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31ST ST over KILBOURN AVE

Map 

Coordinates:
+41.83669, -87.73647
41°50'12" N, 87°44'11" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts 

Name:31ST ST over KILBOURN AVE
Structure number:016087200000000
Old structure number:000016087204485 (from 1992 edition)
Location:0.5 M E IL 50
Purpose:Carries highway over highway
Route classification:Minor Arterial (Urban) [16]
Length of largest span:66.6 ft. [20.3 m]
Total length:175.9 ft. [53.6 m]
Roadway width between curbs:31.5 ft. [9.6 m]
Deck width edge-to-edge:47.6 ft. [14.5 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 / HS 20 [5]
Number of main spans:3
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:Equal to present minimum criteria [6]
Roadway alignment appraisal:Equal to present minimum criteria [6]
Scour condition:Bridge not over waterway. [N]
Operating rating:82.3 tons [74.8 metric tons]
Inventory rating:49.5 tons [45.0 metric tons]
Sufficiency rating:92.3
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$2,520,000

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
December 201592.3Not deficientVery GoodGoodGood4925
December 201190.0Not deficientVery GoodGoodGood6600
December 200978.4Not deficientExcellentGoodGood14600
November 200774.3Functionally obsoleteFairSatisfactorySatisfactory14600
December 200574.1Functionally obsoleteFairSatisfactorySatisfactory15700
February 200474.1Functionally obsoleteFairSatisfactorySatisfactory15700
November 200274.1Functionally obsoleteFairSatisfactorySatisfactory15700
March 200174.0Functionally obsoleteFairSatisfactorySatisfactory16400
June 199975.0Functionally obsoleteSatisfactorySatisfactorySatisfactory16400
July 199773.4Functionally obsoleteGoodSatisfactorySatisfactory25400
October 199673.4Functionally obsoleteGoodSatisfactorySatisfactory25400
August 199475.2Not deficientGoodSatisfactorySatisfactory25400
October 199377.5Not deficientGoodSatisfactorySatisfactory13500
June 199277.5Not deficientGoodGoodGood13500
April 199178.5Not deficientGoodGoodGood13500