LA0582 over LYON BAYOU


+32.78364, -91.40810
32°47'01" N, 91°24'29" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:LA0582 over LYON BAYOU
Structure number:056203330200401
Location:0.4 MI E of LA 17
Purpose:Carries highway over waterway
Route classification:Minor Collector (Rural) [08]
Length of largest span:20.0 ft. [6.1 m]
Total length:80.1 ft. [24.4 m]
Roadway width between curbs:29.9 ft. [9.1 m]
Deck width edge-to-edge:33.1 ft. [10.1 m]
Owner:State Highway Agency [01]
Year built:1983
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:4
Main spans material:Concrete [1]
Main spans design:Slab [01]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: January 2017

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:960 [as of 2015]
Deck condition:Good [7 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Better than present minimum criteria [7]
Deck geometry appraisal:Equal to present minimum criteria [6]
Water adequacy appraisal:Better than present minimum criteria [7]
Roadway alignment appraisal:Better than present minimum criteria [7]
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]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:96.0

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
January 2017GoodGoodGoodGood96096.0
January 2015GoodGoodGoodGood94096.0
February 2013GoodGoodGoodGood93096.0
February 2011GoodGoodGoodGood91096.0
February 2009GoodGoodGoodGood83096.1
February 2007GoodGoodGoodGood80096.1
July 2004GoodGoodGoodGood80096.1
April 2002GoodGoodGoodGood86096.0
April 2000GoodGoodGoodGood92196.0
January 1998GoodGoodGoodGood92196.0
December 1995GoodGoodGoodGood104495.0
October 1993GoodGoodGoodGood74899.8
November 1991GoodGoodVery GoodVery Good60699.9

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Reinforced Concrete Abutmentlinear ft.7878000
Prestressed Concrete Pileeach1201200
Reinforced Concrete Pier Caplinear ft.102102000
Pourable Jointlinear ft.150015000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.160160000
Reinforced Concrete Slabsq. ft.2,4002,3208000