+30.60573, -91.39730
30°36'21" N, 91°23'50" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:LA0413 over CHENAL BAYOU
Structure number:613902270400371
Purpose:Carries highway over waterway
Route classification:Collector (Urban) [17]
Length of largest span:19.0 ft. [5.8 m]
Total length:191.0 ft. [58.2 m]
Roadway width between curbs:25.9 ft. [7.9 m]
Deck width edge-to-edge:27.6 ft. [8.4 m]
Owner:State Highway Agency [01]
Year built:1968
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:M 13.5 / H 15 [2]
Number of main spans:10
Main spans material:Wood or timber [7]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Wood or Timber [8]
Wearing surface:Bituminous [6]

Latest Available Inspection: December 2017

Good/Fair/Poor Condition:Poor
Status:Posted for load [P]
Average daily traffic:2,900 [as of 2016]
Truck traffic:9% of total traffic
Deck condition:Fair [5 out of 9]
Superstructure condition:Poor [4 out of 9]
Substructure condition:Poor [4 out of 9]
Structural appraisal:Meets minimum tolerable limits to be left in place as is [4]
Deck geometry appraisal:Basically intolerable requiring high priority of corrrective action [3]
Water adequacy appraisal:Equal to present minimum criteria [6]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:Bank protection is in need of minor repairs. River control devices and embankment protection have a little minor damage. Banks and/or channel have minor amounts of drift. [7]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:32.6
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$861,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
December 2017PoorFairPoorPoor290032.6
December 2015PoorFairPoorFair280026.3
December 2013PoorFairPoorFair280026.3
January 2011PoorFairPoorSatisfactory290034.2
January 2010PoorFairPoorSatisfactory290034.2
January 2009PoorFairPoorSatisfactory280036.1
January 2008FairFairFairGood270052.1
January 2007FairGoodFairGood270060.4
January 2005FairGoodSatisfactoryGood310071.4
January 2003GoodGoodGoodGood300071.5
January 2001GoodGoodGoodGood302971.5
January 1999GoodGoodGoodGood293171.5
January 1997GoodGoodVery GoodVery Good268572.6
January 1995GoodGoodVery GoodVery Good256361.9
January 1993FairSatisfactoryVery GoodVery Good205662.1
January 1991FairSatisfactoryVery GoodVery Good205662.1

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Timber Stringerlinear ft.3,3723,175010295
Timber Abutmentlinear ft.8800880
Timber Pileeach451316160
Timber Pier Caplinear ft.2521648800
Timber Decksq. ft.5,3205,2670521
Wearing Surfacessq. ft.5,0004,74002600
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.400400000
Steel Protective Coatingsq. ft.2,0002,000000