New Chain of Rocks Bridge

Photos

eastbound approach

on missouri end

Photo taken by Kim Harvey in July 2008

BH Photo #116473

Overview: Bridge over Mississippi River on I 270
Location: Madison County, Illinois, and St. Louis, Missouri
Status: Open to traffic
Future prospects: Slated for replacement but no time frame given. IDOT has started a study that is considering replacement of this bridge.
History: Built 1966
Dimensions: Length of largest span: 242.1 ft.
Total length: 5,411.4 ft. (1.0 mi.)
Deck width: 54.1 ft.
Also called: 270 Mississippi River Bridge
Chain of Rocks Bridge
Approximate latitude, longitude: +38.76417, -90.17222 (decimal degrees)
38°45'51" N, 90°10'20" W (degrees°minutes'seconds")
Approximate UTM coordinates: 15/745694/4294404 (zone/easting/northing)
Quadrangle map:: Columbia Bottom
Inventory numbers: IL 060-0035 (Illinois bridge number)
BH 36589 (Bridgehunter.com ID)
Inspection (as of 06/2012): Deck condition rating: Satisfactory (6 out of 9)
Superstructure condition rating: Serious (3 out of 9)
Substructure condition rating: Poor (4 out of 9)
Appraisal: Structurally deficient
Sufficiency rating: 24.0 (out of 100)
Average daily traffic (as of 2011): 54,000

New Chair of Rocks Bridge

Posted June 6, 2008, by Kim Harvey (AyrlieofRemora [at] yahoo [dot] com)