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Sterling-Rock Falls Bridge


Photo taken by Cody Camps

BH Photo #324659


Street View 


Lost Open-spandrel arch bridge over Rock River on Ill 40 in Sterling
Rock Falls, Whiteside County, Illinois
Replaced by a new bridge
Built 1923; rehabilitated 1982; closed 2012
Open-spandrel arch
Length of largest span: 86.0 ft.
Total length: 1,057.1 ft.
Deck width: 52.2 ft.
Also called
1st Avenue Bridge
Approximate latitude, longitude
+41.78583, -89.69333   (decimal degrees)
41°47'09" N, 89°41'36" W   (degrees°minutes'seconds")
Approximate UTM coordinates
16/276188/4629504 (zone/easting/northing)
Quadrangle map:
Average daily traffic (as of 2009)
Inventory numbers
IL 098-0014 (Illinois bridge number)
BH 43282 (Bridgehunter.com ID)
Inspection report (as of May 2009)
Overall condition: Poor
Superstructure condition rating: Poor (4 out of 9)
Substructure condition rating: Fair (5 out of 9)
Deck condition rating: Poor (4 out of 9)
Sufficiency rating: 38 (out of 100)
View more at BridgeReports.com

Update Log 

  • December 22, 2018: New photo from Melissa Brand-Welch
  • February 5, 2017: New photo from Dana and Kay Klein
  • May 16, 2015: Updated by Luke: Changed type based on 1928 postcard
  • November 30, 2012: Updated by Cody Camps: Bridge has been replaced
  • May 3, 2010: New Street View added by Kim Harvey
  • August 25, 2009: Added by Kim Harvey

Related Bridges 



Sterling-Rock Falls Bridge
Posted November 28, 2012, by Cody Camps (cy_camps [at] hotmail [dot] com)

This bridge has been replaced and opened on October 15th. I'll try to post some new pictures next time I visit home. Here's some pictures from the demolition, as well as a link to a local news story showing Governor Quinn visiting the bridge.


Sterling-Rock Falls Bridge
Posted March 31, 2011, by Anthony Dillon (spansaver [at] hotmail [dot] com)

Yup....It's a WIBCo span. Portal embellishments are very much like the Laughery Creek Bridge with the addition of finials.

Sterling-Rock Falls Bridge
Posted March 31, 2011, by Nathan Holth (form3 [at] historicbridges [dot] org)

This pre-1900 photo from an IDOT report shows the previous bridge, a six span pin-connected Whipple through truss. It looks like the work of Wrought Iron Bridge Company.