Between This Date Or Unknown
1650
1700
1750
1800
1810
1820
1830
1840
1850
1860
1870
1880
1890
1900
1910
1920
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1950
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1970
And This Date Or Unknown
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1910
1920
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1950
1960
1970
Any Builder
A. Guthrie and Company of St. Paul, Minnesota
A. H. Austin of Webster City, Iowa
A. Oscar Martin
A. Phelps and Sons
A. R. Morrison of Port Huron, Michigan
A. S. Decker of Flint, Michigan
A. Tenniswood of Yale, Michigan
A. W. Kutche and Company
Alamo Construction Company of San Antonio
Albert Fink
Aldrich and Cook and Jerome Wilhelm
Alex C. Bailey of Philipsburg, Pennsylvania
Allen, McEvoy and Company of Beloit, Wisconsin
Alpine Excavating Company
Altoona Construction Corporation
American Bridge Company of New York, New York
Anderson and Company of Chicago, Illinois
Andrew T. Barnes
Ardelt Industries of Canada
Augustus J. Dupuis Company
Austin Bridge Company of Dallas, Texas
B. C. Lord of Clayton, Michigan
B. H. Sargent
B. M. French
Bates and Rogers
Beckel Iron Foundry and Machine Shop of Bethlehem, Pennsylvania
Beighton and Spaulding of Pioneer, Ohio
Bellefontaine Bridge and Iron Company of Bellefontaine, Ohio
Berlin Construction Company of Berlin Connecticut
Berlin Iron Bridge Company of East Berlin, Connecticut
Bethlehem Steel Bridge Corporation of Steelton, Pennsylvania
Bethlehem Steel Company of Bethlehem, Pennsylvania
Bicchieri and Brothers
Bishop and Weir of Detroit, Michigan
Bontrager Construction Company
Booth and Flinn Company
Boston Bridge Works of Boston, Massachusetts
Brackett Construction Company of Cincinatti, Ohio
Brenaman Corporation
Bridge and Tank Company of Canada
Brighton and Wing
Brookville Bridge Company of Brookville, Ohio
Brown Brothers
Buckeye Bridge Works of Cleveland, Ohio
C. B. and M. R. Taylor
C. C. Schneider
C. E. Almond
C. L. Strobel
C. Mattaini
Cambria Iron Works of Johnstown, Pennsylvania
Campbell and Lattimore of Toronto, Ontario
Canadian Bridge Company of Walkerville, Ontario
Canonie Construction Company
Canton Bridge Company of Canton, Ohio
Carl Goodwin and Sons
Carrothers and Crouch of Kansas City, Kansas
Central Concrete and Construction Company of Canton, Ohio
Central Construction Company
Central States Bridge Company of Indianapolis, Indiana
Champion Bridge Company of Wilmington, Ohio
Champion Iron Company of Kenton, Ohio
Charles E. Walton of Pottsville, Pennsylvania
Charles Ellet
Charles M. Driver
Chermus Construction Company
Chicago Bascule Bridge Company
Chicago Bridge and Iron Works of Chicago, Illinois
Cleveland Bridge and Iron Company of Cleveland, Ohio
Clinton Bridge and Iron Works of Clinton, Iowa
Colonel John Choate
Columbia Bridge Works of Dayton, Ohio
Concrete Steel Bridge Company of Clarksburg, West Virginia
Continental Bridge Company of Chicago and Peotone, Illinois
Cook and Clark
Corrugated Metal Company of East Berlin, Connecticut (Berlin Iron Bridge Company of East Berlin, Connecticut)
Couse and Saunders
D. H. Overman
D. H. Young of Manchester, Iowa
D. T. Frank
Daniel Deering Construction Company of Norwalk, Connecticut
Daniel O'Connells Sons
Darin and Armstrong, Inc
David Shriver Jr.
Dean and Westbrook of New York, New York
Dean Construction Company
Decatur Bridge Company of Decatur, Illinois
Delta Contracting Company of Escanaba, Michigan
Denton and Johnson of Saginaw, Michigan
Detroit Bridge and Iron Works of Detroit, Michigan
Detroit Bridge and Iron Works of Detroit, Michigan and King Bridge Company of Cleveland, Ohio (Repairs)
Dixon, Appleby and Thorne
Dominion Bridge Company of Montréal, Québec
Dominion Construction Company
Dominion Steel and Coal Corporation
Dover Boiler Works of Dover, New Jersey
Drake and Stratton of Philadelphia, Pennsylvania and H. S. Kerbaugh of Philadelphia, Pennsylvania
Dravo Contracting Company of Pittsburgh, Pennsylvania
Dreibelbis and Company
Duncan Construction Company of Marlinton, West Virginia
Dyer Brothers
E. B. and B. F. Lippincott
E. C. Nolan and Son of Detroit, Michigan
E. H. Shuttleworth
E. M. Wichert Company
E. W. Baldwin of St. Louis, Michigan
Eastern Bridge and Structural Company of Worcester, Massachusetts
Edge Moor Bridge Works of Wilmington, Delaware
Edward E. Bray Construction Company of Bridgeport, Connecticut
Elkhart Bridge and Iron Company of Elkhart, Indiana
Empire Engineering
Eyre Construction Company of Philadelphia, Pennsylvania
F. Bicchieri and Brothers
F. C. Atletwed
F. H. Zeigler
F. M. Williams Construction Company of Winamac, Indiana
F. W. Whitehead
F. Yeager Bridge and Culvert Works of Port Huron, Michigan
Fargo Engineering Company of Kalamazoo, Michigan
Farris Bridge Company of Pittsburgh, Pennsylvania
Filbert, Porter, and Company
Fitch-Eva Company
Flickwir and Bush
Flinn-Moyer Company of Weatherford, Texas
Fogleman and Davidson
Fort Pitt Bridge Works of Pittsburgh, Pennsylvania
Freeland McHale and PA
Fry and Cain
Fry and Cain / Walter Toebe Company
G. A. and F.M. Wagman Company
G. M. Rusling of Hackettstown, New Jersey
George Dole
George W. Condon of Omaha, Nebraska
Getman Brothers
Gillette-Herzog Manufacturing Company of Minneapolis, Minnesota
Gilliland Construction Company
Good Roads Machinery Company of Marathon, New York
Gosner and Flynn of Dearborn, Michigan
Great Lakes Dredge and Dock Company
Groton Bridge Company of Groton, New York
Gustav Lindenthal
Guy Trimpey
H. E. Bunce
H. G. Christman Burke Company of Lansing, Michigan
H. H. Stoddard Company
H. L. Maddocks Company
H. Stewart
H. T. Osburn and Company
H. W. Sebastian and Company of St. Louis, Missouri (St. Louis Bridge and Iron Works)
Haller and Davis
Hamilton Bridge Company of Hamilton, Ontario
Hartman and Clark Brothers
Henry B. Rust
Henry Lovatt of Wolverhampton, England
Hertel and Vander Veen
Hill and Belknap
Hillding and Rabe
Hillding Construction Company
Holloway Construction Company
Holloway Construction Company and Argersinger - Morse Construction Company
Holloway Construction Company and E. C. Nolan and Son of Detroit, Michigan
Holloway Construction Company and Jarvick Construction Company
Holloway Construction Company and Raff and Dexter
Horace E. Horton of Minneapolis, Minnesota
Horseheads Bridge Company of Horseheads, New York
Illinois Bridge Company of Chicago, Illinois
Illinois Steel Bridge Company of Jacksonville, Illinois
Independent Bridge Company of Pittsburgh, Pennsylvania
Indiana Bridge Company of Muncie, Indiana
Indianapolis Bridge Company
Industrial Construction Company
Interstate Building Company
Iowa Bridge Company of Des Moines, Iowa
J. B. Jewell
J. B. Whitcomb Construction Company
J. E. Greiner and Company
J. E. Jayne and Son of Iowa City, Iowa
J. E. Mason
J. G. Ratcliff of Waukon, Iowa
J. H. Baker and Sons
J. H. Baker and Sons of Port Huron, Michigan
J. H. Cofrode and Company of Philadelphia, Pennsylvania
J. Lee Plumer
J. Morehouse
J. W. Scott of Flemington, New Jersey
Jack Lemon
James B. Diver Bridge Company of Keokuk, Iowa
James Clyde and James Elliot
James F. Powers
James House of Edgarton, Michigan
James M. Smith
James McGraw Company of Philadelphia, Pennsylvania
James William LeGore
Jarvick Construction Company
John A. Roebling Sons Company of New York, New York
John Decker of Rogers City, Michigan
John F. Casey Company
John H. Sparks of St. Joseph, Missouri
John L. Foreman
John R. Edelman Company
John W. Hertel
Joliet Bridge and Iron Company of Joliet, Illinois
Joseph A. Dice
Joseph Klein of Freeburg, Illinois
Joseph Leach Jr.
Jules E. Roentheld Company
K. G. Marks
Kansas City Bridge Company of Kansas City, Missouri
Kelly-Atkinson Construction Company of Chicago, Illinois
Ketler-Elliot Company of Chicago, Illinois
Ketler-Elliott Company of Chicago, Illinois
Keystone Bridge Company of Pittsburgh, Pennsylvania
King Bridge Company of Cleveland, Ohio
Koss Construction Company of Des Moines, Iowa
Kuert Contracting Company of Indianapolis, Indiana
L. A. Davidson of Saginaw, Michigan
L. A. Davidson of Saginaw, Michigan (Widening)
L. G. Garrison
L. Smith, H. A. and M. C. Nichols of Hastings, Michigan
L. W. Edison Company
L. W. Edison Company and Own-Ames-Kimball Company
L. W. Lamb Company of Jackson, Michigan
Lackawanna Bridge Company of Buffalo, New York
Lafayette Bridge Company of Lafayette, Indiana
Lambertville Iron Works of Lambertville, New Jersey
Leamon and Evans of Atlanta, Georgia
Leffert L. Buck
Lomas Forge and Bridge Works of Cincinnati, Ohio
Loselle Construction Company
Louis J. Bacco Construction Company of Stamford, Connecticut
Lovering-Longbotham Company
Lyons Construction Company
Lyons-Wagner
M. A. Gammino Construction Company of Providence, Rhode Island
M. B. C. (Unknown Initials)
M. Bennett and Sons
M. E. White Company
Macomb County Road Commission
Mariani Construction Company of New Haven, Connecticut
Marsh Engineering Company of Des Moines, Iowa
Marshall Campbell of Port Huron, Michigan
Massillon Bridge Company of Massillon, Ohio
Massillon Bridge Company of Massillon, Ohio, Smith - Wynkoop and McGormley Agents
Massman Construction Company of Kansas City, Missouri
McClintic-Marshall Company of Pittsburgh, Pennsylvania
McMyler-Interstate Company
Mead Brothers
Meredith Construction Company
Michelmann Steel Construction Company of Quincy, Illinois
Michigan Bridge and Pipe Company of Lansing, Michigan
Michigan Bridge Company of Portland, Michigan
Millard-Quigg Construction Company of Philadelphia, Pennsylvania
Milliken Brothers of Brooklyn, New York
Milwaukee Bridge and Iron Works of Milwaukee, Wisconsin
Minneapolis Bridge Company of Minneapolis, Minnesota
Minns Brothers
Mississippi Valley Structural Steel Company
Missouri Valley Bridge and Iron Company of Leavenworth, Kansas
Modern Construction Company of Fremont, Ohio
Mohawk and Hudson Iron Works of Waterford, New York (G.W. Eddy Foundry)
Morris Handler Company
Morse Bridge Company of Youngstown, Ohio
Mortimer W. Smith
Moseley Iron Bridge and Roof Company of Boston, Massachusetts
Moses Shepherd
Mount Vernon Bridge Company of Mount Vernon, Ohio
Mumaw and Briege
Murray Dougal and Company of Milton, Pennsylvania
N. M. Stark of Des Moines, Iowa
National Bridge Company of Boston, Massachusetts
National Concrete
Nelson and Buchanan of Chambersburg, Pennsylvania
New Castle Bridge Company of New Castle, Indiana
New Columbus Bridge Company of Columbus, Ohio
New England Structural Company of East Everett, Massachusetts
New Haven Construction Company of New Haven, Connecticut
New Jersey Bridge Company of Manasquan, New Jersy
Newman and Armstrong Engineers
Northwestern Bridge and Iron Company of Milwaukee, Wisconsin
Ohio Department of Highways, American Bridge Division
Ohio Steel Erection Company
Oregonia Bridge Company of Lebanon, Ohio
Ortale Construction Company
Othmar Ammann
Ottumwa Supply and Construction Company of Ottumwa, Iowa
Overland Construction Company
Owego Bridge Company of Owego, New York
P. E. Lane of Chicago, Illinois
P. I. Cox Construction Company
P. N. Massie of Bessemer, Michigan
Pan American Bridge Company of New Castle, Indiana
Passaic Rolling Mill Company of Paterson, New Jersey
Paul Bacco Construction Company of Stamford, Connecticut
Paul Construction Company
Paul Weinlander of Saline, Michigan
Pencoyd Iron Works of Pencoyd, Pennsylvania
Penn Bridge Company of Beaver Falls, Pennsylvania
Pennsylvania Steel Company of Steelton, Pennsylvania
Perkins Bridge and Supply Company
Peter Brill
Peter Mitchell Construction Company of Greenwich, Connecticut
Philadelphia Bridge Works of Philadelphia, Pennsylvania
Phoenix Bridge Company of Phoenixville, Pennsylvania
Pierson Contracting Company and Raff and Dexter
Pittsburgh - Des Moines Steel Company
Pittsburgh Bridge Company of Pittsburgh, Pennsylvania
Pittsburgh Bridge Company of Pittsburgh, Pennsylvania, Nelson and Buchanan of Chambersburg, Pennsylvania Agents
Possibly Dean and Westbrook of New York, New York
Price Brothers Company of Lansing, Michigan
Queen City Bridge Company of Cincinnati, Ohio
R. C. Mahon Company
R. D. Wheaton Bridge Company of Chicago, Illinois
R. R. Brenner and Son of Kalamazoo, Michigan
R.D. Wheaton Bridge Company of Chicago, Illinois
Raff and Dexter
Ralph Modjeski
Randolph MacDonald Company of Toronto, Ontario
Richard Adler
Richard F. Hawkins Ironworks of Springfield, Massachusetts
Rieth-Riley Construction Company of Goshen, Indiana
Riverside Bridge Company of Martins Ferry, Ohio
Roanoke Iron and Bridge Works of Roanoke, Virginia
Roberts Paving Company
Roberts Supply Company of Lima, Ohio
Rochester Bridge and Construction Company
Rodgers and Hagerty of New York, New York
Roemheld and Gallery
Ross and Williams of Beaverton, Michigan
Samuel P. White of Beaver Falls, Pennsylvania
Sarnia Bridge Company of Sarnia, Ontario
Schuylkill Bridge Company
Schuylkill Construction Company
Scribner and Heyworth
Sharpsville Steam Boiler Works of Sharpsville, Pennsylvania
Sheesley and Janney
Sherman Patent
Smith and Nichols
Smith Bridge Company of Toledo, Ohio
Smith, Latrobe, and Company of Baltimore, Maryland
Smith-Holmes-Burridge-Sparks of Houghton, Michigan
Squire Whipple Patent
Standard Engineering Company of Toledo, Ohio
Standard Steel Construction Company of Port Robinson, Ontario
Steinman, Boyton, Gronquist, and London
Strobel Steel Construction Company
Stupp Brothers Bridge and Iron Company of St. Louis, Missouri
T. J. Foley
Thomas E. Currie
Thomas Gilkey
Thomas McAdams
Toledo Bridge Company of Toledo, Ohio
Toledo-Massillon Bridge Company of Toledo, Ohio
Toledo-Massillon Bridge Company of Toledo, Ohio (W. Wylie)
Toledo-Massillon Bridge Company of Toledo, Ohio Wynkoop and McGormley, Agents
Tonawanda Engineering Corporation
Townsend-Shuttleworth-Ballmer Company of Lansing, Michigan
Trimpey and Whipkey
Trygve Hoff and Associates
Tunnel City Bridge and Iron Works of Port Huron, MI
U.S. Army Corp of Engineers
Union Bridge Company of Athens, Pennsylvania
United Construction Company of Albany, New York
Unknown
Variety Ironworks of Cleveland, Ohio
Various Builders
Vincennes Bridge Company of Vincennes, Indiana
Virginia Bridge and Iron Company of Roanoke, Virginia
W. B. Rogers
W. H. Harvie
W. H. Knapp Company of Monroe, Michigan
W. J. Anschutz
W. J. Anschutz of Saginaw, Michigan
W. J. Storen Company
W. L. Eva
W. Marshall and Son of Galesburg, Michigan
W. Marshall and Sons of Grand Rapids, Michigan
W.J. Storen Company
Waddell and Harrington
Walbridge and Aldinger Company
Walker Brothers of Charleston, West Virginia
Walsh Construction Company
Walter Toebe Company
Walter Willets
Watson Manufacturing Company of Paterson, New Jersey
Welden Brothers Construction Company of Iowa Falls, Iowa
Wendel Bollman of Baltimore, Maryland
West and Barden
Western Bridge Works of Fort Wayne, Indiana
Wetzel Engineering Company
Whitaker and Diehl
Whitehead and Kales Company of River Rouge, Michigan
Whitney Brothers
Willits Brothers Construction Company of Bay City, Michigan
Wisconsin Bridge and Iron Company of Milwaukee, Wisconsin
WM Cowin of Lambertville, Pennsylvania
Wolverine Engineering Company of Mason, Michigan
Worden-Allen Company of Milwaukee, Wisconsin
Wrought Iron Bridge Company of Canton, Ohio
Wynkoop and McGormley
York Bridge Company of York, Pennsylvania
Yost Brothers of Decatur, Indiana
Youngstown Bridge Company of Youngstown, Ohio
Any Engineer/Designer
A. P. Dise
Allegheny County
Allegheny County Department of Public Works
Charles Ellis and Joseph Strauss of Chicago, Illinois
Clarence W. Hudson
David Steinman
Dravo Contracting Company of Pittsburgh, Pennsylvania
Emil Swensson, of Mercantile Bridge Company
Ferris, Kaufman, and Company of Pittsburgh, Pennsylvania
Frederick Blackburn Pelham
G. A. Flink
G. Edwin Pidcock Company
George S. Webster
Illinois Division of Highways
Indiana State Highway Commission
J. A. L. Waddell
J. G. White Engineering Company
J. P. Kirkwood and J. W. Adams
Michigan State Highway Department
Modjeski and Masters
Newman and Armstrong
Pennsylvania Railroad
Pennsylvania State Highway Department
Phoenix Bridge Company of Phoenixville, Pennsylvania
Pittsburgh Department of Public Works
Richard B. Osborne
Sverdrup and Parcel
Waddell and Harrington
William H. Brown