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LA0427 over DAWSON CR.BRG.(ACADIAN)

Map

Coordinates:
+30.42324, -91.15140
30°25'24" N, 91°09'05" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:LA0427 over DAWSON CR.BRG.(ACADIAN)
Structure number:611702580203371
Location:0.1 M S of I-10
Purpose:Carries highway over waterway
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:20.0 ft. [6.1 m]
Total length:100.1 ft. [30.5 m]
Roadway width between curbs:63.0 ft. [19.2 m]
Deck width edge-to-edge:71.9 ft. [21.9 m]
Skew angle:10°
Owner:State Highway Agency [01]
Year built:1964
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: November 2016

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:23,500 [as of 2015]
Truck traffic:6% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
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 is scour critical; bridge foundations determined to be unstable. [3]
Sufficiency rating:85.4

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
November 2016FairSatisfactorySatisfactorySatisfactory2350085.4
November 2014FairSatisfactorySatisfactorySatisfactory2760087.9
December 2010FairSatisfactorySatisfactoryGood3070087.6
December 2008GoodGood-Good3020087.6
November 2006GoodGoodVery GoodGood2830084.8
November 2004GoodVery GoodVery GoodGood2950084.7
November 2002GoodVery GoodVery GoodGood2830084.8
November 2000GoodVery GoodVery GoodGood2213685.4
November 1998GoodVery GoodVery GoodGood2386985.3
November 1996GoodVery GoodVery GoodGood2386985.3
November 1994GoodVery GoodVery GoodGood2603285.6
November 1992GoodVery GoodVery GoodGood1191186.8
November 1990GoodVery GoodVery GoodGood1191186.8

Element Data

Source: National Bridge Elements dataset, 2018 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Substructure
Reinforced Concrete Abutmentlinear ft.1801390410
Reinforced Concrete Pileeach4544010
Reinforced Concrete Pier Caplinear ft.282278040
Joints
Pourable Jointlinear ft.417417000
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.100010000
Steel Protective Coatingsq. ft.50025000250
Reinforced Concrete Bridge Raillinear ft.100100000
Deck
Reinforced Concrete Slabsq. ft.7,00006,8231770