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: November 2014 

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. ratingEvaluationDeckSuper.Sub.ADT
November 201495.0Not deficientGoodVery GoodGood10600
November 201294.8Not deficientGoodVery GoodGood11900
November 201095.4Not deficientGoodVery GoodGood11900
June 200995.5Not deficientGoodVery GoodGood10300
March 200795.5Not deficientVery GoodVery GoodGood10300
January 200695.5Not deficientVery GoodVery GoodVery Good10300
October 200193.2Functionally obsoleteExcellentExcellentVery Good16609
January 200062.7Structurally deficientPoorFairPoor16600
200062.7Structurally deficientPoorFairPoor16600
March 199960.6Structurally deficientPoorFairPoor16600
February 199760.6Structurally deficientPoorFairPoor16600
July 199561.8Structurally deficientPoorFairPoor16600
June 199463.9Structurally deficientPoorFairPoor16600
November 199363.8Structurally deficientPoorFairPoor17400
July 199280.3Structurally deficientPoorSatisfactoryFair17400
March 199180.3Structurally deficientPoorSatisfactoryFair17400