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Photo taken by Tom Hall

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Photo taken by Tom Hall

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Map 

Vicinity Map

Vicinity map

Map links:

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")
Approximate UTM coordinates
16/437375/4492915 (zone/easting/northing)
USGS topographic map
Wellington
Inventory numbers
IL 038-0124 (Illinois bridge number)
BH 15313 (Bridgehunter.com ID)
Inspection (as of 01/2008)
Deck condition rating: Fair (5 out of 9)
Superstructure condition rating: Fair (5 out of 9)
Substructure condition rating: Satisfactory (6 out of 9)
Sufficiency rating: 84.7 (out of 100)
Average daily traffic (as of 2002)
75

Sources 

  • Tom Hall - thomas [dot] hall [at] ffni [dot] com

Comments 

Gay Creek Bridge
Posted March 11, 2007, by Tom Hall (thomas [dot] hall [at] ffni [dot] com)

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.

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