THROOP ST over I- 57


+41.69000, -87.65000
41°41'24" N, 87°39'00" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:THROOP ST over I- 57
Structure number:016203200000000
Old structure number:000016203226238 (from 1992 edition)
Location:1.5 M SW IL 1
Purpose:Carries highway over highway
Route classification:Local (Urban) [19]
Length of largest span:136.5 ft. [41.6 m]
Total length:263.5 ft. [80.3 m]
Roadway width between curbs:45.9 ft. [14.0 m]
Deck width edge-to-edge:63.0 ft. [19.2 m]
Vertical clearance below bridge:13.1 ft. [4.0 m]
Skew angle:45°
Owner:State Highway Agency [01]
Year built:1965
Year reconstructed:2004
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: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: May 2016

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:5,000 [as of 1997]
Truck traffic:3% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Basically intolerable requiring high priority of replacement [2]
Underclearances appraisal:Meets minimum tolerable limits to be left in place as is [4]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:77.0
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$3,858,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
May 2016FairGoodSatisfactorySatisfactory500077.0
May 2014FairGoodSatisfactoryGood500077.0
August 2012FairGoodSatisfactoryGood500079.0
September 2010FairGoodSatisfactoryGood500979.0
November 2008FairGoodSatisfactoryGood500979.0
December 2006FairVery GoodSatisfactoryGood500979.0
January 2005FairExcellentSatisfactoryGood500979.0
August 2003PoorPoorSatisfactoryFair500965.0
August 2002PoorPoorSatisfactoryFair500965.0
August 2001PoorPoorSatisfactoryFair500965.0
December 1999PoorPoorSatisfactoryFair500965.0
February 1999PoorPoorSatisfactoryFair500965.0
March 1997PoorPoorSatisfactoryFair500965.0
November 1995PoorPoorSatisfactoryFair-80.0
January 1994PoorPoorSatisfactoryFair-80.0
June 1993PoorPoorSatisfactoryFair-80.0
February 1992PoorPoorGoodFair-80.0