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


+29.89744, -90.39898
29°53'51" N, 90°23'56" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:I0310 over S.P. R.R. & LA-631
Structure number:024504503803667
Location:.50 MI N. OF US 90
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:110.9 ft. [33.8 m]
Total length:1534.2 ft. [467.6 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:25.9 ft. [7.9 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:20
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: July 2014 

Status:Open, no restriction [A]
Average daily traffic:4,160 [as of 2014]
Truck traffic:7% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Better than present minimum criteria [7]
Deck geometry appraisal:Better than present minimum criteria [7]
Underclearances appraisal:Superior to present desirable criteria [9]
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:93.0

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
July 201493.0Not deficientGoodGoodGood4160
August 201293.0Not deficientGoodGoodGood3520
August 201093.0Not deficientVery GoodSatisfactoryGood3460
August 200893.0Not deficientVery GoodSatisfactoryGood3120
August 200693.0Not deficientVery GoodSatisfactoryGood2850
April 200493.0Not deficientVery GoodSatisfactoryGood2740
March 200193.0Not deficientVery GoodVery GoodVery Good2992
November 199795.0Not deficientVery GoodVery GoodVery Good2992
September 199495.0Not deficientVery GoodVery GoodVery Good1700
September 199295.0Not deficientVery GoodVery GoodVery Good971
August 199095.0Not deficientVery GoodVery GoodVery Good971