THROOP ST over I- 57


+41.69904, -87.65474
41°41'57" N, 87°39'17" 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:15.7 ft. [4.8 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]
Operating rating:72.4 tons [65.8 metric tons]
Inventory rating:43.5 tons [39.5 metric tons]
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 

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
May 201677.0FairGoodSatisfactorySatisfactoryFO5000
May 201477.0FairGoodSatisfactoryGoodFO5000
August 201279.0FairGoodSatisfactoryGood-5000
September 201079.0FairGoodSatisfactoryGood-5009
November 200879.0FairGoodSatisfactoryGood-5009
December 200679.0FairVery GoodSatisfactoryGood-5009
January 200579.0FairExcellentSatisfactoryGood-5009
August 200365.0PoorPoorSatisfactoryFairSD5009
August 200265.0PoorPoorSatisfactoryFairSD5009
August 200165.0PoorPoorSatisfactoryFairSD5009
December 199965.0PoorPoorSatisfactoryFairSD5009
February 199965.0PoorPoorSatisfactoryFairSD5009
March 199765.0PoorPoorSatisfactoryFairSD5009
November 199580.0PoorPoorSatisfactoryFairSD-
January 199480.0PoorPoorSatisfactoryFairSD-
June 199380.0PoorPoorSatisfactoryFairSD-
February 199280.0PoorPoorGoodFairSD-