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I-90 SKYWAY over ST LAWRENCE AVE

Map

Coordinates:
+41.76748, -87.61038
41°46'03" N, 87°36'37" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I-90 SKYWAY over ST LAWRENCE AVE
Structure number:016630100000000
Old structure number:000016630103772 (from 1992 edition)
Location:AT 70TH P7C
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Tolls:Yes, on toll road [2]
Length of largest span:125.7 ft. [38.3 m]
Total length:133.9 ft. [40.8 m]
Roadway width between curbs:103.7 ft. [31.6 m]
Deck width edge-to-edge:109.9 ft. [33.5 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: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:93.2

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
August 201593.2FairSatisfactorySatisfactorySatisfactory-34000
September 201393.2FairGoodSatisfactorySatisfactory-34000
September 201187.8FairGoodSatisfactorySatisfactoryFO42100
September 201086.9FairGoodSatisfactorySatisfactoryFO47900
September 200886.9FairGoodSatisfactorySatisfactoryFO47900
November 200787.0FairGoodSatisfactorySatisfactoryFO47700
November 200587.0FairGoodSatisfactorySatisfactoryFO47700
October 200487.0FairGoodSatisfactorySatisfactoryFO47700
November 200387.0FairGoodGoodSatisfactoryFO47700
November 200186.4FairVery GoodSatisfactorySatisfactoryFO51300
August 200086.4FairVery GoodSatisfactorySatisfactoryFO51300
September 199987.3FairVery GoodSatisfactorySatisfactoryFO45100
September 199792.1FairVery GoodSatisfactoryGoodFO12900
August 199596.1FairVery GoodSatisfactoryGood-12900
August 199496.1FairVery GoodSatisfactoryGood-12900
November 199383.7FairFairFairFair-12900
May 199283.7FairFairFairFair-12900
October 199083.7FairFairFairFair-12900

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Superstructure
Steel Girder/Beamlinear ft.804804000
Deck
Reinforced Concrete Decksq. ft.14,33913,63769480
Substructure
Reinforced Concrete Abutmentlinear ft.3052911310
Reinforced Concrete Pier Caplinear ft.3303032700
Joints
Strip Seal Jointlinear ft.153151002
Compression Jointlinear ft.1321220010
Bearings
Elastomeric Bearingeach1501500
Fixed Bearingeach1501410
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.521051920