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

Map 

Coordinates:
+41.26279, -95.94246
41°15'46" N, 95°56'33" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts 

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:12.5 ft. [3.8 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]
Operating rating:32.9 tons [29.9 metric tons]
Inventory rating:25.0 tons [22.7 metric tons]
Sufficiency rating:64.9
Recommended work:Widening of existing bridge with deck rehabilitation or replacement. [34]

Previous Inspections 

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
August 201664.9FairGoodSatisfactorySatisfactoryFO14400
August 201464.9FairGoodSatisfactoryGoodFO14400
August 201277.1FairVery GoodSatisfactoryGoodFO14400
November 201177.1FairVery GoodSatisfactoryVery GoodFO14400
November 200987.7FairVery GoodSatisfactoryVery GoodFO14400
November 200760.3PoorVery GoodPoorVery GoodSD14400
March 200588.2GoodExcellentVery GoodVery Good-14400
June 200388.2FairExcellentSatisfactoryVery Good-14400
March 200188.2FairExcellentSatisfactoryVery Good-14400
July 199988.2FairExcellentSatisfactoryVery Good-14400
May 199787.5FairExcellentSatisfactoryGood-20700
January 199777.3FairSatisfactoryFairSatisfactoryFO11300
October 199478.9FairSatisfactoryFairSatisfactoryFO11300
July 199278.9FairSatisfactoryFairSatisfactoryFO11300
July 199090.0FairSatisfactoryGoodGoodFO11300