latham, New York (1)
- Bey Construction Co. of Minneapolis, Minnesota (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 (3)
- 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 Saarbrücken, 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 (3)
- 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)
- Boomer, S.M. (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 (5)
- 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 (103)
- Boston Bridge Works Inc. (1)
- 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 of Chicago, Illinois (2)
- 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 (28)
- Brackett Bridge Co. (likely fabricator).
- Braden, Richard J. (1)
- Bradley, W.E. (1)
- Bradley, William (1)
- Brady & Simpson (1)
- Brainerd, Silas (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)
- Brenneke & Fay (1)
- Brenneke & Fay - St.Louis - designer (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 & Metcalfe
- Brooks & Mixon of Decatur, Alabama (1)
- Brooks-Borg of Des Moines, Iowa (1)
- Brookville Bridge Co. of Brookville, Ohio (28)
- 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 & Mackenthum (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)
- Bucher, Thomas C. (1)
- Buchholz, C.W. (1)
- Buck, Leffert L. of Canton, New York (6)
- Buckeye Bridge Co. (1)
- Buckeye Bridge Works of Cleveland, Ohio (17)
- Buckeye Portland Cement Co. of Bellefontaine, Ohio (1)
- Buckingham, Cathernius (2)
- Buckland & Taylor Ltd. of North Vancouver, British Columbia, Canada (7)
- Buckley Realty Construction Co. of New York City, New York (1)
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- Pickens, W.E. (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 (36)
- Pittsburgh Construction Co. of Pittsburgh, Pennsylvania (7)
- Pittsburgh Locomotive Works of Pittsburgh, Pennsylvania (1)
- Pittsburgh Steel Construction Co. (1)
- Pittsburgh-Des Moines Steel Co. of Des Moines, Iowa & Pittsburgh, Pennsylvania (32)
- Pittsfield Construction Co. of Englewood, Florida (4)
- Placer County (1)
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- Plank Road Co. (1)
- Plante, Antoine (1)
- Platzer, Harmon of Kemah, Texas (1)
- Pleasant-Hasler Contracting Co. (2)
- Plymale, D.P. (1)
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- Pohl, Joseph L. (1)
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- Polisson, Paul A. (1)
- Pomarino & Pearthree (1)
- Pomeroy, J.H. of San Francisco, California (4)
- Poole, McGonigle, and Dick of Portland, Oregon (4)
- Pope Construction Co. of Jefferson City, Missouri (3)
- 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)
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- 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)
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- Potisuk, T. (1)
- Pottstown Shops, Reading Railroad (2)
- Powell Brothers of Fort Lauderdale, Florida (3)
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- Powell, Harry R. of Grenfell, Saskatchewan, Canada & Seattle Washingon (3)
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- Pratt Construction Co. (1)
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- Prior, J. H. (18)
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- Pueblo Bridge Co. of Pueblo, Colorado (25)
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- Puget Sound Bridge & Dredging Co. of Seattle, Washington (10)
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- Purcell, Charles H. (21)
- Purdy Construction Co. (1)
- Purvis & Bertram Construction Co. of Fort Worth, Texas (3)
- Q -- Quackenbush, John E. of Webster City, Iowa (2)
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- R.C. Storrie & Co. of San Francisco, California (1)
- R.D. Weaton Bridge Co. of Chicago (1)
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- R.H.H. Blackwell Co. of Kingsport, Tennessee (2)
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- R.R. Tway, Inc. of Oklahoma City, Oklahoma (5)
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- Rae, Walter S. of Pittsburgh, Pennsylvania (2)
- Raeber, C. (8)
- Raff & Dexter (2)
- Railroad Co. Bridge Gang/Railroad Co. Forces (8)
- Raimundo Camprubí (3)
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- 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)
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- Reuben Ely Jr. of Monticello, Iowa (1)
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- Rezner, William (14)
- Rhutasel and Associates, Inc. of Freeburg, Illinois/Centralia, Illinois/Evergreen, Colorado (2)
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- Richard Heysick Sr. (2)
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- Richardson, Gordon, & Associates of Pittsburgh, Pennsylvania (2)
- Riche, C.S (2)
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- Riffe, George (1)
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- Rights, William H. (2)
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- Riley-Bailey Construction Co. of St. Louis, Missouri (2)
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- 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 (1)
- Roads, Northwest (1)
- Roake, Theodore C. (5)
- Roanoke Bridge Co. of Roanoke, Virginia (8)
- Roanoke Iron & Bridge Works of Roanoke, Virginia (24)
- Roanoke Iron and Bridge Works (1)
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- Robbins, O.B. of Heber Springs, Arkansas (1)
- Robe Dekard (1)
- Robert Dunn & Co. (1)
- Robert Finley Laing (3)
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- Robert Lee Ringer (2)
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- Robert and Andrew Baird (1)
- Roberts Supply Co. of Lima, Ohio (2)
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- Robie Construction Co. of Manchester, New Hampshire (1)
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- Robinson, A.F. of Chicago, Illinois (1)
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- Robinson, Holton D. of Massena, New York (9)
- Robinson, Lewis (2)
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- Rocca & Calleti (1)
- Rocca, John (3)
- Rochester Bridge & Construction Co. of Rochester, New York (2)
- Rochester Bridge & Iron Works of Rochester, New York (7)
- Rochester Bridge Co. of Rochester, Indiana (59)
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- Roebling Bridge Co. (2)
- Roebling, Emily W. (1)
- Roebling, John A. (7)
- 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)
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- Rosiek Construction Co. (1)
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- Roy L. Bair & Co (1)
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- Ryerson Co. of Chicago, Illinois (4)
- S -- S&R Construction (1)
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- S. J. Cohen & Co. of Blytheville, AR
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- S.J. Groves & Sons Co. of Minneapolis, Minnesota (1)
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- S.W. Cohen Co. of Blytheville, Arkansas (1)
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- Schlaich Bergermann & Partner of Stuttgart, Baden-Württemberg, Germany (2)
- Schmidt Construction Co. of Winfield, Iowa (7)
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- Shaw, F. H.
- Shaw, F.H. (9)
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- Sherrill, J.D (1)
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- Shiffler Bridge Co. of Pittsburgh, Pennsylvania (2)
- Shimmick Construction
- Shimmick Construction Co. (2)
- Shinshichi Nakatani (1)
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- Shive-Hattery, Inc. of Cedar Rapids, Iowa (2)
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- Shoemaker Bridge Co. of Pottstown, PA (2)
- Shoemaker Bridge Co., Pottstown, PA.
- Shoemaker, Eyre of Philadelphia, Pennsylvania (2)
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- Shrake, John (3)
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- Simpson, Paul D. of Seal Harbor, Maine (4)
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- Sinclair, O. of Kankakee, Illinois (1)
- Singstad & Baillie of New York City, New York (1)
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- Singstad, Ole of Agdenes, Norway (5)
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