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LA0408 over BLACKWATER BAYOU

Map

Coordinates:
+30.53572, -91.08110
30°32'09" N, 91°04'52" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:LA0408 over BLACKWATER BAYOU
Structure number:611702550203932
Location:3.5 M E of LA 67&LA 408
Purpose:Carries highway over waterway
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:49.9 ft. [15.2 m]
Total length:149.9 ft. [45.7 m]
Roadway width between curbs:34.1 ft. [10.4 m]
Deck width edge-to-edge:46.6 ft. [14.2 m]
Owner:State Highway Agency [01]
Year built:1984
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:3
Main spans material:Prestressed concrete [5]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: April 2016

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:10,920 [as of 2015]
Truck traffic:9% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Very Good [8 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:91.3

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
April 2016GoodGoodGoodVery Good1092091.3
April 2014GoodGoodGoodVery Good1092091.3
April 2012GoodGoodGoodVery Good1074091.4
March 2010GoodVery GoodVery GoodVery Good1158091.2
March 2008GoodGoodVery GoodVery Good1152091.2
March 2006GoodGoodVery GoodVery Good1164091.2
March 2004GoodGoodVery GoodVery Good1158091.2
March 2002GoodVery GoodVery GoodVery Good1050691.4
March 2000GoodVery GoodVery GoodVery Good1026191.4
March 1998GoodVery GoodVery GoodVery Good1026191.4
March 1996GoodVery GoodVery GoodVery Good1056991.4
March 1994GoodVery GoodVery GoodVery Good887291.5
March 1992GoodVery GoodVery GoodVery Good864391.6