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


+41.80913, -87.63121
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:13.1 ft. [4.0 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 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:13,200 [as of 2018]
Truck traffic:23% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Very Good [8 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
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]
Sufficiency rating:94.7
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

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
October 2018FairGoodVery GoodSatisfactory1320094.7
October 2016GoodGoodVery GoodGood1060095.0
November 2014GoodGoodVery GoodGood1060095.0
November 2012GoodGoodVery GoodGood1190094.8
November 2010GoodGoodVery GoodGood1190095.4
June 2009GoodGoodVery GoodGood1030095.5
March 2007GoodVery GoodVery GoodGood1030095.5
January 2006GoodVery GoodVery GoodVery Good1030095.5
October 2001GoodExcellentExcellentVery Good1660993.2
January 2000PoorPoorFairPoor1660062.7
March 1999PoorPoorFairPoor1660060.6
February 1997PoorPoorFairPoor1660060.6
July 1995PoorPoorFairPoor1660061.8
June 1994PoorPoorFairPoor1660063.9
November 1993PoorPoorFairPoor1740063.8
July 1992PoorPoorSatisfactoryFair1740080.3
March 1991PoorPoorSatisfactoryFair1740080.3

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Girder/Beamlinear ft.1,8401,840000
Reinforced Concrete Decksq. ft.29,12227,4621,2604000
Reinforced Concrete Columneach3936300
Reinforced Concrete Pier Walllinear ft.404403010
Reinforced Concrete Abutmentlinear ft.196196000
Reinforced Concrete Pier Caplinear ft.6005881200
Strip Seal Jointlinear ft.2101921800
Elastomeric Bearingeach6056400
Fixed Bearingeach1212000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.614610400