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LA3094 over TWELVE MILE BAYOU

Map 

Coordinates:
+32.52633, -93.77992
32°31'35" N, 93°46'48" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts 

Name:LA3094 over TWELVE MILE BAYOU
Structure number:040900250900911
Location:.9 MI NORTH OF LA 173
Purpose:Carries highway over waterway
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:75.1 ft. [22.9 m]
Total length:571.9 ft. [174.3 m]
Roadway width between curbs:57.7 ft. [17.6 m]
Deck width edge-to-edge:68.6 ft. [20.9 m]
Skew angle:30°
Owner:State Highway Agency [01]
Year built:1968
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Main span material:Steel [3]
Main span design:Girder and floorbeam system [03]
Deck type:Concrete Cast-in-Place [1]

Latest Available Inspection: June 2015 

Status:Open, no restriction [A]
Average daily traffic:11,100 [as of 2015]
Truck traffic:3% of total traffic
Deck condition:Fair [5 out of 9]
Superstructure condition:Poor [4 out of 9]
Substructure condition:Fair [5 out of 9]
Structural appraisal:Meets minimum tolerable limits to be left in place as is [4]
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:Better than present minimum criteria [7]
Channel protection:Bank protection is being eroded. River control devices and/or embankment have major damage. Trees and rush restrict the channel. [5]
Scour condition:Countermeasures have been installed to mitigate an existing problem with scour. [7]
Operating rating:42.5 tons [38.6 metric tons]
Inventory rating:32.8 tons [29.8 metric tons]
Evaluation:Structurally deficient [1]
Sufficiency rating:58.2
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$3,375,000

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
June 201558.2Structurally deficientFairPoorFair11100
June 201458.8Structurally deficientFairPoorFair10800
July 201358.7Structurally deficientFairPoorFair11000
February 201358.6Structurally deficientFairPoorFair11200
February 201261.5Structurally deficientSatisfactoryPoorSatisfactory14400
February 201161.6Structurally deficientSatisfactoryPoorSatisfactory14200
February 201061.6Structurally deficientSatisfactoryPoorSatisfactory14000
February 200962.1Structurally deficientSatisfactoryPoorSatisfactory12700
January 200862.1Structurally deficientSatisfactoryPoorSatisfactory12700
February 200762.2Structurally deficientSatisfactoryPoorSatisfactory12600
March 200662.4Structurally deficientSatisfactoryPoorSatisfactory12100
January 200562.4Structurally deficientSatisfactoryPoorSatisfactory12100
February 200462.3Structurally deficientSatisfactoryPoorSatisfactory12200
February 200361.9Structurally deficientSatisfactoryPoorSatisfactory13400
May 200161.2Structurally deficientSatisfactoryPoorSatisfactory15214
April 200061.2Structurally deficientSatisfactoryPoorSatisfactory15214
February 200063.1Structurally deficientSatisfactoryPoorSatisfactory10197
April 199963.1Structurally deficientSatisfactoryPoorSatisfactory10197
January 199863.1Structurally deficientSatisfactoryPoorSatisfactory10197
February 199762.3Structurally deficientSatisfactoryPoorSatisfactory12304
February 199662.5Structurally deficientSatisfactoryPoorSatisfactory12182
January 199562.6Structurally deficientGoodPoorSatisfactory12061
January 199463.3Structurally deficientGoodPoorSatisfactory10074
January 199380.2Not deficientGoodFairSatisfactory10074
February 199279.2Not deficientGoodFairSatisfactory10074