T-366 Barron RD over Slippery Rock Creek
FairButler County, Pennsylvania · 0.15 MI SE of SR 0108 · Structure no. 000000000008300
- Built
- 1973
- 52 years old
- Condition
- Fair
- inspected October 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 103 ft
- 1 main span
- Daily traffic
- 200
- 2015 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
T-366 Barron RD over Slippery Rock Creek is a prestressed concrete box beam or girders - multiple carrying T-366 Barron RD over Slippery Rock Creek in Butler County, Pennsylvania. It was built in 1973, so it is 52 years old, younger than the Pennsylvania average of 54.8 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 200 vehicles a day, roughly 9% of them trucks, projected to reach 220 by 2035. The structure is 103 ft (31.4 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 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 T-366 Barron RD over Slippery Rock Creek built?
It was built in 1973, making it 52 years old in 2025.
What condition is T-366 Barron RD over Slippery Rock Creek 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 2023.
How much traffic does T-366 Barron RD over Slippery Rock Creek carry?
About 200 vehicles per day (2015 count), of which roughly 9% are trucks.
How long is T-366 Barron RD over Slippery Rock Creek?
The structure is 103 ft (31.4 m) long with a longest span of 100 ft (30.5 m) and a deck 30 ft wide.
Who owns T-366 Barron RD over Slippery Rock Creek?
It is owned by the Town or Township Highway Agency.