IL 43 NB (HARLEM) over RR - CN


+41.79790, -87.80202
41°47'52" N, 87°48'07" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:IL 43 NB (HARLEM) over RR - CN
Structure number:016031800000000
Old structure number:000016031804060 (from 1992 edition)
Location:0.1 M S I-55
Purpose:Carries highway over railroad
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:74.2 ft. [22.6 m]
Total length:217.9 ft. [66.4 m]
Roadway width between curbs:48.6 ft. [14.8 m]
Deck width edge-to-edge:55.4 ft. [16.9 m]
Vertical clearance below bridge:21.0 ft. [6.4 m]
Owner:State Highway Agency [01]
Year built:1931
Year reconstructed:1990
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Number of main spans:4
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: October 2015 

Status:Open, no restriction [A]
Average daily traffic:44,700 [as of 2015]
Truck traffic:17% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Better than present minimum criteria [7]
Deck geometry appraisal:Basically intolerable requiring high priority of replacement [2]
Underclearances appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Operating rating:96.9 tons [88.1 metric tons]
Inventory rating:58.4 tons [53.1 metric tons]
Evaluation:Functionally obsolete [2]
Sufficiency rating:65.0
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$2,786,000

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
October 201565.0Functionally obsoleteGoodGoodGood44700
November 201365.0Functionally obsoleteGoodGoodGood45600
November 201168.1Functionally obsoleteGoodSatisfactoryGood21900
January 201068.1Functionally obsoleteGoodSatisfactoryGood21900
January 200867.2Functionally obsoleteGoodSatisfactoryGood23750
January 200667.4Functionally obsoleteGoodSatisfactoryGood23200
April 200468.3Functionally obsoleteGoodGoodGood21500
November 200169.8Functionally obsoleteGoodGoodGood18500
March 200067.6Functionally obsoleteGoodGoodGood22950
July 199767.6Functionally obsoleteGoodVery GoodGood22950
July 199468.0Not deficientGoodVery GoodGood18150
October 199367.1Not deficientGoodVery GoodGood19850
May 199266.3Not deficientVery GoodVery GoodVery Good21500
April 199164.8Not deficientPoorVery GoodVery Good21500