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

Good/Fair/Poor Condition:Fair
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. RatingConditionDeckSuperstructureSubstructureSD/FOADT
November 201598.0FairSatisfactorySatisfactoryVery Good-4290
December 201487.0FairSatisfactoryFairVery Good-4160
December 201387.0FairSatisfactoryFairVery Good-4030
December 201287.0FairSatisfactoryFairVery Good-3520
December 201187.0FairSatisfactoryFairVery Good-3510
November 201087.0FairVery GoodFairVery Good-3460
December 200971.0PoorVery GoodPoorVery GoodSD3120
November 200869.0PoorVery GoodPoorVery GoodSD3080
November 200771.0PoorVery GoodPoorVery GoodSD3010
May 200671.0PoorVery GoodPoorVery GoodSD2850
April 200471.0PoorVery GoodPoorVery GoodSD2740
March 200171.0PoorVery GoodPoorVery GoodSD2992
November 1997100.0GoodVery GoodVery GoodVery Good-2992
November 1994100.0GoodVery GoodVery GoodVery Good-1700
August 1992100.0GoodVery GoodVery GoodVery Good-971
August 1990100.0GoodVery GoodVery GoodVery Good-971

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Prestressed Concrete Girder/Beamlinear ft.4,8304,830000
Reinforced Concrete Decksq. ft.30,420030,42000
Reinforced Concrete Abutmentlinear ft.3535000
Prestressed Concrete Pileeach9090000
Reinforced Concrete Pileeach22000
Reinforced Concrete Pier Caplinear ft.57213044200
Pourable Jointlinear ft.5252000
Compression Jointlinear ft.1825745080
Elastomeric Bearingeach146144020
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.2,6402,640000
Reinforced Concrete Slabsq. ft.3,90003,90000