+30.55882, -91.16010
30°33'32" N, 91°09'36" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:LA0423 over CYPRESS BAYOU
Structure number:611708173100821
Purpose:Carries highway over waterway
Route classification:Minor Arterial (Urban) [16]
Length of largest span:20.0 ft. [6.1 m]
Total length:120.1 ft. [36.6 m]
Roadway width between curbs:24.0 ft. [7.3 m]
Deck width edge-to-edge:28.9 ft. [8.8 m]
Owner:State Highway Agency [01]
Year built:1957
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:M 13.5 / H 15 [2]
Number of main spans:6
Main spans material:Concrete [1]
Main spans design:Slab [01]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: September 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:6,600 [as of 2016]
Truck traffic:13% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck geometry appraisal:Basically intolerable requiring high priority of replacement [2]
Water adequacy appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Equal to present desirable criteria [8]
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:Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Sufficiency rating:63.9
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$585,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
September 2017FairSatisfactorySatisfactoryGood660063.9
September 2015FairSatisfactorySatisfactoryGood660066.0
October 2013FairSatisfactorySatisfactoryGood660066.0
December 2011FairSatisfactorySatisfactoryGood730065.9
January 2010FairSatisfactoryGoodGood840065.7
January 2008FairSatisfactoryVery GoodVery Good850064.7
January 2006FairSatisfactoryVery GoodVery Good840064.7
January 2004FairSatisfactoryVery GoodVery Good800064.8
January 2002FairSatisfactoryVery GoodVery Good754564.8
January 2000FairSatisfactoryVery GoodVery Good693464.9
January 1998FairSatisfactoryVery GoodVery Good693465.9
January 1996FairSatisfactoryVery GoodVery Good701266.1
January 1994FairSatisfactoryVery GoodVery Good563366.3
January 1992FairSatisfactoryVery GoodVery Good689865.1

Element Data

Source: National Bridge Elements dataset, 2018 edition. This feature is experimental.
Reinforced Concrete Abutmentlinear ft.76480280
Prestressed Concrete Pileeach2041510
Reinforced Concrete Pier Caplinear ft.130128020
Pourable Jointlinear ft.168168000
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.240240000
Steel Protective Coatingsq. ft.1,2001,200000
Reinforced Concrete Slabsq. ft.2,88002,7601200