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LA0408 over BLACKWATER BAYOU

Map

Coordinates:
+30.53541, -91.08150
30°32'07" N, 91°04'53" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:LA0408 over BLACKWATER BAYOU
Structure number:611702550203931
Location: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:151.9 ft. [46.3 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:1988
Historic significance:Historical significance is not determinable at this time [4]
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:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
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:92.4

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
April 2016GoodGoodGoodVery Good1092092.4
April 2014GoodGoodGoodVery Good1092092.4
April 2012GoodGoodGoodVery Good1074092.4
March 2010GoodVery GoodVery GoodVery Good1158092.3
March 2008GoodVery GoodVery GoodVery Good1152092.3
March 2006GoodVery GoodVery GoodVery Good1164092.2
March 2004GoodVery GoodVery GoodVery Good1158092.3
March 2002GoodVery GoodVery GoodVery Good1050692.4
March 2000GoodVery GoodVery GoodVery Good1026192.4
March 1998GoodVery GoodVery GoodVery Good1026192.4
March 1996GoodVery GoodVery GoodVery Good1056992.4
March 1994GoodVery GoodVery GoodVery Good887292.6
March 1992GoodVery GoodVery GoodVery Good864392.6