I0020 over MARSHALL ST/LA 1/RRS.


+32.50769, -93.74496
32°30'28" N, 93°44'42" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I0020 over MARSHALL ST/LA 1/RRS.
Structure number:040904510118981
Location:I-20 OVER LA 1
Purpose:Carries highway overpass over highway and railroad
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:127.0 ft. [38.7 m]
Total length:1821.9 ft. [555.3 m]
Roadway width between curbs:28.2 ft. [8.6 m]
Deck width edge-to-edge:36.1 ft. [11.0 m]
Vertical clearance below bridge:16.4 ft. [5.0 m]
Owner:State Highway Agency [01]
Year built:1965
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:Steel continuous [4]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]

Latest Available Inspection: July 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:57,720 [as of 2015]
Truck traffic:29% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Fair [5 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:Basically intolerable requiring high priority of corrrective action [3]
Underclearances appraisal:Meets minimum tolerable limits to be left in place as is [4]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:48.0
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$7,105,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
July 2017FairSatisfactoryFairSatisfactory5772048.0
February 2016FairSatisfactoryFairSatisfactory5772046.0
February 2015FairSatisfactoryFairSatisfactory7812046.0
February 2014FairSatisfactoryFairSatisfactory7530046.0
February 2013FairSatisfactoryFairSatisfactory7248046.0
February 2012FairSatisfactoryFairSatisfactory6282046.0
February 2011FairSatisfactoryFairSatisfactory6282046.0
March 2010FairSatisfactoryFairSatisfactory6168046.0
January 2009FairSatisfactoryFairSatisfactory5844046.0
February 2008FairGoodFairGood5676046.0
February 2007FairVery GoodFairGood5646046.0
March 2006FairVery GoodFairGood5520046.0
February 2005FairVery GoodFairGood5190046.0
March 2004FairVery GoodFairGood4848046.0
February 2003FairVery GoodFairGood4656045.7
May 2001FairVery GoodFairGood4860145.7
April 2000FairSatisfactoryFairGood4860145.7
April 1999FairSatisfactoryFairGood4860145.7
March 1998FairSatisfactoryFairGood4860145.7
January 1997FairSatisfactoryFairGood1877045.7
June 1995FairSatisfactoryFairGood3518246.0
June 1994FairSatisfactoryFairGood3092546.0
May 1993FairFairFairGood2307445.0
April 1993FairFairFairGood2921345.0
March 1992PoorPoorFairGood2921348.0

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Girder/Beamlinear ft.9,76209,76020
Steel Protective Coatingsq. ft.406,0990406,09900
Reinforced Concrete Decksq. ft.55,28547,2507,980550
Steel Pin or Pin & Hangar Assemblyeach2602600
Steel Protective Coatingsq. ft.150015000
Reinforced Concrete Columneach5251100
Reinforced Concrete Abutmentlinear ft.8175420
Reinforced Concrete Pier Caplinear ft.582582000
Assembly without Seal Jointlinear ft.222222000
Movable Bearingeach4603880
Steel Protective Coatingsq. ft.228228000
Fixed Bearingeach5405400
Steel Protective Coatingsq. ft.268268000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.3,6443,644000