US Bridges

LA0356 over Bayou Boudreaux

Fair

St. Landry Parish, Louisiana · 3.0 MI E of LA 95 · Structure no. 034908490802321

Built
1967
58 years old
Condition
Fair
inspected February 2023
Type
Slab
Concrete
Length
80 ft
4 main spans
Daily traffic
466
2021 count
Owner
State
State Highway Agency

About this bridge

LA0356 over Bayou Boudreaux is a concrete slab carrying LA0356 over Bayou Boudreaux in St. Landry Parish, Louisiana. It was built in 1967, so it is 58 years old, older than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 466 vehicles a day, roughly 12% of them trucks, projected to reach 512 by 2041. The structure is 80 ft (24.4 m) long and 30 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesLA0356
CrossesBayou Boudreaux
Location3.0 MI E of LA 95
RouteState Highway 356
CountySt. Landry Parish
StateLouisiana
Coordinates30.37146, -92.1455
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73 US tons
Inventory rating44 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length80 ft (24.4 m)
Longest span20 ft (6.1 m)
Deck width30 ft (9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic466 (2021)
Projected traffic512 by 2041
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0356 over Bayou Boudreaux built?

It was built in 1967, making it 58 years old in 2025.

What condition is LA0356 over Bayou Boudreaux in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2023.

How much traffic does LA0356 over Bayou Boudreaux carry?

About 466 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is LA0356 over Bayou Boudreaux?

The structure is 80 ft (24.4 m) long with a longest span of 20 ft (6.1 m) and a deck 30 ft wide.

Who owns LA0356 over Bayou Boudreaux?

It is owned by the State Highway Agency.