+30.57533, -91.16710
30°34'31" N, 91°10'02" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:LA3006 over CYPRESS BAYOU
Structure number:611708173300201
Location:2.8 M N of LA 19&I -110
Purpose:Carries highway over waterway
Route classification:Collector (Urban) [17]
Length of largest span:20.0 ft. [6.1 m]
Total length:80.1 ft. [24.4 m]
Roadway width between curbs:24.3 ft. [7.4 m]
Deck width edge-to-edge:29.5 ft. [9.0 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:M 13.5 / H 15 [2]
Number of main spans:4
Main spans material:Concrete [1]
Main spans design:Slab [01]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Bituminous [6]

Latest Available Inspection: September 2017

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:7,900 [as of 2016]
Truck traffic:4% 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:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck geometry appraisal:Basically intolerable requiring high priority of replacement [2]
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]
Pier/abutment protection:Navigation protection not required [1]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:66.8
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$412,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
September 2017GoodGoodGoodGood790066.8
September 2015GoodGoodGoodGood790066.5
October 2013GoodGoodGoodGood790066.5
December 2011GoodGoodGoodGood780067.6
January 2010GoodGoodGoodGood1010068.1
January 2008GoodGoodVery GoodVery Good1090067.9
January 2006GoodGoodVery GoodVery Good1110067.9
January 2004GoodGoodVery GoodVery Good1080067.9
January 2002GoodGoodVery GoodVery Good1041368.0
January 2000GoodGoodVery GoodVery Good947968.2
January 1998GoodGoodVery GoodVery Good947969.2
January 1996GoodGoodVery GoodVery Good958969.0
January 1994GoodGoodVery GoodVery Good694269.6
January 1992GoodGoodVery GoodVery Good817269.4

Element Data

Source: National Bridge Elements dataset, 2018 edition. This feature is experimental.
Reinforced Concrete Abutmentlinear ft.7668080
Reinforced Concrete Pileeach128400
Reinforced Concrete Pier Caplinear ft.7874040
Pourable Jointlinear ft.120000120
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.160160000
Reinforced Concrete Slabsq. ft.1,9201,8400800
Wearing Surfacessq. ft.1,9201,920000