Modjeski & Masters

of Mechanicsburg, Pennsylvania
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Blue Water Bridge (St. Clair County, Michigan)
Built 1938
Through truss bridge over St. Clair River on Westbound I-94 in Port Huron
Open to traffic

Blue Water Bridge (St. Clair County, Michigan)
Built 1997
Steel through arch bridge over St Clair River on I-94 EB
Open to traffic

Cairo Ohio River Bridge (Alexander County, Illinois)
Design, 1937
Cantilevered through truss over the Ohio River on US 51/60/62 between Cairo, Illinois and Wickliffe, Kentucky
Open to two-lane traffic

Clark Memorial Bridge (McCracken County, Kentucky)
Design, 1931
Three-span through truss bridge over Tennessee River on US 60 in Ledbetter
Demolished and replaced.

Gateway Bridge (Clinton County, Iowa)
Design, 1956
Suspension bridge over Mississippi River on US 30 at Clinton
Open to traffic

George C. Platt Bridge (Philadelphia County, Pennsylvania)
Built 1949
Cantilevered through truss bridge over Schuylkill River on PA 291 (Penrose Avenue) in Philadelphia
Open to traffic

George Rogers Clark Memorial Bridge (Jefferson County, Kentucky)
Design, 1929
Cantilevered through truss bridge over Ohio River on US 31 between Louisville and Jeffersonville
Open to traffic

Glover Cary Bridge (Daviess County, Kentucky)
Built 1940
Through truss bridge over Ohio River on IN 161 (formerly US 231) at downtown Owensboro
Open to two-lane traffic

Market Street Bridge (Dauphin County, Pennsylvania)
Designer, 1928
Sixteen-span concrete arch bridge over East Channel Susquehanna River on Market Street (PA 3012) in Harrisburg
Open to traffic

Memphis & Arkansas Bridge (Shelby County, Tennessee)
Engineer, 1949
Cantilevered through truss bridge over the Mississippi River on I-55 at Memphis
Open to four lanes of traffic

NS - Lower Shellpot Bridge (New Castle County, Delaware)
Rehabilitators, 1888
Pratt through truss bridge over Christina River on Norfolk Southern Railway
Open to traffic

NS - Portage Viaduct (4th) (Wyoming County, New York)
Built 2017
Steel arch bridge over Genesee River on Norfolk Southern Railway
Open to traffic

Old Galveston Causeway (Galveston County, Texas)
Built 1912
Modern lift bridge with concrete arch approach spans over Galveston Bay on BNSF Railway (and former highway)
Open to railroad traffic only

Pennsylvania Turnpike Allegheny River Bridge (Allegheny County, Pennsylvania)
Design, 1952
Lost deck truss bridge over Allegheny River on the Pennsylvania Turnpike (I-76) in Plum
Bridge has been demolished; replacement span open to traffic

Quincy Bayview Bridge (Adams County, Illinois)
Built 1986
Cable-stayed bridge over the Mississippi River on westbound US 24 at Quincy
Open to two lanes of westbound traffic

Simon Kenton Memorial Bridge (Mason County, Kentucky)
Design, 1931
Suspension bridge over Ohio River on Business US 62/68 in Maysville
Open to traffic

Smithland Bridge (Livingston County, Kentucky)
Design, 1931
Through truss bridge over Cumberland River on US 60 at Smithland
Open to traffic

South Market Street Bridge (New Castle County, Delaware)
Built 1927
Bascule bridge over Christina River on South Market Street in Wilmington
Open to traffic

Twin Bridges (Henderson County, Kentucky)
Design, 1932
Pair of cantilevered through truss bridges over the Ohio River on US 41. Rehabilitated 2008
Open to traffic

UP - Houma Lift Bridge (Terrebonne Parish, Louisiana)
Design, 1982
Lost Warren through truss bridge over Intracoastal Waterway on Union Pacific Railroad
Removed and relocated to Freeport, Texas, in late 2010

UP - Old Brazos River Lift Bridge (Brazoria County, Texas)
Built 2011
Through truss bridge over Old Brazos River on Union Pacific Railroad Company
Open to traffic

UP - Pecos River High Bridge (Val Verde County, Texas)
Built 1944
Massive cantilevered deck truss bridge over Pecos River on the Union Pacific Railroad
Open to traffic

UP - San Bernard River Bridge (New) (Brazoria County, Texas)
Design, 2018
Pony/through plate girder bridge over San Bernard River on Union Pacific
Open to traffic