+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 2016 

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:10,920 [as of 2015]
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:81.8 tons [74.4 metric tons]
Inventory rating:37.0 tons [33.6 metric tons]
Sufficiency rating:89.6

Previous Inspections 

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
April 201689.6GoodGoodVery GoodGood-10920
April 201489.6GoodGoodVery GoodGood-10920
April 201289.7GoodGoodVery GoodGood-10740
March 201089.3GoodVery GoodVery GoodVery Good-11580
March 200889.4GoodVery GoodVery GoodVery Good-11520
March 200689.3GoodVery GoodVery GoodVery Good-11640
March 200489.3GoodVery GoodVery GoodVery Good-11580
March 200289.8GoodVery GoodVery GoodVery Good-10506
March 200089.9GoodVery GoodVery GoodVery Good-10261
March 199889.9GoodVery GoodVery GoodVery Good-10261
March 199689.7GoodVery GoodVery GoodVery Good-10569
March 199490.4GoodVery GoodVery GoodVery Good-8872
March 199290.5GoodVery GoodVery GoodVery Good-8643