I 20 E TO I 55 N over OVER I 20 WB


+32.27599, -90.17659
32°16'34" N, 90°10'36" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I 20 E TO I 55 N over OVER I 20 WB
Structure number:110005506109310
Location:JCT I 55 & I 20
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:109.9 ft. [33.5 m]
Total length:1317.0 ft. [401.4 m]
Roadway width between curbs:40.0 ft. [12.2 m]
Deck width edge-to-edge:42.7 ft. [13.0 m]
Vertical clearance above deck:19.7 ft. [6.0 m]
Vertical clearance below bridge:16.4 ft. [5.0 m]
Owner:State Highway Agency [01]
Year built:1966
Year reconstructed:1998
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:17
Main spans material:Concrete continuous [2]
Main spans design:Box Beam or girders - Single or Spread [06]
Deck type:Concrete Cast-in-Place [1]

Latest Available Inspection: December 2016

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:54,500 [as of 2014]
Truck traffic:21% of total traffic
Deck condition:Fair [5 out of 9]
Superstructure condition:Fair [5 out of 9]
Substructure condition:Very Good [8 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck geometry appraisal:Better than present minimum criteria [7]
Underclearances appraisal:Equal to present minimum criteria [6]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:80.1

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
December 2016FairFairFairVery Good5450080.1
December 2014FairFairFairVery Good2100084.9
November 2012FairFairFairVery Good2200084.8
October 2010FairFairFairVery Good2200084.8
October 2008FairSatisfactoryGoodVery Good5400095.5
March 2007FairSatisfactoryGoodVery Good5050095.6
December 2004FairSatisfactoryGoodVery Good5100095.6
January 2003FairSatisfactoryGoodVery Good4450095.9
December 2000FairSatisfactoryGoodVery Good2040097.0
December 1998FairSatisfactoryGoodVery Good2040097.0
March 1997FairSatisfactoryGoodVery Good2040092.0
March 1995FairSatisfactoryGoodVery Good1859092.0
September 1991FairSatisfactoryGoodVery Good1690092.0
November 1989FairSatisfactoryGoodVery Good1536092.0

Element Data

Source: National Bridge Elements dataset, 2018 edition. This feature is experimental.
Reinforced Concrete Closed Web/Box Girderlinear ft.1,3161,138144340
Reinforced Concrete Top Flangesq. ft.52,677052,67700
Reinforced Concrete Columneach5251100
Reinforced Concrete Abutmentlinear ft.159159000
Reinforced Concrete Pier Caplinear ft.624624000
Pourable Jointlinear ft.44025700183
Elastomeric Bearingeach8400840
Movable Bearingeach2402400
Steel Protective Coatingsq. ft.2400024
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.2,6342,6191500