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 2015 

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:72.3 tons [65.7 metric tons]
Inventory rating:43.6 tons [39.6 metric tons]
Sufficiency rating:86.6

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
October 201586.6Not deficientGoodFairFair4150
October 201486.6Not deficientGoodFairFair4030
October 201386.6Not deficientGoodFairFair3900
November 201286.6Not deficientGoodFairGood3480
October 201170.5Structurally deficientGoodPoorGood3450
January 201186.6Not deficientGoodFairGood3370
October 200986.7Not deficientGoodFairGood3100
July 200886.7Not deficientGoodFairGood3070
August 200786.7Not deficientSatisfactoryFairGood3000
May 200686.7Not deficientSatisfactoryFairGood2920
December 200486.7Not deficientSatisfactoryFairGood2780
August 200297.7Not deficientSatisfactorySatisfactoryGood2820
July 199899.7Not deficientGoodGoodGood2771
May 199599.8Not deficientGoodGoodGood2067
June 199399.9Not deficientGoodGoodGood971
March 199199.9Not deficientGoodGoodGood971