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I480/20TH ST EXIT over CHICAGO/DAVENPORT/20TH

Map

Coordinates:
+41.26230, -95.94195
41°15'44" N, 95°56'31" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I480/20TH ST EXIT over CHICAGO/DAVENPORT/20TH
Structure number:S480 00310A
Location:IN OMAHA
Purpose:Carries highway overpass over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:71.9 ft. [21.9 m]
Total length:621.1 ft. [189.3 m]
Roadway width between curbs:31.5 ft. [9.6 m]
Deck width edge-to-edge:34.1 ft. [10.4 m]
Vertical clearance below bridge:9.8 ft. [3.0 m]
Owner:State Highway Agency [01]
Year built:1970
Year reconstructed:1997
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:10
Main spans material:Steel continuous [4]
Main spans design:Box Beam or girders - Single or Spread [06]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: August 2016

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:14,400 [as of 2003]
Truck traffic:7% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck geometry appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Underclearances appraisal:Basically intolerable requiring high priority of corrrective action [3]
Roadway alignment appraisal:Equal to present minimum criteria [6]
Pier/abutment protection:Navigation protection not required [1]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:64.9
Recommended work:Widening of existing bridge with deck rehabilitation or replacement. [34]

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
August 2016FairGoodSatisfactorySatisfactory1440064.9
August 2014FairGoodSatisfactoryGood1440064.9
August 2012FairVery GoodSatisfactoryGood1440077.1
November 2011FairVery GoodSatisfactoryVery Good1440077.1
November 2009FairVery GoodSatisfactoryVery Good1440087.7
November 2007PoorVery GoodPoorVery Good1440060.3
March 2005GoodExcellentVery GoodVery Good1440088.2
June 2003FairExcellentSatisfactoryVery Good1440088.2
March 2001FairExcellentSatisfactoryVery Good1440088.2
July 1999FairExcellentSatisfactoryVery Good1440088.2
May 1997FairExcellentSatisfactoryGood2070087.5
January 1997FairSatisfactoryFairSatisfactory1130077.3
October 1994FairSatisfactoryFairSatisfactory1130078.9
July 1992FairSatisfactoryFairSatisfactory1130078.9
July 1990FairSatisfactoryGoodGood1130090.0

Element Data

Source: National Bridge Elements dataset, 2018 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Steel Closed Web/Box Girderlinear ft.1,2421,2293100
Steel Protective Coatingsq. ft.79,48879,4730150
Deck
Reinforced Concrete Decksq. ft.17,81817,815300
Substructure
Reinforced Concrete Pier Walllinear ft.121952600
Reinforced Concrete Abutmentlinear ft.935822130
Steel Pier Caplinear ft.9999000
Steel Protective Coatingsq. ft.653653000
Reinforced Concrete Pier Caplinear ft.2626000
Bearings
Elastomeric Bearingeach22000
Movable Bearingeach80800
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.1,0421386252790