US0171 over Bayou San Miguel
GoodSabine Parish, Louisiana · 2.68 Mi. South of LA 1218 · Structure no. 084300250312591
- Built
- 2002
- 23 years old
- Condition
- Good
- inspected October 2024
- Type
- Slab
- Concrete
- Length
- 200 ft
- 10 main spans
- Daily traffic
- 5,192
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
US0171 over Bayou San Miguel is a concrete slab carrying US0171 over Bayou San Miguel in Sabine Parish, Louisiana. It was built in 2002, so it is 23 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 5,192 vehicles a day, roughly 15% of them trucks, projected to reach 5,711 by 2041. The structure is 200 ft (61 m) long and 43 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US0171 over Bayou San Miguel built?
It was built in 2002, making it 23 years old in 2025.
What condition is US0171 over Bayou San Miguel 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 October 2024.
How much traffic does US0171 over Bayou San Miguel carry?
About 5,192 vehicles per day (2021 count), of which roughly 15% are trucks.
How long is US0171 over Bayou San Miguel?
The structure is 200 ft (61 m) long with a longest span of 20 ft (6.1 m) and a deck 43 ft wide.
Who owns US0171 over Bayou San Miguel?
It is owned by the State Highway Agency.