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I-90 SKYWAY over CONRAIL RR

Map

Coordinates:
+41.71489, -87.53785
41°42'54" N, 87°32'16" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I-90 SKYWAY over CONRAIL RR
Structure number:016642100000000
Old structure number:000016642105741 (from 1992 edition)
Location:0.19 M NW 100TH
Purpose:Carries highway over railroad
Route classification:Principal Arterial - Interstate (Urban) [11]
Tolls:Yes, on toll road [2]
Length of largest span:155.2 ft. [47.3 m]
Total length:404.9 ft. [123.4 m]
Roadway width between curbs:77.4 ft. [23.6 m]
Deck width edge-to-edge:83.0 ft. [25.3 m]
Vertical clearance below bridge:49.2 ft. [15.0 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 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:34,000 [as of 2016]
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]
Sufficiency rating:72.0
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$5,325,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
September 2017FairGoodFairGood3400072.0
September 2015FairGoodFairGood3400072.0
September 2013FairGoodFairVery Good3400072.0
September 2011FairVery GoodFairVery Good4210067.0
October 2009FairVery GoodFairVery Good4790067.0
September 2008FairVery GoodFairVery Good4790067.0
September 2007FairVery GoodFairVery Good4770067.0
November 2005FairExcellentFairVery Good4770067.0
October 2004FairExcellentFairVery Good4770067.0
October 2003PoorPoorPoorPoor4770045.8
September 2001PoorPoorPoorFair5130045.8
October 2000PoorPoorPoorFair5130045.8
September 1999PoorPoorPoorFair4510045.8
September 1997FairFairFairFair2490062.9
June 1995FairFairFairFair2510070.1
August 1994FairFairFairFair2510070.1
October 1993FairFairFairFair2510070.1
May 1992FairSatisfactorySatisfactoryFair2420071.7
November 1990FairSatisfactorySatisfactorySatisfactory2420086.2

Element Data

Source: National Bridge Elements dataset, 2018 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Steel Stringerlinear ft.932923900
Deck
Reinforced Concrete Decksq. ft.34,03817,01917,01900
Superstructure
Steel Trusslinear ft.621615600
Steel Floor Beamlinear ft.1,0251,0151000
Steel Gusset Plateeach7668800
Substructure
Reinforced Concrete Columneach1717000
Reinforced Concrete Pier Caplinear ft.2171229050
Joints
Strip Seal Jointlinear ft.164016400
Assembly with Sealeach8282000
Bearings
Elastomeric Bearingeach2424000
Pot Bearingeach88000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.1,23601,23600