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LA3094 over TWELVE MILE BAYOU

Map

Coordinates:
+32.52606, -93.78000
32°31'34" N, 93°46'48" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
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 2017

Good/Fair/Poor Condition:Poor
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]
Pier/abutment protection:Navigation protection not required [1]
Scour condition:Countermeasures have been installed to mitigate an existing problem with scour. [7]
Sufficiency rating:60.2
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

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
June 2017PoorFairPoorFair1110060.2
June 2015PoorFairPoorFair1110058.2
June 2014PoorFairPoorFair1080058.8
July 2013PoorFairPoorFair1100058.7
February 2013PoorFairPoorFair1120058.6
February 2012PoorSatisfactoryPoorSatisfactory1440061.5
February 2011PoorSatisfactoryPoorSatisfactory1420061.6
February 2010PoorSatisfactoryPoorSatisfactory1400061.6
February 2009PoorSatisfactoryPoorSatisfactory1270062.1
January 2008PoorSatisfactoryPoorSatisfactory1270062.1
February 2007PoorSatisfactoryPoorSatisfactory1260062.2
March 2006PoorSatisfactoryPoorSatisfactory1210062.4
January 2005PoorSatisfactoryPoorSatisfactory1210062.4
February 2004PoorSatisfactoryPoorSatisfactory1220062.3
February 2003PoorSatisfactoryPoorSatisfactory1340061.9
May 2001PoorSatisfactoryPoorSatisfactory1521461.2
April 2000PoorSatisfactoryPoorSatisfactory1521461.2
February 2000PoorSatisfactoryPoorSatisfactory1019763.1
April 1999PoorSatisfactoryPoorSatisfactory1019763.1
January 1998PoorSatisfactoryPoorSatisfactory1019763.1
February 1997PoorSatisfactoryPoorSatisfactory1230462.3
February 1996PoorSatisfactoryPoorSatisfactory1218262.5
January 1995PoorGoodPoorSatisfactory1206162.6
January 1994PoorGoodPoorSatisfactory1007463.3
January 1993FairGoodFairSatisfactory1007480.2
February 1992FairGoodFairSatisfactory1007479.2

Element Data

Source: National Bridge Elements dataset, 2018 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Steel Girder/Beamlinear ft.750750000
Steel Protective Coatingsq. ft.7,81307,81300
Prestressed Concrete Girder/Beamlinear ft.4,4554,3659000
Deck
Reinforced Concrete Decksq. ft.36,8557,98428,860110
Substructure
Reinforced Concrete Columneach2423100
Reinforced Concrete Pier Walllinear ft.1561014600
Reinforced Concrete Abutmentlinear ft.2401934700
Steel Pier Caplinear ft.170170000
Steel Protective Coatingsq. ft.1,61501,61500
Reinforced Concrete Pier Caplinear ft.45641717220
Joints
Strip Seal Jointlinear ft.120000120
Compression Jointlinear ft.4801300120230
Bearings
Elastomeric Bearingeach144144000
Fixed Bearingeach44000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.1,7101,6800300