+29.93777, -90.05401
29°56'16" N, 90°03'14" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Structure number:023602830802441
Location:US 90B OVER LA 428
Purpose:Carries highway over highway and waterway
Route classification:Principal Arterial - Interstate (Urban) [11]
Tolls:Yes [1]
Length of largest span:1576.2 ft. [480.4 m]
Total length:3019.2 ft. [920.2 m]
Roadway width between curbs:51.8 ft. [15.8 m]
Deck width edge-to-edge:51.8 ft. [15.8 m]
Vertical clearance above deck:4.9 ft. [1.5 m]
Vertical clearance below bridge:149.9 ft. [45.7 m]
Owner:State Highway Agency [01]
Year built:1957
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:3
Main spans material:Steel continuous [4]
Main spans design:Truss - Thru [10]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Bituminous [6]

Latest Available Inspection: November 2014 

Status:Open, no restriction [A]
Average daily traffic:98,640 [as of 2014]
Truck traffic:5% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Basically intolerable requiring high priority of replacement [2]
Underclearances appraisal:Meets minimum tolerable limits to be left in place as is [4]
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]
Pier/abutment protection:In place and functioning [2]
Scour condition:Countermeasures have been installed to mitigate an existing problem with scour. [7]
Operating rating:37.1 tons [33.7 metric tons]
Inventory rating:28.5 tons [25.9 metric tons]
Evaluation:Functionally obsolete [2]
Sufficiency rating:46.6
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$15,306,000

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
November 201446.6Functionally obsoleteGoodSatisfactoryGood98640
January 201352.0Functionally obsoleteGoodGoodGood90780
July 200852.0Functionally obsoleteVery GoodGoodVery Good69360
August 200652.0Functionally obsoleteVery GoodGoodVery Good65880
September 200452.0Functionally obsoleteVery GoodGoodVery Good64612
September 200252.0Functionally obsoleteVery GoodGoodVery Good64612
July 199852.0Functionally obsoleteVery GoodGoodVery Good65932
July 199350.0Functionally obsoleteExcellentVery GoodVery Good92397
July 19929.4Structurally deficientPoorVery GoodVery Good78636
199210.4Functionally obsolete---78636