I0310 over US 61/RR/SWAMP/LA 626


+30.00135, -90.29419
30°00'05" N, 90°17'39" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I0310 over US 61/RR/SWAMP/LA 626
Structure number:024504503600401
Location:0.41 M SOUTH OF I-10
Purpose:Carries highway over highway, waterway, and railroad
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:89.9 ft. [27.4 m]
Total length:25673.2 ft. [7824.8 m]
Roadway width between curbs:40.0 ft. [12.2 m]
Deck width edge-to-edge:43.0 ft. [13.1 m]
Vertical clearance above deck:16.7 ft. [5.1 m]
Vertical clearance below bridge:15.4 ft. [4.7 m]
Owner:State Highway Agency [01]
Year built:1992
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:467
Main spans material:Prestressed concrete [5]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]

Latest Available Inspection: October 2016

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:30,300 [as of 2015]
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Very Good [8 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Equal to present minimum criteria [6]
Underclearances appraisal:Equal to present minimum criteria [6]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Operating rating:53.9 tons [49.0 metric tons]
Inventory rating:31.9 tons [29.0 metric tons]
Sufficiency rating:93.1

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
October 201693.1FairSatisfactoryVery GoodSatisfactory-30300
October 201492.2FairSatisfactoryVery GoodSatisfactory-37080
October 201380.8FairSatisfactoryVery GoodFair-36000
November 201292.8FairSatisfactorySatisfactoryGood-31200
October 201181.4FairSatisfactoryFairGood-30660
November 200993.1GoodGoodGoodGood-28380
August 200793.2FairSatisfactoryGoodGood-26520
February 200593.4GoodGoodGoodGood-24600
January 200393.4GoodGoodGoodGood-25140
September 199996.7GoodGoodVery GoodGood-26068
October 199698.1GoodGoodVery GoodGood-20534
April 199498.0GoodGood---26704

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Steel Girder/Beamlinear ft.320320000
Prestressed Concrete Girder/Beamlinear ft.84,33784,337000
Reinforced Concrete Decksq. ft.665,1403,200661,94000
Reinforced Concrete Abutmentlinear ft.5050000
Prestressed Concrete Pileeach835682900
Reinforced Concrete Pileeach961961000
Reinforced Concrete Pier Caplinear ft.20,18010,9009,28000
Open Jointlinear ft.3,1003,100000
Assembly without Seal Jointlinear ft.1,7601,760000
Elastomeric Bearingeach6,9826,982000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.51,51051,510000
Reinforced Concrete Slabsq. ft.370,4000370,40000