+29.37414, -90.71180
29°22'27" N, 90°42'42" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:LA0057 over BAYOU DULAC
Structure number:025502460117211
Location:11.7 MI NORTH OF LA 56
Purpose:Carries highway over waterway
Route classification:Major Collector (Rural) [07]
Length of largest span:134.8 ft. [41.1 m]
Total length:462.0 ft. [140.8 m]
Roadway width between curbs:24.6 ft. [7.5 m]
Deck width edge-to-edge:32.5 ft. [9.9 m]
Vertical clearance above deck:18.7 ft. [5.7 m]
Vertical clearance below bridge:6.6 ft. [2.0 m]
Owner:State Highway Agency [01]
Year built:1971
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:Movable - Swing [17]
Deck type:Open Grating [3]

Latest Available Inspection: March 2018

Good/Fair/Poor Condition:Fair
Status:Posted for load [P]
Average daily traffic:2,000 [as of 2016]
Truck traffic:5% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Fair [5 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
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:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Channel protection:Banks are protected or well vegetated. River control devices such as spur dikes and embankment protection are not required or are in a stable condition. [8]
Pier/abutment protection:In place and functioning [2]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:55.3

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
March 2018FairSatisfactorySatisfactoryFair200055.3
March 2017FairSatisfactorySatisfactoryFair200055.3
March 2015FairSatisfactorySatisfactoryFair200040.4
March 2014FairSatisfactorySatisfactoryFair198036.6
March 2013FairSatisfactorySatisfactorySatisfactory230041.6
March 2011FairSatisfactorySatisfactorySatisfactory199045.5
March 2010FairSatisfactorySatisfactorySatisfactory198045.5
January 2009FairSatisfactorySatisfactorySatisfactory189045.9
October 2007FairFairFairSatisfactory280026.0
August 2005FairFairFairSatisfactory280026.0
April 2004FairFairFairSatisfactory74041.4
August 2002FairSatisfactorySatisfactorySatisfactory131048.4
August 2000FairSatisfactorySatisfactorySatisfactory225641.8
November 1998FairSatisfactorySatisfactorySatisfactory39650.9
November 1997FairSatisfactorySatisfactorySatisfactory39655.0
April 1996FairSatisfactorySatisfactorySatisfactory47353.7
March 1995FairSatisfactorySatisfactorySatisfactory45252.5
April 1993FairSatisfactorySatisfactorySatisfactory40152.7
April 1992FairSatisfactorySatisfactorySatisfactory36753.9

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Girder/Beamlinear ft.2806022000
Steel Protective Coatingsq. ft.4,82204,82200
Steel Stringerlinear ft.770110620400
Steel Protective Coatingsq. ft.3,85003,85000
Reinforced Concrete Decksq. ft.1,3501,3005000
Steel Floor Beamlinear ft.180180000
Steel Protective Coatingsq. ft.1,53001,53000
Prestressed Concrete Columneach3636000
Reinforced Concrete Pier Walllinear ft.108108000
Reinforced Concrete Abutmentlinear ft.7272000
Prestressed Concrete Pileeach3232000
Reinforced Concrete Pier Caplinear ft.4203724800
Open Grid Decksq. ft.1,6801,678200
Steel Protective Coatingsq. ft.2,1002,100000
Concrete Filled Grid Decksq. ft.550544600
Pourable Jointlinear ft.480004800
Open Jointlinear ft.9081900
Fixed Bearingeach44000
Steel Protective Coatingsq. ft.2121000
Pot Bearingeach11000
Steel Protective Coatingsq. ft.3636000
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.280280000
Reinforced Concrete Bridge Raillinear ft.640640000
Reinforced Concrete Slabsq. ft.9,6008,93067000
Steel Protective Coatingsq. ft.1,5201,520000