+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 

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]
Evaluation:Functionally obsolete [2]
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. ratingEvaluationDeckSuper.Sub.ADT
September 201566.0Functionally obsoleteSatisfactorySatisfactoryGood6600
October 201366.0Functionally obsoleteSatisfactorySatisfactoryGood6600
December 201165.9Functionally obsoleteSatisfactorySatisfactoryGood7300
January 201065.7Functionally obsoleteSatisfactoryGoodGood8400
January 200864.7Functionally obsoleteSatisfactoryVery GoodVery Good8500
January 200664.7Functionally obsoleteSatisfactoryVery GoodVery Good8400
January 200464.8Functionally obsoleteSatisfactoryVery GoodVery Good8000
January 200264.8Functionally obsoleteSatisfactoryVery GoodVery Good7545
January 200064.9Functionally obsoleteSatisfactoryVery GoodVery Good6934
January 199865.9Functionally obsoleteSatisfactoryVery GoodVery Good6934
January 199666.1Functionally obsoleteSatisfactoryVery GoodVery Good7012
January 199466.3Functionally obsoleteSatisfactoryVery GoodVery Good5633
January 199265.1Functionally obsoleteSatisfactoryVery GoodVery Good6898