I0020 over ST. LOUIS & SW RR


+32.51121, -93.74070
32°30'40" N, 93°44'27" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I0020 over ST. LOUIS & SW RR
Structure number:040904510119331
Location:.2 MI EAST OF LA 1
Purpose:Carries highway overpass over highway and railroad
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:129.9 ft. [39.6 m]
Total length:365.2 ft. [111.3 m]
Roadway width between curbs:79.4 ft. [24.2 m]
Deck width edge-to-edge:89.2 ft. [27.2 m]
Vertical clearance below bridge:52.5 ft. [16.0 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:3
Main spans material:Steel continuous [4]
Main spans design:Girder and floorbeam system [03]
Deck type:Concrete Cast-in-Place [1]

Latest Available Inspection: July 2017

Good/Fair/Poor Condition:Poor
Status:Posted for load [P]
Average daily traffic:86,400 [as of 2015]
Truck traffic:29% of total traffic
Deck condition:Fair [5 out of 9]
Superstructure condition:Poor [4 out of 9]
Substructure condition:Fair [5 out of 9]
Structural appraisal:Basically intolerable requiring high priority of replacement [2]
Deck geometry appraisal:Meets minimum tolerable limits to be left in place as is [4]
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:27.8
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$3,057,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
July 2017PoorFairPoorFair8640027.8
September 2015PoorFairPoorFair8640048.0
July 2014PoorFairPoorFair14040048.0
August 2013PoorFairPoorFair13430048.0
February 2013PoorFairPoorFair12830048.0
March 2012PoorSatisfactoryPoorSatisfactory9320049.0
February 2011FairSatisfactoryFairSatisfactory10490065.0
March 2010FairSatisfactoryFairSatisfactory8740065.0
January 2009FairSatisfactoryFairSatisfactory8410065.0
March 2008FairGoodFairGood8250065.0
February 2007FairGoodFairGood8150065.0
March 2006FairGoodFairGood7400065.0
February 2005FairGoodFairGood7020065.0
March 2004FairGoodFairGood6780065.0
February 2003FairGoodFairGood6010065.0
May 2001FairGoodFairGood5349765.0
April 2000FairGoodFairGood5349765.0
April 1999FairGoodFairGood7817265.0
March 1998FairFairFairGood7817264.0
April 1997FairFairFairGood3051564.0
June 1995FairFairFairGood6779264.0
June 1994FairFairFairGood6626864.0
April 1993FairFairFairGood4758264.0
March 1992PoorPoorFairGood4758262.0

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Girder/Beamlinear ft.3,77003,760100
Steel Protective Coatingsq. ft.63,415063,41500
Reinforced Concrete Decksq. ft.15,695015,68960
Steel Pin or Pin & Hangar Assemblyeach1401040
Steel Protective Coatingsq. ft.945945000
Reinforced Concrete Columneach2002000
Reinforced Concrete Pier Caplinear ft.240024000
Assembly without Seal Jointlinear ft.168168000
Movable Bearingeach1501500
Steel Protective Coatingsq. ft.112011200
Fixed Bearingeach3903900
Steel Protective Coatingsq. ft.271027100
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.1,09501,09500