LA0311 over Little Bayou Black
GoodTerrebonne Parish, Louisiana · 1.15 MI South of LA 312 · Structure no. 025504130101131
- Built
- 1951
- 74 years old
- Condition
- Good
- inspected August 2024
- Type
- Culvert
- Concrete
- Length
- 40 ft
- 3 main spans
- Daily traffic
- 11,582
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
LA0311 over Little Bayou Black is a concrete culvert carrying LA0311 over Little Bayou Black in Terrebonne Parish, Louisiana. It was built in 1951, so it is 74 years old, older than the Louisiana average of 43 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 11,582 vehicles a day, roughly 11% of them trucks, projected to reach 12,740 by 2041. The structure is 40 ft (12.2 m) long and 48 ft wide. If it were closed, the detour would be 98.8 mi (159 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was LA0311 over Little Bayou Black built?
It was built in 1951, making it 74 years old in 2025.
What condition is LA0311 over Little Bayou Black in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2024.
How much traffic does LA0311 over Little Bayou Black carry?
About 11,582 vehicles per day (2021 count), of which roughly 11% are trucks.
How long is LA0311 over Little Bayou Black?
The structure is 40 ft (12.2 m) long with a longest span of 8 ft (2.4 m) and a deck 48 ft wide.
Who owns LA0311 over Little Bayou Black?
It is owned by the State Highway Agency.