The current bridge crosses the Illinois River in Seneca, Illinois. The original bridge at this site was likely wooden or iron construction dating to 1853. It was built for the Rock Island Line. This was replaced by a steel bridge. The current bridge was a modification of the steel bridge to a vertical lift bridge in the 1930’s.
The description of this bridge is as follows: metal 6 panel pin-connected Pratt through Truss, Movable: vertical lift (tower drive) and approach spans: metal 6 panel pin-connected Pratt through truss., fixed. Builder/contractor is unknown.
Main span length is 180 feet. Structure length is 650 feet. There is one track.
Current user of the bridge is CSX.