I-90 SKYWAY over 71ST ST


+41.76566, -87.60805
41°45'56" N, 87°36'29" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:I-90 SKYWAY over 71ST ST
Structure number:016630200000000
Old structure number:000016630203773 (from 1992 edition)
Location:0.1 M E COTTAGE P7C
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Tolls:Yes, on toll road [2]
Length of largest span:97.4 ft. [29.7 m]
Total length:106.0 ft. [32.3 m]
Roadway width between curbs:112.2 ft. [34.2 m]
Deck width edge-to-edge:118.4 ft. [36.1 m]
Skew angle:44°
Owner:City or Municipal Highway Agency [04]
Year built:1958
Year reconstructed:1994
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Main span material:Steel [3]
Main span design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]

Latest Available Inspection: August 2015 

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:34,000 [as of 2013]
Truck traffic:13% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Superior to present desirable criteria [9]
Underclearances appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Operating rating:48.8 tons [44.4 metric tons]
Inventory rating:35.6 tons [32.4 metric tons]
Sufficiency rating:88.9

Previous Inspections 

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
August 201588.9FairSatisfactoryGoodSatisfactory-34000
September 201388.9FairGoodGoodSatisfactory-34000
September 201185.9FairGoodGoodSatisfactory-42100
October 200984.5FairGoodGoodSatisfactory-47900
September 200884.5FairGoodGoodSatisfactory-47900
November 200784.6FairGoodGoodSatisfactory-47700
November 200584.6FairGoodGoodSatisfactory-47700
October 200484.6FairGoodGoodSatisfactory-47700
November 200384.6FairGoodGoodSatisfactory-47700
November 200183.7FairGoodSatisfactorySatisfactory-51300
August 200083.7FairGoodSatisfactorySatisfactory-51300
September 199985.2FairGoodSatisfactorySatisfactory-45100
September 199792.9FairVery GoodSatisfactoryGood-12900
August 199594.1FairVery GoodSatisfactoryGood-12900
August 199492.0FairVery GoodSatisfactoryGood-12900
November 199381.6FairFairFairFair-12900
May 199281.6FairFairFairFair-12900
October 199081.6FairFairFairFair-12900