+30.55886, -91.15988
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 2015 

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:6,600 [as of 2015]
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]
Scour condition:Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Operating rating:37.6 tons [34.2 metric tons]
Inventory rating:22.8 tons [20.7 metric tons]
Sufficiency rating:66.0
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 

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
September 201566.0FairSatisfactorySatisfactoryGoodFO6600
October 201366.0FairSatisfactorySatisfactoryGoodFO6600
December 201165.9FairSatisfactorySatisfactoryGoodFO7300
January 201065.7FairSatisfactoryGoodGoodFO8400
January 200864.7FairSatisfactoryVery GoodVery GoodFO8500
January 200664.7FairSatisfactoryVery GoodVery GoodFO8400
January 200464.8FairSatisfactoryVery GoodVery GoodFO8000
January 200264.8FairSatisfactoryVery GoodVery GoodFO7545
January 200064.9FairSatisfactoryVery GoodVery GoodFO6934
January 199865.9FairSatisfactoryVery GoodVery GoodFO6934
January 199666.1FairSatisfactoryVery GoodVery GoodFO7012
January 199466.3FairSatisfactoryVery GoodVery GoodFO5633
January 199265.1FairSatisfactoryVery GoodVery GoodFO6898