I0310 over RAMP "A"


+29.93324, -90.37941
29°55'60" N, 90°22'46" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I0310 over RAMP "A"
Structure number:024504503800207
Location:.2 MI SOUTH OF LA 18
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:94.2 ft. [28.7 m]
Total length:1472.2 ft. [448.7 m]
Roadway width between curbs:24.9 ft. [7.6 m]
Deck width edge-to-edge:28.2 ft. [8.6 m]
Vertical clearance above deck:23.3 ft. [7.1 m]
Vertical clearance below bridge:21.0 ft. [6.4 m]
Owner:State Highway Agency [01]
Year built:1979
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:18
Main spans material:Prestressed concrete continuous [6]
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:4,150 [as of 2015]
Truck traffic:10% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Fair [5 out of 9]
Substructure condition:Fair [5 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:Superior to present desirable criteria [9]
Roadway alignment appraisal:Better than present minimum criteria [7]
Scour condition:Bridge not over waterway. [N]
Operating rating:64.9 tons [59.0 metric tons]
Inventory rating:37.7 tons [34.3 metric tons]
Sufficiency rating:86.6

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
October 201686.6FairGoodFairFair-4150
October 201586.6FairGoodFairFair-4150
October 201486.6FairGoodFairFair-4030
October 201386.6FairGoodFairFair-3900
November 201286.6FairGoodFairGood-3480
October 201170.5PoorGoodPoorGoodSD3450
January 201186.6FairGoodFairGood-3370
October 200986.7FairGoodFairGood-3100
July 200886.7FairGoodFairGood-3070
August 200786.7FairSatisfactoryFairGood-3000
May 200686.7FairSatisfactoryFairGood-2920
December 200486.7FairSatisfactoryFairGood-2780
August 200297.7FairSatisfactorySatisfactoryGood-2820
July 199899.7GoodGoodGoodGood-2771
May 199599.8GoodGoodGoodGood-2067
June 199399.9GoodGoodGoodGood-971
March 199199.9GoodGoodGoodGood-971

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Prestressed Concrete Girder/Beamlinear ft.5,88804,9079810
Reinforced Concrete Decksq. ft.41,216041,21600
Reinforced Concrete Abutmentlinear ft.4545000
Reinforced Concrete Pileeach1717000
Reinforced Concrete Pier Caplinear ft.476004760
Pourable Jointlinear ft.2626000
Compression Jointlinear ft.2828000
Assembly with Sealeach112970150
Elastomeric Bearingeach144141030
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.2,9442,944000