+30.94066, -91.72180
30°56'26" N, 91°43'18" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:LA0001 over BAYOU FISHER
Structure number:613900520401271
Location:0.5 M N of Lettsworth
Purpose:Carries highway over waterway
Route classification:Minor Arterial (Rural) [06]
Length of largest span:4.9 ft. [1.5 m]
Total length:27.9 ft. [8.5 m]
Roadway width between curbs:36.7 ft. [11.2 m]
Deck width edge-to-edge:65.6 ft. [20.0 m]
Owner:State Highway Agency [01]
Year built:1936
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:5
Main spans material:Concrete [1]
Main spans design:Culvert [19]
Deck type:Concrete Cast-in-Place [1]

Latest Available Inspection: April 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:470 [as of 2016]
Truck traffic:18% of total traffic
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Better than present minimum criteria [7]
Water adequacy appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:Bank is beginning to slump. River control devices and embankment protection have widespread minor damage. There is minor stream bed movement evident. Debris is restricting the channel slightly. [6]
Culvert condition:Deterioration or initial disintegration, minor chloride contamination, cracking with some leaching, or spalls on concrete or masonry walls and slabs. Local minor scouring at curtain walls, wingwalls or pipes. Metal culverts have a smooth curvature, non-symmetrical shape, significant corrosion or moderate pitting. [6]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:99.7

Previous Inspections

DateConditionCulvert ConditionADTSuff. Rating
April 2018Fair6 out of 1047099.7
April 2016Fair6 out of 1063099.6
April 2014Fair6 out of 10300097.2
June 2012Fair6 out of 10280097.3
April 2010Fair6 out of 10300095.2
April 2008Fair6 out of 10300094.2
April 2006Fair6 out of 10320094.0
April 2004Good7 out of 10360093.8
April 2002Good7 out of 10340093.9
April 2000Good7 out of 10387793.6
April 1998Good7 out of 10299794.2
April 1996Good8 out of 10308794.1
April 1994Good8 out of 10238394.6
April 1992Good8 out of 10221594.7

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Reinforced Concrete Culvertlinear ft.34023510320