I0310 over I-310 OVER LA 3127


+29.91254, -90.40836
29°54'45" N, 90°24'30" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I0310 over I-310 OVER LA 3127
Structure number:024504503802411
Location:1.57 MI. N. OF US 90
Purpose:Carries highway over highway and waterway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:124.0 ft. [37.8 m]
Total length:2523.1 ft. [769.0 m]
Roadway width between curbs:40.0 ft. [12.2 m]
Deck width edge-to-edge:42.7 ft. [13.0 m]
Vertical clearance below bridge:17.7 ft. [5.4 m]
Skew angle:59°
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:28
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: May 2016

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:42,900 [as of 2015]
Truck traffic:7% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Very Good [8 out of 9]
Substructure condition:Very Good [8 out of 9]
Structural appraisal:Better than present minimum criteria [7]
Deck geometry appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Underclearances appraisal:Equal to present minimum criteria [6]
Water adequacy appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:Banks are protected or well vegetated. River control devices such as spur dikes and embankment protection are not required or are in a stable condition. [8]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Operating rating:55.9 tons [50.8 metric tons]
Inventory rating:33.9 tons [30.8 metric tons]
Sufficiency rating:91.3

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
May 201691.3FairSatisfactoryVery GoodVery Good-42900
May 201491.2FairSatisfactoryGoodGood-41600
June 201291.2GoodGoodGoodGood-35200
July 201091.2FairVery GoodSatisfactoryVery Good-34600
August 200891.2FairVery GoodSatisfactoryVery Good-31200
August 200780.2FairVery GoodFairVery Good-30100
May 200680.2FairVery GoodFairVery Good-28500
January 200580.2FairVery GoodFairVery Good-27400
January 200392.0GoodVery GoodVery GoodVery Good-30100
February 200192.0GoodVery GoodVery GoodVery Good-29928
October 199792.0GoodVery GoodVery GoodVery Good-29928
November 199492.0GoodVery GoodVery GoodVery Good-17000
September 199292.0GoodVery GoodVery GoodVery Good-9712
August 199092.0GoodVery GoodVery GoodVery Good-9712