US0171 over Bayou San Miguel
FairSabine Parish, Louisiana · 0.96 Mi. North of LA 120 · Structure no. 084300250312082
- Built
- 1963
- 62 years old
- Condition
- Fair
- inspected October 2024
- Type
- Slab
- Concrete
- Length
- 200 ft
- 10 main spans
- Daily traffic
- 4,790
- 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 1963, so it is 62 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 4,790 vehicles a day, roughly 15% of them trucks, projected to reach 5,269 by 2041. The structure is 200 ft (61 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 1963, making it 62 years old in 2025.
What condition is US0171 over Bayou San Miguel 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 October 2024.
How much traffic does US0171 over Bayou San Miguel carry?
About 4,790 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 33 ft wide.
Who owns US0171 over Bayou San Miguel?
It is owned by the State Highway Agency.