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 

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. ratingEvaluationDeckSuper.Sub.ADT
August 201588.9Not deficientSatisfactoryGoodSatisfactory34000
September 201388.9Not deficientGoodGoodSatisfactory34000
September 201185.9Not deficientGoodGoodSatisfactory42100
October 200984.5Not deficientGoodGoodSatisfactory47900
September 200884.5Not deficientGoodGoodSatisfactory47900
November 200784.6Not deficientGoodGoodSatisfactory47700
November 200584.6Not deficientGoodGoodSatisfactory47700
October 200484.6Not deficientGoodGoodSatisfactory47700
November 200384.6Not deficientGoodGoodSatisfactory47700
November 200183.7Not deficientGoodSatisfactorySatisfactory51300
August 200083.7Not deficientGoodSatisfactorySatisfactory51300
September 199985.2Not deficientGoodSatisfactorySatisfactory45100
September 199792.9Not deficientVery GoodSatisfactoryGood12900
August 199594.1Not deficientVery GoodSatisfactoryGood12900
August 199492.0Not deficientVery GoodSatisfactoryGood12900
November 199381.6Not deficientFairFairFair12900
May 199281.6Not deficientFairFairFair12900
October 199081.6Not deficientFairFairFair12900