Canal

Aqueduct Number 5 over Eel River for Wabash and Erie Canal (Cass County, Indiana)
Canal opened Logansport up for trade, but this aqueduct played an important role in crossing the Eel River on it route from Toledo to Evansville during the mid 1800's. Canal was abandoned in 1876.
Lost Bridge over Eel River on Wabash and Erie Canal in Logansport
Lost

Auburn Tunnel (Schuylkill County, Pennsylvania)
Built 1821; daylighted 1857
Abandoned tunnel on Schuylkill Canal
Derelict/abandoned/open cut

Columbia Canal Bridge (Richland County, South Carolina)
Built 1906 by the american bridge co.
Warren through truss bridge over Columbia Canal on Three River Greenway/Pipe
Open to pedestrians