The original line was built with timber bents. When C&NW took over the line they widened the substructures by removing the timber trestles and building more substantial concrete and steel for a future 2nd track. This track was never added.
I actually was in contact with someone who has the blueprints for this bridge. As reported to me, the superstructure of the bridge was built in 1920 by Wisconsin Bridge & Iron works, and the substructure built by Widell Company. Eager for pictures!
This thing is a beast. 2nd line removed or never placed....looooong walk down recently-opened stretch of rail-to-trail to this one, at least one plaque removed but sounds like research has it at 1913 or so. Just a monster, and a beautiful spot. Fun visit.
This bridge is now open to the public for pedestrian and bicycle use only.
Work has begun on the Sangamon Valley Trail extension. Main structure will remain but the deck will be redone for bicycle/pedestrian usage.
This bridge was repurposed and opened to pedestrians in November 2017 as part of the Sangamon Valley Trail.