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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 2014 

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:Good [7 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]
Evaluation:Functionally obsolete [2]
Sufficiency rating:64.9
Recommended work:Widening of existing bridge with deck rehabilitation or replacement. [34]

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
August 201464.9Functionally obsoleteGoodSatisfactoryGood14400
August 201277.1Functionally obsoleteVery GoodSatisfactoryGood14400
November 201177.1Functionally obsoleteVery GoodSatisfactoryVery Good14400
November 200987.7Functionally obsoleteVery GoodSatisfactoryVery Good14400
November 200760.3Structurally deficientVery GoodPoorVery Good14400
March 200588.2Not deficientExcellentVery GoodVery Good14400
June 200388.2Not deficientExcellentSatisfactoryVery Good14400
March 200188.2Not deficientExcellentSatisfactoryVery Good14400
July 199988.2Not deficientExcellentSatisfactoryVery Good14400
20000.0Not applicable---1200
May 199787.5Not deficientExcellentSatisfactoryGood20700
January 199777.3Functionally obsoleteSatisfactoryFairSatisfactory11300
October 199478.9Functionally obsoleteSatisfactoryFairSatisfactory11300
July 199278.9Functionally obsoleteSatisfactoryFairSatisfactory11300
July 199090.0Functionally obsoleteSatisfactoryGoodGood11300