Share:

I-90 SKYWAY over 71ST ST

Map

Coordinates:
+41.76566, -87.60805
41°45'56" N, 87°36'29" W

Facts

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

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Superstructure
Steel Girder/Beamlinear ft.636636000
Deck
Reinforced Concrete Decksq. ft.13,11512,541559150
Substructure
Reinforced Concrete Abutmentlinear ft.3293061850
Reinforced Concrete Pier Caplinear ft.36131831120
Joints
Strip Seal Jointlinear ft.165016500
Compression Jointlinear ft.104250079
Bearings
Elastomeric Bearingeach1801800
Fixed Bearingeach1801800
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.413041120