+30.52882, -91.11018
30°31'44" N, 91°06'37" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:LA0408 over CYPRESS BAYOU
Structure number:611702550202081
Location:LA 408
Purpose:Carries highway over waterway
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:55.1 ft. [16.8 m]
Total length:167.0 ft. [50.9 m]
Roadway width between curbs:34.1 ft. [10.4 m]
Deck width edge-to-edge:39.4 ft. [12.0 m]
Owner:State Highway Agency [01]
Year built:1988
Historic significance:Historical significance is not determinable at this time [4]
Design load:MS 18 / HS 20 [5]
Number of main spans:3
Main spans material:Prestressed concrete [5]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: April 2014 

Status:Open, no restriction [A]
Average daily traffic:10,920 [as of 2014]
Truck traffic:9% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Very Good [8 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Better than present minimum criteria [7]
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:Equal to present desirable criteria [8]
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]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Operating rating:81.2 tons [73.8 metric tons]
Inventory rating:36.6 tons [33.3 metric tons]
Sufficiency rating:89.6

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
April 201489.6Not deficientGoodVery GoodGood10920
April 201289.7Not deficientGoodVery GoodGood10740
March 201089.3Not deficientVery GoodVery GoodVery Good11580
March 200889.4Not deficientVery GoodVery GoodVery Good11520
March 200689.3Not deficientVery GoodVery GoodVery Good11640
March 200489.3Not deficientVery GoodVery GoodVery Good11580
March 200289.8Not deficientVery GoodVery GoodVery Good10506
March 200089.9Not deficientVery GoodVery GoodVery Good10261
March 199889.9Not deficientVery GoodVery GoodVery Good10261
March 199689.7Not deficientVery GoodVery GoodVery Good10569
March 199490.4Not deficientVery GoodVery GoodVery Good8872
March 199290.5Not deficientVery GoodVery GoodVery Good8643