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LA0408 over BLACKWATER BAYOU

Map 

Coordinates:
+30.53564, -91.08139
30°32'08" N, 91°04'53" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts 

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 2014 

Status:Open, no restriction [A]
Average daily traffic:10,920 [as of 2014]
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]
Operating rating:61.4 tons [55.8 metric tons]
Inventory rating:36.6 tons [33.3 metric tons]
Sufficiency rating:92.4

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
April 201492.4Not deficientGoodGoodVery Good10920
April 201292.4Not deficientGoodGoodVery Good10740
March 201092.3Not deficientVery GoodVery GoodVery Good11580
March 200892.3Not deficientVery GoodVery GoodVery Good11520
March 200692.2Not deficientVery GoodVery GoodVery Good11640
March 200492.3Not deficientVery GoodVery GoodVery Good11580
March 200292.4Not deficientVery GoodVery GoodVery Good10506
March 200092.4Not deficientVery GoodVery GoodVery Good10261
March 199892.4Not deficientVery GoodVery GoodVery Good10261
March 199692.4Not deficientVery GoodVery GoodVery Good10569
March 199492.6Not deficientVery GoodVery GoodVery Good8872
March 199292.6Not deficientVery GoodVery GoodVery Good8643