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Overview: Cantilevered through truss bridge over the Illinois River on IL 17 at Lacon
Location: Marshall County, Illinois
Status: Open to two-lane traffic
History: Built 1939; rehabilitated 1990
Design: Cantilevered through truss
Dimensions: Length of largest span: 377.8 ft.
Total length: 1,572.7 ft.
Deck width: 26.2 ft.
Vertical clearance above deck: 16.3 ft.
Approximate latitude, longitude: +41.02639, -89.42056 (decimal degrees)
41°01'35" N, 89°25'14" W (degrees°minutes'seconds")
Approximate UTM coordinates: 16/296500/4544509 (zone/easting/northing)
USGS topographic map: Lacon
Inventory numbers: IL 062-0003 (Illinois bridge number)
BH 15513 (Bridgehunter.com ID)
Inspection (as of 05/2006): Deck condition rating: Satisfactory (6 out of 9)
Superstructure condition rating: Fair (5 out of 9)
Substructure condition rating: Fair (5 out of 9)
Appraisal: Functionally obsolete
Sufficiency rating: 52.1 (out of 100)
Average daily traffic (as of 2005): 7,000

Update Log

January 9, 2006: Posted photos from Bill Burmaster

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Bill Burmaster

Comments

Lacon Bridge

Posted January 23, 2008, by Anthony (ascriven1 [at] juno [dot] com)

Functionally Obsolete does NOT mean unsafe or dangerous. It only means that the bridge is not built to modern standards. For example, the Murray Baker Bridge (I-74) in Peoria is listed as functionally obsolete because it has no shoulders, which are part of any new multi-lane interstate highway bridge. A bridge being listed as functionally obsolete does not mean that is is decrepit and going to fall down, it just means that it is outdated by today's standards. If maintained, it can last just as long as any other bridge.

Lacon Bridge

Posted October 1, 2007, by Anonymous

if it is functionally obsolete why not fix it so noone has to be hurt or killed before you do smoething??????????????????

Lacon Bridge

Posted January 27, 2007, by Jim Frazier (jim [at] jimfrazier [dot] com)

Here's a photo I took in December 2006

Lacon Bridge

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