Browse by Builder
(Companies, Contractors, Engineers, etc.)
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- A & P Roberts Co. of Pencoyd, Pennsylvania (12)
- A G Proctor (1)
- A Teichert & Sons Inc (1)
- A. A. Lewis (1)
- A. Bentley & Sons Co. of Jacksonville, Florida (1)
- A. Buchanan of Chambersburg, Pennsylvania (1)
- A. Calhoun (1)
- A. F. Parsons (1)
- A. Fisher (1)
- A. Guthrie & Co. of St. Paul, Minnesota (6)
- A. J. Watson (1)
- A. K. Nicolaysen (1)
- A. K. Zeigler (1)
- A. L. Dolby & Co. (2)
- A. L. Kiefer (1)
- A. Martini and Co. (1)
- A. Morton Thomas & Associates (1)
- A. Munster (1)
- A. Olson Construction Co. of Waterloo, Iowa (1)
- A. Phimister Proctor (2)
- A. Smolkant (1)
- A. W. Quist (1)
- A. W. Schimberg (3)
- A.A. Alsbury & Co. (1)
- A.A. Davis Construction Co. (1)
- A.A. McLean (1)
- A.B. Gindley (1)
- A.C. Boyle & Co. of McGregor, Iowa (3)
- A.C. Georig (1)
- A.C. Shand (1)
- A.C. Striker (4)
- A.D. Bottomfield (1)
- A.D. Briggs & Co. (1)
- A.D. Kern (2)
- A.D. Stoyer of Shillington,Pennsylvania (1)
- A.E. Guidane (1)
- A.E. Shorthill Co. (2)
- A.F. Lewis of Wellsville, Kansas (1)
- A.F. Robinson, (1)
- A.G. Needs (1)
- A.G. Ryan & Sons (1)
- A.H. Austin of Webster City, Iowa (5)
- A.H. Proksch (1)
- A.J. Cheff Construction Co. (1)
- A.J. Himes (1)
- A.J. Lockhart (1)
- A.J. Nading (1)
- A.J. Tullock of Leavenworth, Kansas (3)
- A.L. Greenberg Iron Co. (1)
- A.L. Powell (1)
- A.M. Blodgett of Kansas City, Missouri (18)
- A.M. Kennedy & Sons (8)
- A.M. Lupfer (1)
- A.P. Dise (3)
- A.P. Poirot (2)
- A.S. Hecker (1)
- A.S. Leonard (1)
- A.S. Seybert (1)
- A.T. Nelson of Duluth, Minnesota (1)
- A.V. Spah (1)
- A.W. Grosvenor (4)
- A.Y. Bayne & Co. of Minneapolis, Minnesota (4)
- APAC of Kansas City, Kansas (1)
- ARUP (1)
- Aaron Wolf (1)
- Abkj Inc. (1)
- Abraham Owen (1)
- Adam Oscar Martin of Doylestown, Pennsylvania (2)
- Adams Construction Co. (1)
- Addison Conner (1)
- Adolph Green Construction Co. (1)
- Aetna Bridge (1)
- Alabama Dry Dock & Shipbuilding Co. of Mobile, Alabama (1)
- Alabama Road Commission (1)
- Alamo Construction Co. (1)
- Albert Anderson (1)
- Albert Fink (5)
- Albert G. Plagens (1)
- Albert G. Wishon (1)
- Albert Lucius (1)
- Albert Lyons (1)
- Albinson Construction Co. (1)
- Alesghem & Sons Rope Co. (1)
- Alexander C. Shand (1)
- Alexander Campbell (1)
- Alexander and Higby (1)
- Alexander von Babo (2)
- Alexis French (1)
- Alfred B. Butler (2)
- Alfred Noble (2)
- Alfred Olsen (1)
- Alfred P. Boller (1)
- All-Steel Equipment Co. (1)
- Allan A. Myers, Inc. (1)
- Allen & Fulton of Topeka, Kansas (2)
- Allen, McEvoy & Co. (2)
- Allied Structural Steel Co. of Chicago, Illinois (3)
- Allston Dana (1)
- Alphonse Halter (1)
- Altman-Rogers Co. of Oklahoma City, Oklahoma (2)
- Alton-St. Louis Bridge Co (1)
- Alvah Hopson (1)
- Alvin John Stewart (1)
- Amasa Stone (1)
- Ambrose-Burdsall Co. (1)
- Ambursen Construction Co. (1)
- American Bridge Co. of New York (449)
- American Bridge Works of Chicago, Illinois (2)
- American Concrete Co. (1)
- American Construction Co. (1)
- American Steel & Wire Co. (1)
- Amis Construction Co. (2)
- Ammann & Whitney (2)
- Amos Melberg (1)
- Andersen Bjornstad Kane Jacobs (1)
- Andreas W. Munster (1)
- Andrew Canzanelli (1)
- Andrew J. Potter (1)
- Angeles Gravel and Supply Co. (2)
- Angus Ferguson (1)
- Anson Jenkins & Augustus Neidig (1)
- Appleton & Davis (1)
- Applied EarthWorks, Inc. (1)
- Arad Copeland (1)
- Archibald Stuart Baldwin (1)
- Armstrong & Sons (1)
- Art Gates, Contractor (1)
- Arthur B. Paine (1)
- Arthur De Wint Foote (2)
- Arthur Dyer (1)
- Arthur I. Perry (1)
- Arthur L. Kiefer (1)
- Arute Brothers (1)
- Arvid Grant (2)
- Arvid Grant and Associates (1)
- Asa Nourse (1)
- Ash, Howard, Needles, & Tammen of Kansas City, Missouri (8)
- Asher grant (1)
- Atkinson-Windle Co. of Chillicothe, Missouri (3)
- Atlantic Bridge Co. of Greensboro, North Carolina (10)
- Atlantic County of New Jersey (1)
- Atlantic, Gulf, and Pacific Company (1)
- Attica Bridge Co. of Attica, Indiana (30)
- Audley General Contractors of Bow, New Hampshire (1)
- August Borneman (4)
- Augustus Schwaab (2)
- Ault-Rich Construction Co. (3)
- Austin Bridge & Road (1)
- Austin Bridge Co. of Dallas, Texas (19)
- Austin Brothers Bridge Co. (9)
- Austin Brothers Contractors (1)
- Austin F. Parsons (2)
- B -- B A Scheeler (1)
- B. Carney (1)
- B. Koru (1)
- B.E. Sivyer (1)
- B.H. Hardaway (1)
- B.J. Garnett (3)
- B.M. Krohn (1)
- BA Sheeler (2)
- Baird Brothers (2)
- Baker & Koontz (2)
- Baltimore Bridge Co. (4)
- Banden, Butin & Bowman (1)
- Bangs, Anson, & Co. (1)
- Barber Construction Co. (3)
- Barham Brothers (1)
- Barlow & Mackey (1)
- Barnum and Counihan (1)
- Barron & Hole (1)
- Bart Moore, Inc. (3)
- Bartlett & Kling Co. of Cedar Rapids, Iowa (1)
- Barton J. Sweat of Cedar Rapids, Iowa (1)
- Basic Marine Inc. of Escanaba, Michigan (3)
- Bateman Contracting Co. (1)
- Bates & Rogers Construction Co. of Chicago, Illinois (2)
- Batson Brothers (1)
- Baxter L. Brown (1)
- Bay Shipbuilding Corp. (1)
- Bean & Co. (1)
- Bear Creek Co. (1)
- Bechtel (1)
- Beckel Iron Foundry and Machine Shop of Bethlehem, Pennsylvania (2)
- Beckwith Quackenbush (1)
- Bedford Foundry & Machine Co. (1)
- Bedwell Co. (1)
- Beebe Orchard Co. (1)
- Bell & Associates (1)
- Bell & Bell of Watertown, Tennessee (2)
- Bell-Bockel Co. of Altoona, Pennsylvania (1)
- Bellefontaine Bridge & Iron Co. of Bellefontaine, Ohio (24)
- Bellefontaine Bridge & Steel Co. (alternate name for Bellefontaine Bridge & Iron Co.)
- Belmont Iron Works (1)
- Belvidere Construction of Belvidere, Illinois (1)
- Bement-Witt Lumber Co. (1)
- Ben C. Gerwick Co. (1)
- Ben Cole & Son of Ames, Iowa (6)
- Ben D. Prater (1)
- Benjam F. Hastman (1)
- Benjamin Henry Latrobe, Jr. (1)
- Benjamin L. Crosby (4)
- Benjamin Trollinger (1)
- Benno Janssen (1)
- Benton Jones (6)
- Bergen & Bergen (1)
- Berlin Construction Co. (10)
- Berlin Iron Bridge Co. of East Berlin, Connecticut (54)
- Berne Welch (1)
- Berriman & Anderson (1)
- Bethlehem Pacific Coast Steel Co. (1)
- Bethlehem Steel Co. of Bethlehem, Pennsylvania (50)
- Big Wabash Bridge Co. of Carmi, Illinois (1)
- Billmeyer, Nogel & Co. of Lewisburg, Pennsylvania (1)
- Biltolast Products Inc. (1)
- Black & Veatch (1)
- Blackshire & Blackshare (2)
- Blair Boyle (1)
- Blodgett Construction Co. (1)
- Bloomfield Bridge and Culvert, Inc. (1)
- Boardman Co. (9)
- Boise Iron Works (1)
- Bontrager Construction Co. (1)
- Booker, Kiehl & Whipple (1)
- Booth & Flinn Co. (2)
- Booth & Pomeroy (3)
- Bordwell & Zimmerman (1)
- Boston Bridge Works (12)
- Bowerman & McCloy (1)
- Boynton & Warriner of Cedar Rapids, Iowa (1)
- Brackett Bridge Co. of Cincinnati, Ohio (18)
- Brasfield & Gorrie Construction Co. of Birmingham, Alabama (1)
- Brazos River Bridge Co. (1)
- Brennecke & Fay of St. Louis, Missouri (1)
- Breslin Construction Co. (1)
- Briscoe Construction Co. (1)
- Brookville Bridge Co. of Brookville, Ohio (25)
- Brown & Root Inc. (2)
- Brown Brothers & Sims (1)
- Bruce V. Christy (1)
- Buchanan Bridge Co. (1)
- Buckeye Bridge Co. (1)
- Buckeye Bridge Works (9)
- Buckeye Portland Cement Co. of Bellefontaine, Ohio (1)
- Buckland & Taylor (2)
- Buckner Bros. (1)
- Bud Burket (1)
- Bud Gentry (1)
- Bullen Bridge Co. (alternate name for Pueblo Bridge Co.)
- Burdine Construction Co (1)
- Bureau of Reclamation (2)
- Burger Iron Co. (1)
- Burgess & Niple of Columbus, Ohio (1)
- Burk Construction Co. (11)
- Burns & McDonnell Engineering Co. (1)
- Bushman Construction Co. (3)
- Butler-Ryan Co. of St. Paul, Minnesota (1)
- Byrne & Black (1)
- Byrne Brothers Dredging & Engineering Co. (1)
- Byron B. Carter (1)
- C -- C W Deterding Jr (3)
- C&F Teaming & Trucking (1)
- C. A. Bryan (1)
- C. A. Rasmussen Inc. (1)
- C. B. Davison (1)
- C. C. Myers, Inc (1)
- C. C. Sykes (1)
- C. Collins (1)
- C. E. Allen (1)
- C. E. Christian (1)
- C. E. Ferris (1)
- C. G. Landon (1)
- C. G. Willis & Sons (1)
- C. J. Nystedt (2)
- C. M. Heiss (1)
- C. M. Hershey (1)
- C. Q. Horton (1)
- C. R. Wiggel (1)
- C. R. Yates (1)
- C. Raeber (1)
- C. Shallor Smith of Kansas (1)
- C. Tappan (1)
- C. W. Bagley (1)
- C. W. Bishop (1)
- C. W. Corbaley (1)
- C.A. Bingham (1)
- C.A. Catching (2)
- C.A. Holvik (1)
- C.A. McClung (1)
- C.A. Vincent (1)
- C.B. Wing (1)
- C.D. Forsbeck (1)
- C.E. Davis (2)
- C.E. Eastman (1)
- C.E. Maxwell & Son (1)
- C.F. Bibb (1)
- C.F. Feldschau (1)
- C.F. Hunt Co. (1)
- C.F. Johnson & Son (1)
- C.F. Laws (1)
- C.F. Lytle Co. of Sioux City, Iowa (3)
- C.F. Metzger (1)
- C.G. Bridges (1)
- C.G. Kershaw Contracting Co. (2)
- C.G. Thompson (1)
- C.H. Atkinson Paving Co. (2)
- C.H. Gildersleeve (2)
- C.H. Kirsch (1)
- C.H. Norwood (1)
- C.J. McGreevy (1)
- C.J. Montag (1)
- C.L. Creelman (1)
- C.L. Messmore (1)
- C.L. Strobel Construction Co. (1)
- C.M. Corkum Co. (1)
- C.M. Driver (1)
- C.M. Neeld Construction Co. (1)
- C.M. Russell & Co. (1)
- C.P. Jones (1)
- C.P. O'Reilly & Co. (1)
- C.P. O'Reilly Construction Co. (2)
- C.R Kent (1)
- C.R. Hill (1)
- C.S Riche (1)
- C.S. d'Invilliers (1)
- C.T. Fogle (1)
- C.T. Fogle Construction Co. (1)
- C.V. Dewart (1)
- C.V. Kerch (1)
- C.V. Laughlin (1)
- C.W. Atkinson Paving Co. (1)
- C.W. Tracy (1)
- C.Y. Hamp (1)
- CH2M Hill of Corvallis, Oregon (2)
- CJ Mahan Construction (1)
- CMI-Promex, Inc. (1)
- Cage Brothers (1)
- Caldwell & Drake Iron Works (1)
- Call Construction Co. (1)
- Calvert Vaux (8)
- Cambria Iron Works (2)
- Cambria Steel Co. (12)
- Camden Iron Works (1)
- Cameron and Halby (1)
- Campbell Bros. (1)
- Canton Bridge Co. of Canton, Ohio (140)
- Capital City Construction Co. of Des Moines, Iowa (1)
- Capitol Construction Co. of Columbus, Ohio (7)
- Capt. Joseph Balsey (1)
- Capt. Richard Delafield (1)
- Capt. William Gibbs McNeill (1)
- Captain Elias McMellen (1)
- Captain Jonathan Carr (1)
- Caputo and Keeble (1)
- Carl Bjork (1)
- Carl Carter (1)
- Carl F. Gould (1)
- Carl F. Mau (1)
- Carl Leonardt (1)
- Carl West (1)
- Carnegie Steel Co. of Pittsburgh, Pennsylvania (26)
- Carnegie, Phipps and Co. (1)
- Carolina Concrete Co. (1)
- Carolina Steel & Iron Co. of Greensboro,North Carolina (3)
- Carrother & Huggins Contractors (1)
- Carrothers & Crouch (1)
- Carruthers & Crouch (1)
- Carter & Co. (2)
- Carter and Hughes (1)
- Cascade Bridge, LLC (1)
- Cascade Construction Co. (2)
- Case Crane & Engineering Co. (1)
- Caspar Weaver (1)
- Cass Gilbert of Zanesville, Ohio (2)
- Cassimer Cramer (1)
- Cast Iron Pile & Bridge Co. of Keosauqua, Iowa (1)
- Cecil C. Arnold (3)
- Central Bitulithic Co. (1)
- Central Bridge Co. (1)
- Central Concrete & Construction Co. of Canton, Ohio (2)
- Central Construction Co. (3)
- Central States Bridge & Structure Co. (2)
- Central States Bridge Co. of Indianapolis, Indiana (27)
- Cha. W. Deterding (1)
- Chambers & Dobson of New Hampton, Iowa (1)
- Chambersburg Bridge Co. (1)
- Champion Bridge Co. of Wilmington, Ohio (74)
- Champion Iron Co. (1)
- Chamption Bridge Co. (1)
- Chaney & Armstrong (4)
- Chaney Engineering Co. (1)
- Chappel Construction Co. (1)
- Charles A. Ellis (1)
- Charles A. Sims & Co. (1)
- Charles A. Williams (12)
- Charles A. de St. Maurice (1)
- Charles Ball (2)
- Charles Boll (1)
- Charles Carr (1)
- Charles Collins (1)
- Charles Cowin (1)
- Charles D. Calley (1)
- Charles D. Withers (1)
- Charles Davis (5)
- Charles E. Andrew (8)
- Charles E. Neville (1)
- Charles E. Reed (1)
- Charles Ellet (1)
- Charles Frederick Loweth (6)
- Charles G. Huber (2)
- Charles G. Huser of Seattle, Washington (1)
- Charles G. Sheely (3)
- Charles G. Sheely Contracting Co. (1)
- Charles H. Hull (1)
- Charles H. Kendall (1)
- Charles H. Mull (1)
- Charles H. Parker (2)
- Charles H. Purcell (21)
- Charles Hartman, Jr. (1)
- Charles Hopkins Cartlidge (1)
- Charles Horton (6)
- Charles Huffine (1)
- Charles J. Glasgow (1)
- Charles L. Strobel (3)
- Charles Leonard (1)
- Charles M. Smith (1)
- Charles Macdonald (1)
- Charles Nathaniel Beckel (2)
- Charles O. Hamar Jr. (5)
- Charles O. Holcombe (1)
- Charles O. Young (1)
- Charles Page (1)
- Charles Peter Weeks (1)
- Charles R. Olberg (1)
- Charles R. Wermuth & Sons, Inc. (1)
- Charles Ridout (1)
- Charles S. Davis (1)
- Charles S. Whitney of Milwaukee, Wisconsin (5)
- Charles Scheidl (2)
- Charles Shaler Smith of Pittsburgh, Pennsylvania (3)
- Charles Vaughan (1)
- Charles W. Stoughton (1)
- Charles Wilson (1)
- Charter Oak Construction Co. (1)
- Chas A. Forbes (1)
- Chas A. Williams, (1)
- Chas H. Hamann (1)
- Chas. K. Horton of Houston, Texas (1)
- Chas. M. Schoenfeld (1)
- Chas. W. Deterding (1)
- Cherf Brothers (1)
- Chernus Construction Co. (1)
- Chester W. Schlusser, Jr. (1)
- Chicago Bascule Bridge Co. (1)
- Chicago Bridge & Iron Co. of Chicago, Illinois (7)
- Chicago Bridge Co. of Chicago, Illinois (12)
- Chicago Bridge and Iron Works Co. (2)
- Chico Construction Co. (1)
- Chillicothe Iron Co. (1)
- Chris O'Neil (1)
- Christian Ankeny & Jacob Walter (1)
- Christian Menn (1)
- Christian T. Gutleben (5)
- Christie-Hutchinson and Burton Co. (1)
- Christy Corp. (1)
- Cianbro Corporation of Pittsfield, Maine (1)
- Cincinnati Bridge Co. (1)
- Cincinnati Southern Division (1)
- City of Cincinnati, Ohio (2)
- City of Denver (1)
- City of Detroit Department of Parks and Boulevards of Detroit, Michigan (1)
- City of Pasadena (1)
- City of West Allis (1)
- Civil Construction Co. (1)
- Civil Works Administration (3)
- Civilian Conservation Corps (49)
- Clackamas Construction Co. (4)
- Clarence Burrow (1)
- Clark & Henery (3)
- Clark County (1)
- Clark H. Eldridge (6)
- Clark McDaniel (1)
- Clarke, Reeves & Co. of Philadelphia, Pennsylvania (4)
- Claude Allen Porter Turner of Lincoln, Rhode Island (6)
- Claude L. James (1)
- Cleary-Kuert Construction (1)
- Clement E. Chase (1)
- Cleveland Bridge & Iron Co. of Cleveland, Ohio (6)
- Cleveland Bridge Co. of Cleveland, Ohio (1)
- Clifford A. Dunn (1)
- Clifford Holland (1)
- Clifford Older, Engineer (1)
- Clifton & Applegate (1)
- Clinton Bridge & Iron Works of Clinton, Iowa (30)
- Clinton Bridge Co. (alternate name for Clinton Bridge & Iron Works)
- Clinton Bridge Works of Clinton, Iowa (6)
- Clinton Smith Bridge Co. (1)
- Clyde MacCornack (1)
- Coast Bridge Co. of Portland, Oregon (11)
- Col. Campbell of Dallas (1)
- Col. Frederick Mears (1)
- Collier Bridge Co. (1)
- Collins Haynes (1)
- Colonial Building Co. (4)
- Colonial Construction Co. (1)
- Colorado Bridge and Construction Co. (1)
- Colorado Fuel and Iron Corp. (1)
- Columbia Bridge Co. of Walla Walla, Washington (4)
- Columbia Bridge Works of Dayton, Ohio (25)
- Columbia Contracting Co. (1)
- Columbus Bridge Co. (4)
- Colusa Stone Co. (1)
- Commonwealth Engineering Co. (1)
- Concrete & Steel Construction Co. of Joplin, Missouri (7)
- Concrete Construction Co. (1)
- Concrete Steel Bridge Co. of Clarksburg, West Virginia (4)
- Concrete Steel Engineering Co. (2)
- Conde B. McCullough of Redfield, North Dakota (98)
- Condon, Cunningham & Lemmon (2)
- Continental Bridge (1)
- Continental Bridge Co. of Illinois (8)
- Continental Bridge Co. of Alexandria, Minnesota (1)
- Continental Bridge Co. of Philadelphia (1)
- Converse Bridge Co. of Chattanooga, Tennessee (10)
- Cook & Ransom of Ottawa, Kansas (2)
- Cook-O'Brien Construction Co. (1)
- Cooper's Construction Service Co. (1)
- Corbett Construction Co. (1)
- Corman Construction (1)
- Cornell & Co., Inc. (1)
- Corrigan, Lee & Halpin of Kansas City (1)
- Corrugated Metal Co. (alternate name for Berlin Iron Bridge Co.)
- Coshocton Iron Works (1)
- Cotton Bros. and Co. (1)
- Cotton States Bridge Co. (1)
- Cottongim Enterprises (1)
- County Forces (1)
- County of Yuba (1)
- Cowin Iron Works (3)
- Cramer & Associates, Inc. (1)
- Craven Smith (1)
- Crebo Construction Co. of Kansas City, Missouri (1)
- Creech Bros. (2)
- Croghan Construction Co. (2)
- Crossan Construction Co. (1)
- Cunningham & Johnson (1)
- Curn Mathis (1)
- Curwensville Construction Co. (1)
- Cushman Fairleigh Co. (1)
- Cutter and Malmgren (1)
- D -- D. C. Sampley (1)
- D. H. Morrison (1)
- D. M. McPhetres (1)
- D. R. Huntington (1)
- D. W. McKenzie (1)
- D.C. Maloney (1)
- D.C. Wolfe (1)
- D.E. McComb (1)
- D.F. Jones Construction Co. of Little Rock, Arkansas (5)
- D.F. Keith (1)
- D.H. Morrison (5)
- D.H. Young of Manchester, Iowa (4)
- D.J. Whittemore (1)
- D.J. Wise (1)
- D.M. Bassi (1)
- D.M. Brown (1)
- D.P. Le Fevre (1)
- D.P. Plymale (1)
- D.S. McClanahan & Son (1)
- D.W. Wilson, Supt. (1)
- DCF Engineering of Cary, North Carolina (1)
- DL&W RR Office of Engineering (1)
- DLZ Ohio, Designer (1)
- Dakota Concrete Co. (1)
- Dan Collom & Sons (1)
- Dan Collum & Co. (2)
- Dan McIntier (1)
- Daniel B. Luten (31)
- Daniel Clouse (1)
- Daniel Deering Construction Co. (1)
- Daniel E. Beasley, P.E. (1)
- Daniel E. Moran (1)
- Daniel Jeffery & Sons Inc. (1)
- Daniel Luten (1)
- Daniel O'Brien (1)
- Daniels & Webster (1)
- Darius Lapham (1)
- Dauphin County (1)
- David B. Steinman (13)
- David C. Moyano (1)
- David Evans & Associates (2)
- David Goodyear (4)
- David H. Morrison (1)
- David J.Thompson (1)
- David Renno (1)
- David Rockefeller (1)
- David Roebuck (1)
- David Shatzer (1)
- David Shriver, Jr. (1)
- David Snively Stoner (1)
- David Stoner (1)
- David Sutton (1)
- David, Bigelow, and Stratton (1)
- Davis Construction Co. (2)
- Dawson Bridge Co. (1)
- Day Laborers (1)
- DeLong Corporation (1)
- DeWaart and Son (1)
- Dean & Westbrook of New York, New York (14)
- Debolt Construction Co. (1)
- Decatur Bridge Co. of Decatur, Illinois (17)
- Decatur Iron & Steel Co. (1)
- Decker & Hague (1)
- Deering & Davidson (2)
- Delaware Bridge & Iron Co. (1)
- Delaware Bridge Co. (1)
- Delaware River Joint Toll Bridge Commission (1)
- Delaware River Port Authority (3)
- Delta Contracting Co. of Escabana, Michigan (1)
- Denithorne Bros. (1)
- Dennis Scivally (1)
- Denton and Johnson (1)
- Denver Bridge Co. (1)
- Denver Tramway Co. (1)
- Department of Highways (1)
- Derby Livesay (1)
- Des Moines Bridge & Iron Works of Des Moines, Iowa (2)
- Des Moines Steel Co. of Des Moines (6)
- Designed by Teng & Assoc (1)
- Desmond & Lord (1)
- Detroit Bridge & Iron Co. (2)
- Detroit Bridge & Iron Works of Detroit, Michigan (12)
- Detroit Bridge Co. of Detroit, Michigan (3)
- Detroit Bridge and Iron Co. (1)
- Detroit Steel & Bridge Co. (1)
- Dexter Smith (4)
- Dickey & Saxon (1)
- Dildine Bridge & Construction Co. (alternate name for Dildine Bridge Co.)
- Dildine Bridge & Iron Co. (alternate name for Dildine Bridge Co.)
- Dildine Bridge Co. (50)
- Dionicio Rodriguez (1)
- District of Columbia government (1)
- Dodd & Baldwin of Pennsylvania (1)
- Dolph Jones (1)
- Don Hall Constructors (1)
- Donald H. Evans (2)
- Douglas E. Johnson (1)
- Dover & Wood (1)
- Dover Boiler Works (4)
- Dr. B.F. Cory (1)
- Dr. Sena Kumarasena, Ph.D., P.E. (1)
- Drake & Stratton (1)
- Drake & Stratton Co. (2)
- Dravo Contracting Co. of Pittsburgh, Pennsylvania (6)
- Dravo Engineering Works (1)
- Drexel Construction Co. (1)
- Dubuque Boat & Boiler Works of Dubuque, Iowa (1)
- Dubuque and Wisconsin Bridge Co. (1)
- Dulin Construction (1)
- Duncanson - Harrelson Co. (1)
- Duncason-Harleson and Stolte Inc. (1)
- Dunleavey Bros Co. (1)
- Dunleith & Dubuque Bridge Co. (1)
- Dunn McCarthy Co. (1)
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