Viaduct
CTA - Chicago 'L' (Cook County, Illinois)
Built in stages 1892 to 2021. CTA created October 1, 1947 by combining all previous rapid transit lines.Viaduct and tunnel system across entire City of Chicago on Chicago Transit AuthorityOpen to traffic
Eagle Avenue Bridge (Cuyahoga County, Ohio)
Built 1930-31 by the Strobel Steel Construction Co.; rehabilitated 1991; closed 2005Vertical lift bridge over Cuyahoga River on Eagle AvenueIntact but closed to all traffic
PRCo - Spruce Run Viaduct (Allegheny County, Pennsylvania)
Lost Warren deck truss with alternating verticals bridge over Spruce Run on Pittsburgh Railways CoReplaced by a new bridge
Ruthon Point Viaduct (Hood River County, Oregon)
Built 1918Concrete tee beam bridge on Formerly US 30Intact but closed to all traffic
Spalding Viaduct (Nez Perce County, Idaho)
Concrete T-beam bridge over Camas Prairie RailNet on Johnson RoadIntact but closed to all traffic