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I-90 SKYWAY over STONY ISLAND AVE

Map

Coordinates:
+41.74985, -87.58575
41°44'59" N, 87°35'09" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I-90 SKYWAY over STONY ISLAND AVE
Structure number:016640400000000
Old structure number:000016640404264 (from 1992 edition)
Location:0.1 M S 79TH P7C
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Tolls:Yes, on toll road [2]
Length of largest span:142.7 ft. [43.5 m]
Total length:294.6 ft. [89.8 m]
Roadway width between curbs:100.1 ft. [30.5 m]
Deck width edge-to-edge:106.0 ft. [32.3 m]
Vertical clearance below bridge:14.1 ft. [4.3 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]
Number of main spans:2
Main spans material:Steel continuous [4]
Main spans 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: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: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:84.1

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
August 201584.1FairSatisfactorySatisfactorySatisfactory-34000
September 201384.1FairSatisfactorySatisfactorySatisfactory-34000
September 201184.0FairSatisfactorySatisfactorySatisfactory-42100
October 201073.0FairSatisfactorySatisfactoryFair-47900
September 200873.0FairSatisfactorySatisfactoryFair-47900
November 200773.0FairSatisfactorySatisfactoryFair-47700
November 200573.0FairSatisfactorySatisfactoryFair-47700
October 200473.0FairSatisfactorySatisfactoryFair-47700
October 200373.0FairSatisfactorySatisfactoryFair-47700
October 200184.0FairSatisfactorySatisfactorySatisfactory-51300
October 200084.0FairSatisfactorySatisfactorySatisfactory-51300
October 199984.0FairSatisfactorySatisfactorySatisfactory-45100
August 199792.1FairSatisfactorySatisfactoryGood-12900
August 199592.1FairVery GoodSatisfactoryGood-12900
August 199492.1FairVery GoodSatisfactoryGood-12900
November 199379.3FairFairFairFair-12900
May 199279.3FairFairFairFair-12900
October 199081.3FairFairFairFair-12900

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Superstructure
Steel Girder/Beamlinear ft.1,7671,760700
Deck
Reinforced Concrete Decksq. ft.30,60615,24515,349120
Substructure
Steel Columneach1515000
Reinforced Concrete Abutmentlinear ft.2952744170
Steel Pileeach2522300
Reinforced Concrete Pier Caplinear ft.30817641280
Joints
Strip Seal Jointlinear ft.294741414831
Compression Jointlinear ft.200200000
Open Jointlinear ft.9090000
Bearings
Elastomeric Bearingeach3232000
Fixed Bearingeach1616000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.1,16380435900