LA0408 over BAYOU


+30.52126, -91.15940
30°31'17" N, 91°09'34" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:LA0408 over BAYOU
Structure number:611702550101601
Location:0.1 M E of I-110&LA 408
Purpose:Carries highway over waterway
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:29.9 ft. [9.1 m]
Total length:117.1 ft. [35.7 m]
Roadway width between curbs:52.2 ft. [15.9 m]
Deck width edge-to-edge:84.3 ft. [25.7 m]
Skew angle:45°
Owner:State Highway Agency [01]
Year built:1976
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:5
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: September 2016

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:13,800 [as of 2015]
Truck traffic:8% of total traffic
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: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: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:76.8

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
September 2016GoodGoodGoodGood1380076.8
September 2014GoodGoodGoodGood1470076.3
October 2012GoodGoodGoodGood2020074.3
November 2010GoodGoodGoodVery Good2400072.9
November 2008GoodGood-Very Good2360073.1
November 2006GoodGoodVery GoodVery Good2490069.6
November 2004GoodGoodVery GoodVery Good2210070.6
November 2002GoodGoodVery GoodVery Good2130070.9
November 2000GoodGoodVery GoodVery Good1774772.2
November 1998GoodVery GoodVery GoodVery Good1662372.6
November 1996GoodVery GoodVery GoodVery Good1662374.6
November 1994GoodVery GoodVery GoodVery Good1727073.9
November 1992GoodVery GoodVery GoodVery Good2024372.8
November 1990GoodVery GoodVery GoodVery Good2024372.8

Element Data

Source: National Bridge Elements dataset, 2018 edition. This feature is experimental.
Reinforced Concrete Abutmentlinear ft.253253000
Reinforced Concrete Pileeach3636000
Reinforced Concrete Pier Caplinear ft.421421000
Pourable Jointlinear ft.634634000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.236236000
Reinforced Concrete Slabsq. ft.7,6407,640000