Facts
- Overview
- Concrete girder bridge over Gay Creek on CH 20
- Location
- Iroquois County, Illinois
- Status
- Open to traffic
- History
- Built ca. 1920
- Design
- Concrete pony girder
- Dimensions
-
Length of largest span: 46.9 ft.
Total length: 47.9 ft.
Deck width: 18.0 ft.
- Recognition
- Eligible for the National Register of Historic Places
- Approximate latitude, longitude
- +40.58467, -87.74000 (decimal degrees)
40°35'05" N, 87°44'24" W (degrees°minutes'seconds") - Inventory numbers
- IL 038-0124 (Illinois bridge number)
BH 15313 (Bridgehunter.com ID) - Inspection (as of 12/2005)
- Deck condition rating: Fair (5 out of 9)
Superstructure condition rating: Fair (5 out of 9)
Substructure condition rating: Satisfactory (6 out of 9)
Appraisal: Not deficient
Sufficiency rating: 84.7 (out of 100) - Average daily traffic (as of 2002)
- 75
Comments
This bridge is one of many concrete varieties in this area.
This is a one lane bridge, and something I thought was unusual is if you look at the end view picture you’ll notice that so is the road. Not only is the bridge concrete but also the entire road.
This is known as a “half slab” road; only the center section is paved. Although not really visible in these photos, there are wide gravel shoulders on either side so when passing oncoming traffic you simply drop one side of your vehicle over onto the gravel and hopefully the other vehicle does the same. These roads seem to be unique to this area or at least they still exist here. I’m guessing that the road was most likely built at the time as the bridge.
This was the only bridge I’ve found so far that has a builder’s plaque.
