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

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Steel Girder/Beamlinear ft.1,8401,840000
Reinforced Concrete Decksq. ft.29,12227,8621,26000
Reinforced Concrete Columneach3939000
Reinforced Concrete Pier Walllinear ft.404403010
Reinforced Concrete Abutmentlinear ft.196196000
Reinforced Concrete Pier Caplinear ft.600600000
Strip Seal Jointlinear ft.2101921800
Elastomeric Bearingeach6060000
Fixed Bearingeach1212000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.614612200