NARROWEST Covered Bridge in Illinois. Thompson Mill Bridge
N 39° 15.545 W 088° 49.095
16S E 343125 N 4347103
This is the NARROWEST of all the covered bridges in Illinois.
Waymark Code: WM8Z4C
Location: Illinois, United States
Date Posted: 06/03/2010
Views: 8
Thompson Mill Bridge.
The road on which this bridge is located, was once an important route
between Springfield anf Effingham.
The bridge was compleated in the atumn of 1868 at a cost of $2500, and maned for the owner of the first mill near here.
It is the narrowest of all the covered bridges in Illinois with a width of 10feet 7 inches. It is 11 feet 10 inches high, and the siding stops before reaching the top cord to allow light to come in under the roof. The howe truss system, which the bridge uses, consists of panels in which two members cross one diagonal. The truss of this bridge is 105 feet long.
The roof of the bridge protected the truss from the weather.
Errected by the Illinois Department of Transportation
and the Illinois State Historical Society. 1972
Type of documentation of superlative status: A plaque errected by the Illinois Department of Transportation and the Illinois State Histrorical Society.
Location of coordinates: N 39.15.545 W 88.49.095
Web Site: [Web Link]
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