LA0506 over Black Bayou
FairPosted for loadCaldwell Parish, Louisiana · .4 MI West of US 165 · Structure no. 581103450307251
- Built
- 1953
- 72 years old
- Condition
- Fair
- inspected March 2023
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 78 ft
- 4 main spans
- Daily traffic
- 306
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
LA0506 over Black Bayou is a wood or timber stringer/multi-beam or girder carrying LA0506 over Black Bayou in Caldwell Parish, Louisiana. It was built in 1953, so it is 72 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. Its operating status is: posted for load restriction.
It carries about 306 vehicles a day, roughly 15% of them trucks, projected to reach 336 by 2041. The structure is 78 ft (23.8 m) long and 24 ft wide. If it were closed, the detour would be 6.2 mi (10 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was LA0506 over Black Bayou built?
It was built in 1953, making it 72 years old in 2025.
What condition is LA0506 over Black Bayou 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 March 2023.
How much traffic does LA0506 over Black Bayou carry?
About 306 vehicles per day (2021 count), of which roughly 15% are trucks.
How long is LA0506 over Black Bayou?
The structure is 78 ft (23.8 m) long with a longest span of 19 ft (5.8 m) and a deck 24 ft wide.
Who owns LA0506 over Black Bayou?
It is owned by the State Highway Agency.