CHICAGO RD over I-39 & US 51


+41.69872, -89.03171
41°41'55" N, 89°01'54" 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 2016

Good/Fair/Poor Condition:Poor
Status:Open, no restriction [A]
Average daily traffic:950 [as of 2013]
Truck traffic:16% 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]
Operating rating:62.0 tons [56.4 metric tons]
Inventory rating:37.1 tons [33.7 metric tons]
Sufficiency rating:70.2

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
July 201670.2PoorSatisfactoryPoorSatisfactorySD950
December 201597.4FairSatisfactorySatisfactorySatisfactory-950
December 201397.4FairSatisfactorySatisfactorySatisfactory-950
January 201298.4FairSatisfactorySatisfactoryGood-950
February 201098.4FairSatisfactoryGoodGood-1000
February 200898.3FairSatisfactoryGoodGood-1200
February 200699.3FairSatisfactorySatisfactoryGood-1200
February 200499.3FairSatisfactoryGoodGood-1200
February 200299.3FairSatisfactoryGoodGood-1200
February 200099.3FairSatisfactoryGoodVery Good-1200
200099.4FairSatisfactoryGoodVery Good-950
February 199899.4GoodGoodGoodVery Good-950
February 199699.4GoodVery GoodVery GoodVery Good-950
February 199499.5GoodVery GoodVery GoodVery Good-850
February 199399.5GoodVery GoodVery GoodVery Good-850
January 199199.5GoodVery GoodVery GoodVery Good-850