Share:

I-90 SKYWAY over COTTAGE GROVE AVE

Map 

Coordinates:
+41.76397, -87.60550
41°45'50" N, 87°36'20" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts 

Name:I-90 SKYWAY over COTTAGE GROVE AVE
Structure number:016630300000000
Old structure number:000016630303774 (from 1992 edition)
Location:0.1 M SE 71ST P7C
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Tolls:Yes, on toll road [2]
Length of largest span:121.4 ft. [37.0 m]
Total length:129.9 ft. [39.6 m]
Roadway width between curbs:99.7 ft. [30.4 m]
Deck width edge-to-edge:106.0 ft. [32.3 m]
Skew angle:45°
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:Satisfactory [6 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:Equal to present minimum criteria [6]
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:90.0

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
August 201590.0Not deficientSatisfactorySatisfactorySatisfactory34000
September 201390.0Not deficientGoodSatisfactorySatisfactory34000
September 201183.7Functionally obsoleteGoodSatisfactorySatisfactory42100
September 201082.2Functionally obsoleteGoodSatisfactorySatisfactory47900
September 200882.2Functionally obsoleteGoodSatisfactorySatisfactory47900
November 200782.3Functionally obsoleteGoodSatisfactorySatisfactory47700
November 200586.8Not deficientGoodSatisfactorySatisfactory47700
November 200482.3Functionally obsoleteSatisfactorySatisfactorySatisfactory47700
November 200382.3Functionally obsoleteGoodSatisfactorySatisfactory47700
November 200181.4Functionally obsoleteGoodSatisfactoryGood51300
August 200081.4Functionally obsoleteGoodSatisfactoryGood51300
October 199982.9Functionally obsoleteGoodSatisfactoryGood45100
September 199790.8Functionally obsoleteVery GoodSatisfactoryGood12900
August 199593.0Not deficientVery GoodSatisfactoryGood12900
August 199493.0Not deficientVery GoodSatisfactoryGood12900
November 199380.5Not deficientFairFairFair12900
May 199280.5Not deficientFairFairFair12900
October 199080.5Not deficientFairFairSatisfactory12900