I0020 over ST. LOUIS & SW RR


+32.51110, -93.74093
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:54.8 ft. [16.7 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: September 2015 

Status:Open, no restriction [A]
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:Meets minimum tolerable limits to be left in place as is [4]
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]
Operating rating:70.3 tons [63.9 metric tons]
Inventory rating:41.6 tons [37.8 metric tons]
Evaluation:Structurally deficient [1]
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:$3,057,000

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
September 201548.0Structurally deficientFairPoorFair86400
July 201448.0Structurally deficientFairPoorFair140400
August 201348.0Structurally deficientFairPoorFair134300
February 201348.0Structurally deficientFairPoorFair128300
March 201249.0Structurally deficientSatisfactoryPoorSatisfactory93200
February 201165.0Not deficientSatisfactoryFairSatisfactory104900
March 201065.0Not deficientSatisfactoryFairSatisfactory87400
January 200965.0Not deficientSatisfactoryFairSatisfactory84100
March 200865.0Not deficientGoodFairGood82500
February 200765.0Not deficientGoodFairGood81500
March 200665.0Not deficientGoodFairGood74000
February 200565.0Not deficientGoodFairGood70200
March 200465.0Not deficientGoodFairGood67800
February 200365.0Not deficientGoodFairGood60100
May 200165.0Not deficientGoodFairGood53497
April 200065.0Not deficientGoodFairGood53497
April 199965.0Not deficientGoodFairGood78172
March 199864.0Not deficientFairFairGood78172
April 199764.0Not deficientFairFairGood30515
June 199564.0Not deficientFairFairGood67792
June 199464.0Not deficientFairFairGood66268
April 199364.0Not deficientFairFairGood47582
March 199262.0Structurally deficientPoorFairGood47582