US Bridges

LA0341 over Coulee Datider

Fair

St. Martin Parish, Louisiana · 0.93 MI North of LA 31 · Structure no. 035008500500931

Built
1964
61 years old
Condition
Fair
inspected May 2024
Type
Slab
Concrete
Length
60 ft
3 main spans
Daily traffic
2,152
2021 count
Owner
State
State Highway Agency

About this bridge

LA0341 over Coulee Datider is a concrete slab carrying LA0341 over Coulee Datider in St. Martin Parish, Louisiana. It was built in 1964, so it is 61 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 5 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 2,152 vehicles a day, roughly 12% of them trucks, projected to reach 2,367 by 2041. The structure is 60 ft (18.3 m) long and 30 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesLA0341
CrossesCoulee Datider
Location0.93 MI North of LA 31
RouteState Highway 341
CountySt. Martin Parish
StateLouisiana
Coordinates30.32428, -91.9091
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28.2 US tons
Inventory rating21.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span20 ft (6.1 m)
Deck width30 ft (9.1 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,152 (2021)
Projected traffic2,367 by 2041
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$327,000
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0341 over Coulee Datider built?

It was built in 1964, making it 61 years old in 2025.

What condition is LA0341 over Coulee Datider 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 May 2024.

How much traffic does LA0341 over Coulee Datider carry?

About 2,152 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is LA0341 over Coulee Datider?

The structure is 60 ft (18.3 m) long with a longest span of 20 ft (6.1 m) and a deck 30 ft wide.

Who owns LA0341 over Coulee Datider?

It is owned by the State Highway Agency.