I-90 SKYWAY over AVE "M"


+41.71488, -87.53768
41°42'54" N, 87°32'16" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:I-90 SKYWAY over AVE "M"
Structure number:016642200000000
Old structure number:000016642205766 (from 1992 edition)
Location:0.11 M NW 100TH
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Tolls:Yes, on toll road [2]
Length of largest span:135.5 ft. [41.3 m]
Total length:375.0 ft. [114.3 m]
Roadway width between curbs:77.4 ft. [23.6 m]
Deck width edge-to-edge:83.0 ft. [25.3 m]
Owner:City or Municipal Highway Agency [04]
Year built:1958
Year reconstructed:2003
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:3
Main spans material:Steel continuous [4]
Main spans design:Truss - Deck [09]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Latex Concrete or similar additive [3]

Latest Available Inspection: September 2015 

Status:Open, no restriction [A]
Average daily traffic:34,000 [as of 2013]
Truck traffic:13% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Fair [5 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck geometry appraisal:Meets minimum tolerable limits to be left in place as is [4]
Underclearances appraisal:Superior to present desirable criteria [9]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Operating rating:78.1 tons [71.0 metric tons]
Inventory rating:46.6 tons [42.4 metric tons]
Sufficiency rating:72.0
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$2,259,000

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
September 201572.0Not deficientGoodFairGood34000
September 201372.0Not deficientGoodFairGood34000
September 201167.0Not deficientVery GoodFairGood42100
September 201067.0Not deficientVery GoodFairGood47900
September 200867.0Not deficientVery GoodFairGood47900
September 200767.0Not deficientVery GoodFairGood47700
November 200567.0Not deficientExcellentFairGood47700
November 200467.0Not deficientExcellentFairGood47700
November 200359.2Structurally deficientPoorFairFair47700
September 200148.2Structurally deficientPoorPoorFair51300
October 200048.2Structurally deficientPoorPoorFair51300
September 199948.2Structurally deficientPoorPoorFair45100
September 199759.9Functionally obsoleteFairFairSatisfactory24900
June 199567.1Functionally obsoleteFairFairSatisfactory25100
August 199467.1Functionally obsoleteFairFairSatisfactory25100
October 199367.1Functionally obsoleteFairFairSatisfactory25100
May 199268.7Functionally obsoleteSatisfactoryFairSatisfactory24200
November 199070.7Functionally obsoleteSatisfactoryFairSatisfactory24200