47TH ST over I- 90,94 RYAN & CTA


+41.80903, -87.63119
41°48'33" N, 87°37'52" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:47TH ST over I- 90,94 RYAN & CTA
Structure number:016115600000000
Old structure number:000016115626290 (from 1992 edition)
Location:2.7 M S I-55
Purpose:Carries highway overpass over highway and railroad
Route classification:Minor Arterial (Urban) [16]
Length of largest span:74.2 ft. [22.6 m]
Total length:306.8 ft. [93.5 m]
Roadway width between curbs:74.2 ft. [22.6 m]
Deck width edge-to-edge:95.1 ft. [29.0 m]
Vertical clearance below bridge:15.1 ft. [4.6 m]
Skew angle:14°
Owner:State Highway Agency [01]
Year built:1960
Year reconstructed:1999
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:5
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 2016

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:10,600 [as of 2014]
Truck traffic:16% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Very Good [8 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: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:98.0 tons [89.1 metric tons]
Inventory rating:62.7 tons [57.0 metric tons]
Sufficiency rating:95.0
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$7,152,000

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
October 201695.0GoodGoodVery GoodGood-10600
November 201495.0GoodGoodVery GoodGood-10600
November 201294.8GoodGoodVery GoodGood-11900
November 201095.4GoodGoodVery GoodGood-11900
June 200995.5GoodGoodVery GoodGood-10300
March 200795.5GoodVery GoodVery GoodGood-10300
January 200695.5GoodVery GoodVery GoodVery Good-10300
October 200193.2GoodExcellentExcellentVery GoodFO16609
January 200062.7PoorPoorFairPoorSD16600
March 199960.6PoorPoorFairPoorSD16600
February 199760.6PoorPoorFairPoorSD16600
July 199561.8PoorPoorFairPoorSD16600
June 199463.9PoorPoorFairPoorSD16600
November 199363.8PoorPoorFairPoorSD17400
July 199280.3PoorPoorSatisfactoryFairSD17400
March 199180.3PoorPoorSatisfactoryFairSD17400