Keystone Bridge Co.

of Pittsburgh, Pennsylvania

Brown Street Bridge (Crawford County, Pennsylvania)
Built 1899
Lost through truss bridge over Oil Creek on Brown Street
Replaced by new bridge

CSX White River Bridge (Marion County, Indiana)
Built 1886
Through truss bridge over White River in Indianapolis
Open to traffic

Fairground Street Bridge (Warren County, Mississippi)
Built 1895
Abandoned Pratt through truss over Illinois Central Railroad on Fairground St; one span was approach span Dubuque RR Bridge (1868 bridge) shortened by 1 panel (approx. 12 ft). 2nd span was also a RR bridge of unknown origin - shortened by 13.5 ft.
Abandoned

First Cincinnati Southern Railroad Bridge (Hamilton County, Ohio)
Built 1877
Lost through truss swing bridge over Ohio River on the Cincinnati Southern Railroad at Cincinnati
Superstructure replaced

Frisco Bridge (Shelby County, Tennessee)
Built 1892
Cantilevered through truss railroad bridge over the Mississippi River at Memphis
Open to railroad traffic

Keystone Bridge (Park County, Colorado)
Built ca. 1870
Wrought-iron through truss bridge over North Fork South Platte River at Bailey
Open to pedestrians only

Oak Ridge Railroad Overpass (Nelson County, Virginia)
Built 1882
Pratt through truss bridge over Norfolk Southern Railway on Wilson Road (Route 653)
Open to traffic

Old Plattsmouth Railroad Bridge (Cass County, Nebraska)
Main spans, 1880
Lost Whipple through truss bridge over Missouri River
Replaced by new bridge

Riverside Avenue Bridge (Fairfield County, Connecticut)
Built 1871
Whipple through truss bridge over Northeast Corridor (Metro North Railroad) on Riverside Avenue
Open to traffic

Valley Road Bridge (York County, Pennsylvania)
Fabricator, 1870
Wrought iron pony truss bridge over Valley Road on the Stewartstown Railroad
Intact, but out of service since 2004

White Water Creek Bridge (Dubuque County, Iowa)
Built ca. 1940
Through truss bridge over White Water Creek on Pilot Grove Road
Open to traffic

Windsor Harbor Bridge (Jefferson County, Missouri)
Built 1875
Wrought-iron through truss over Rock Creek on Windsor Harbor Road in Kimmswick
Open to pedestrians only

Yellow Creek Bridge (Bedford County, Pennsylvania)
Built 1889
Through truss bridge over Yellow Creek on TR 655
Open to traffic