SR 12 over Black Bayou Trib
FairWashington County, Mississippi · 9.6 MI E SR 1 · Structure no. 310001207601090
- Built
- 1983
- 42 years old
- Condition
- Fair
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 81 ft
- 2 main spans
- Daily traffic
- 600
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SR 12 over Black Bayou Trib is a prestressed concrete stringer/multi-beam or girder carrying SR 12 over Black Bayou Trib in Washington County, Mississippi. It was built in 1983, so it is 42 years old, older than the Mississippi average of 38.9 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 600 vehicles a day, roughly 11% of them trucks, projected to reach 600 by 2043. The structure is 81 ft (24.7 m) long and 35 ft wide. If it were closed, the detour would be 23 mi (37 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 | 8 Very Good | No problems noted. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SR 12 over Black Bayou Trib built?
It was built in 1983, making it 42 years old in 2025.
What condition is SR 12 over Black Bayou Trib 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 November 2024.
How much traffic does SR 12 over Black Bayou Trib carry?
About 600 vehicles per day (2023 count), of which roughly 11% are trucks.
How long is SR 12 over Black Bayou Trib?
The structure is 81 ft (24.7 m) long with a longest span of 40 ft (12.2 m) and a deck 35 ft wide.
Who owns SR 12 over Black Bayou Trib?
It is owned by the State Highway Agency.