I0310 over LA 18 & M. P. RR


+29.93560, -90.37819
29°56'08" N, 90°22'41" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I0310 over LA 18 & M. P. RR
Structure number:024504503800001
Purpose:Carries highway over highway and railroad
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:200.1 ft. [61.0 m]
Total length:1900.0 ft. [579.1 m]
Roadway width between curbs:76.1 ft. [23.2 m]
Deck width edge-to-edge:87.3 ft. [26.6 m]
Vertical clearance below bridge:92.2 ft. [28.1 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:14
Main spans material:Steel continuous [4]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]

Latest Available Inspection: October 2016

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:41,500 [as of 2015]
Truck traffic:10% of total traffic
Deck condition:Good [7 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:Superior to present desirable criteria [9]
Underclearances appraisal:Superior to present desirable criteria [9]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Pier/abutment protection:Navigation protection not required [1]
Scour condition:Bridge not over waterway. [N]
Operating rating:56.9 tons [51.7 metric tons]
Inventory rating:33.9 tons [30.8 metric tons]
Sufficiency rating:74.3

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
October 201674.3FairGoodSatisfactoryVery Good-41500
October 201474.2FairGoodSatisfactoryVery Good-40300
December 201274.2FairGoodSatisfactoryVery Good-34800
January 201174.2GoodGoodGoodVery Good-33700
July 200874.2GoodGoodGoodVery Good-31000
May 200674.2GoodGoodGoodVery Good-29200
October 200374.2GoodVery GoodGoodVery Good-29200
March 200175.0FairSatisfactoryGoodVery Good-27716
September 199775.0FairSatisfactoryGoodVery Good-27716
May 198675.0GoodGoodGoodGood-9712

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Steel Girder/Beamlinear ft.54,59554,595000
Prestressed Concrete Girder/Beamlinear ft.9,1209,120000
Reinforced Concrete Decksq. ft.184,560184,560000
Reinforced Concrete Pileeach3737000
Reinforced Concrete Pier Caplinear ft.1,20956964000
Compression Jointlinear ft.8000080
Assembly with Sealeach295295000
Elastomeric Bearingeach116116000
Movable Bearingeach5304490
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.7,5727,572000