51ST ST over I- 90,94 RYAN & CTA


+41.80181, -87.63098
41°48'07" N, 87°37'52" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:51ST ST over I- 90,94 RYAN & CTA
Structure number:016115700000000
Old structure number:000016115726291 (from 1992 edition)
Location:3.2 M S I-55
Purpose:Carries highway overpass over highway and railroad
Route classification:Collector (Urban) [17]
Length of largest span:71.9 ft. [21.9 m]
Total length:276.3 ft. [84.2 m]
Roadway width between curbs:78.1 ft. [23.8 m]
Deck width edge-to-edge:95.1 ft. [29.0 m]
Vertical clearance below bridge:13.1 ft. [4.0 m]
Skew angle:
Owner:State Highway Agency [01]
Year built:1962
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: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: September 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:8,550 [as of 2018]
Truck traffic:13% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Fair [5 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck geometry appraisal:Superior to present desirable criteria [9]
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:84.1

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
September 2018FairGoodGoodFair855084.1
September 2016FairGoodVery GoodSatisfactory1040095.0
September 2014FairGoodVery GoodSatisfactory1040095.0
October 2012GoodGoodVery GoodGood2060096.0
October 2010GoodGoodVery GoodGood21500086.6
December 2008GoodGoodVery GoodVery Good2060096.0
January 2006GoodVery GoodVery GoodVery Good1190096.4
September 2004GoodVery GoodExcellentVery Good1190096.4
October 2002PoorPoorFairPoor1190065.1
December 2000PoorPoorFairFair790081.5
December 1999PoorPoorFairFair790081.5
March 1998PoorPoorFairFair1490079.1
July 1996FairFairFairFair1490081.1
June 1994FairFairFairFair1490083.6
November 1993FairFairFairFair1060084.0
July 1992FairFairFairFair1060084.0
March 1991FairFairFairFair1060084.0

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Girder/Beamlinear ft.1,6571,657000
Reinforced Concrete Decksq. ft.26,18525,78540000
Reinforced Concrete Columneach3838000
Reinforced Concrete Pier Walllinear ft.3893771110
Reinforced Concrete Abutmentlinear ft.1901325710
Reinforced Concrete Pier Caplinear ft.57937920000
Strip Seal Jointlinear ft.192188400
Elastomeric Bearingeach7070000
Fixed Bearingeach1414000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.552549030