LA0408 over Blackwater Bayou
GoodEast Baton Rouge Parish, Louisiana · 3.5 M E of LA 67&LA 408 · Structure no. 611702550203932
- Built
- 1984
- 41 years old
- Condition
- Good
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 150 ft
- 3 main spans
- Daily traffic
- 19,515
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
LA0408 over Blackwater Bayou is a prestressed concrete continuous stringer/multi-beam or girder carrying LA0408 over Blackwater Bayou in East Baton Rouge Parish, Louisiana. It was built in 1984, so it is 41 years old, younger 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 19,515 vehicles a day, roughly 9% of them trucks, projected to reach 21,466 by 2041. The structure is 150 ft (45.7 m) long and 47 ft wide. If it were closed, the detour would be 1.9 mi (3 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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was LA0408 over Blackwater Bayou built?
It was built in 1984, making it 41 years old in 2025.
What condition is LA0408 over Blackwater Bayou 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 April 2024.
How much traffic does LA0408 over Blackwater Bayou carry?
About 19,515 vehicles per day (2021 count), of which roughly 9% are trucks.
How long is LA0408 over Blackwater Bayou?
The structure is 150 ft (45.7 m) long with a longest span of 50 ft (15.2 m) and a deck 47 ft wide.
Who owns LA0408 over Blackwater Bayou?
It is owned by the State Highway Agency.