3 votes

New Chain of Rocks Bridge


eastbound approach

on missouri end

Photo taken by Kim Harvey in July 2008

BH Photo #116473


Street View 


Bridge over Mississippi River on I 270
Madison County, Illinois, and St. Louis, Missouri
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.
Built 1966
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
Average daily traffic (as of 2015)
Inventory numbers
IL 060-0035 (Illinois bridge number)
BH 36589 (Bridgehunter.com ID)
Inspection report (as of June 2015)
Overall condition: Fair
Superstructure condition rating: Fair (5 out of 9)
Substructure condition rating: Fair (5 out of 9)
Deck condition rating: Fair (5 out of 9)
Sufficiency rating: 48.9 (out of 100)
View more at BridgeReports.com

Update Log 

  • March 8, 2017: New photos from Daniel Barnes
  • December 30, 2016: Updated by Kim Harvey: IDOT planning replacement
  • August 6, 2016: New photos from David Huffman
  • February 18, 2011: New photo from Kim Harvey
  • December 11, 2010: New photo from Kim Harvey
  • March 9, 2010: Updated by Kim Harvey: street view
  • July 4, 2008: New photos from Kim Harvey
  • June 26, 2008: Updated by Kim Harvey
  • June 25, 2008: Updated by Kim Harvey
  • May 1, 2008: Added by David B. Haun



New Chair of Rocks Bridge
Posted June 6, 2008, by Kim Harvey (AyrlieofRemora [at] yahoo [dot] com)

http://www.johnweeks.com/upper_mississippi/pagesC/umissC01a.html has a good write up