US 61 over Bayou Manchac
GoodEast Baton Rouge Parish, Louisiana · 0.80 Mi. N. of LA 427 · Structure no. 611700000610319
- Built
- 2021
- 4 years old
- Condition
- Good
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Concrete
- Length
- 300 ft
- 3 main spans
- Daily traffic
- 48,026
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
US 61 over Bayou Manchac is a concrete stringer/multi-beam or girder carrying US 61 over Bayou Manchac in East Baton Rouge Parish, Louisiana. It was built in 2021, so it is 4 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 48,026 vehicles a day, roughly 8% of them trucks, projected to reach 52,828 by 2041. The structure is 300 ft (91.4 m) long and 52 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 61 over Bayou Manchac built?
It was built in 2021, making it 4 years old in 2025.
What condition is US 61 over Bayou Manchac 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 July 2023.
How much traffic does US 61 over Bayou Manchac carry?
About 48,026 vehicles per day (2021 count), of which roughly 8% are trucks.
How long is US 61 over Bayou Manchac?
The structure is 300 ft (91.4 m) long with a longest span of 100 ft (30.5 m) and a deck 52 ft wide.
Who owns US 61 over Bayou Manchac?
It is owned by the State Highway Agency.