CHICAGO RD over I-39 & US 51


+41.69857, -89.03132
41°41'55" N, 89°01'53" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:CHICAGO RD over I-39 & US 51
Structure number:052005500000000
Old structure number:000052005511144 (from 1992 edition)
Location:4.8 MI S OF US 30
Purpose:Carries highway overpass over highway
Route classification:Major Collector (Rural) [07]
Length of largest span:130.6 ft. [39.8 m]
Total length:306.1 ft. [93.3 m]
Roadway width between curbs:44.0 ft. [13.4 m]
Deck width edge-to-edge:64.0 ft. [19.5 m]
Vertical clearance below bridge:16.4 ft. [5.0 m]
Skew angle:28°
Owner:State Highway Agency [01]
Year built:1984
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18+Mod / HS 20+Mod [6]
Number of main spans:2
Main spans material:Steel continuous [4]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]

Latest Available Inspection: July 2017

Good/Fair/Poor Condition:Poor
Status:Open, no restriction [A]
Average daily traffic:1,000 [as of 2017]
Truck traffic:13% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Poor [4 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Meets minimum tolerable limits to be left in place as is [4]
Deck geometry appraisal:Superior to present desirable criteria [9]
Underclearances appraisal:Equal to present minimum criteria [6]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:69.4

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
July 2017PoorSatisfactoryPoorSatisfactory100069.4
July 2016PoorSatisfactoryPoorSatisfactory95070.2
December 2015FairSatisfactorySatisfactorySatisfactory95097.4
December 2013FairSatisfactorySatisfactorySatisfactory95097.4
January 2012FairSatisfactorySatisfactoryGood95098.4
February 2010FairSatisfactoryGoodGood100098.4
February 2008FairSatisfactoryGoodGood120098.3
February 2006FairSatisfactorySatisfactoryGood120099.3
February 2004FairSatisfactoryGoodGood120099.3
February 2002FairSatisfactoryGoodGood120099.3
February 2000FairSatisfactoryGoodVery Good120099.3
2000FairSatisfactoryGoodVery Good95099.4
February 1998GoodGoodGoodVery Good95099.4
February 1996GoodVery GoodVery GoodVery Good95099.4
February 1994GoodVery GoodVery GoodVery Good85099.5
February 1993GoodVery GoodVery GoodVery Good85099.5
January 1991GoodVery GoodVery GoodVery Good85099.5