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

CSXT 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 through truss bridge over Illinois Central RR on Fairground Street in Vicksburg
Abandoned

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
Through truss bridge over Norfolk Southern Railway on Wilson Road (Route 653)
Open to traffic

Valley Road Bridge (York County, Pennsylvania)
Fabricator, 1870
Wrought iron pony truss bridge over Valley Road on the Stewartstown Railroad
Unknown status

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