31ST ST over RR - BNSF & BRC


+41.83667, -87.73902
41°50'12" N, 87°44'20" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:31ST ST over RR - BNSF & BRC
Structure number:016087100000000
Old structure number:000016087104484 (from 1992 edition)
Location:0.3 M E IL 50
Purpose:Carries highway over railroad
Route classification:Minor Arterial (Urban) [16]
Length of largest span:86.0 ft. [26.2 m]
Total length:495.1 ft. [150.9 m]
Roadway width between curbs:31.5 ft. [9.6 m]
Deck width edge-to-edge:47.6 ft. [14.5 m]
Vertical clearance below bridge:19.7 ft. [6.0 m]
Owner:State Highway Agency [01]
Year built:1957
Year reconstructed:2009
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:7
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: December 2015 

Status:Open, no restriction [A]
Average daily traffic:4,925 [as of 2014]
Truck traffic:18% of total traffic
Deck condition:Very Good [8 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:Meets minimum tolerable limits to be left in place as is [4]
Underclearances appraisal:Basically intolerable requiring high priority of replacement [2]
Roadway alignment appraisal:Equal to present minimum criteria [6]
Scour condition:Bridge not over waterway. [N]
Operating rating:75.6 tons [68.7 metric tons]
Inventory rating:45.2 tons [41.1 metric tons]
Sufficiency rating:83.2
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$7,089,000

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
December 201583.2Not deficientVery GoodGoodGood4925
December 201182.9Not deficientVery GoodGoodGood6600
December 200974.2Not deficientExcellentGoodGood14600
November 200757.4Structurally deficientPoorFairFair14600
December 200557.1Structurally deficientPoorFairFair15700
February 200470.9Functionally obsoleteFairSatisfactorySatisfactory15700
November 200270.9Functionally obsoleteFairSatisfactorySatisfactory15700
March 200170.8Functionally obsoleteFairSatisfactorySatisfactory16400
July 199970.8Functionally obsoleteFairSatisfactorySatisfactory16400
July 199769.0Functionally obsoleteFairSatisfactorySatisfactory25400
October 199669.0Functionally obsoleteFairSatisfactorySatisfactory25400
August 199470.9Functionally obsoleteFairSatisfactorySatisfactory25400
June 199274.5Functionally obsoleteSatisfactoryGoodSatisfactory12600
April 199177.6Not deficientSatisfactoryGoodSatisfactory12600