I0310 over S.P. R.R. & LA 631


+29.89678, -90.40052
29°53'48" N, 90°24'02" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:I0310 over S.P. R.R. & LA 631
Structure number:024504503803756
Location:.5 MI NORTH OF US 90
Purpose:Carries highway over highway and railroad
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:111.9 ft. [34.1 m]
Total length:1319.0 ft. [402.0 m]
Roadway width between curbs:24.9 ft. [7.6 m]
Deck width edge-to-edge:27.9 ft. [8.5 m]
Vertical clearance below bridge:23.0 ft. [7.0 m]
Owner:State Highway Agency [01]
Year built:1986
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:17
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: November 2015 

Status:Open, no restriction [A]
Average daily traffic:4,290 [as of 2015]
Truck traffic:7% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Very Good [8 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Better than present minimum criteria [7]
Underclearances appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Operating rating:63.4 tons [57.6 metric tons]
Inventory rating:37.6 tons [34.2 metric tons]
Sufficiency rating:98.0

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
November 201598.0Not deficientSatisfactorySatisfactoryVery Good4290
December 201487.0Not deficientSatisfactoryFairVery Good4160
December 201387.0Not deficientSatisfactoryFairVery Good4030
December 201287.0Not deficientSatisfactoryFairVery Good3520
December 201187.0Not deficientSatisfactoryFairVery Good3510
November 201087.0Not deficientVery GoodFairVery Good3460
December 200971.0Structurally deficientVery GoodPoorVery Good3120
November 200869.0Structurally deficientVery GoodPoorVery Good3080
November 200771.0Structurally deficientVery GoodPoorVery Good3010
May 200671.0Structurally deficientVery GoodPoorVery Good2850
April 200471.0Structurally deficientVery GoodPoorVery Good2740
March 200171.0Structurally deficientVery GoodPoorVery Good2992
November 1997100.0Not deficientVery GoodVery GoodVery Good2992
November 1994100.0Not deficientVery GoodVery GoodVery Good1700
August 1992100.0Not deficientVery GoodVery GoodVery Good971
August 1990100.0Not deficientVery GoodVery GoodVery Good971