T-439 Watson RD over N Br Slippery Rock Creek
PoorButler County, Pennsylvania · 0.1 MI W of Black Road · Structure no. 000000000008255
- Built
- 1900
- 125 years old, rebuilt 2009
- Condition
- Poor
- inspected October 2023
- Type
- Truss - Thru
- Steel
- Length
- 38 ft
- 1 main span
- Daily traffic
- 50
- 2015 count
- Owner
- County
- County Highway Agency
About this bridge
T-439 Watson RD over N Br Slippery Rock Creek is a steel truss - thru carrying T-439 Watson RD over N Br Slippery Rock Creek in Butler County, Pennsylvania. It was built in 1900 and reconstructed in 2009, so it is 125 years old, older than the Pennsylvania average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 50 vehicles a day, roughly 9% of them trucks, projected to reach 75 by 2035. The structure is 38 ft (11.6 m) long and 16 ft wide. If it were closed, the detour would be 3.7 mi (6 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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-439 Watson RD over N Br Slippery Rock Creek built?
It was built in 1900, making it 125 years old in 2025. It was reconstructed in 2009.
What condition is T-439 Watson RD over N Br Slippery Rock Creek in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2023.
How much traffic does T-439 Watson RD over N Br Slippery Rock Creek carry?
About 50 vehicles per day (2015 count), of which roughly 9% are trucks.
How long is T-439 Watson RD over N Br Slippery Rock Creek?
The structure is 38 ft (11.6 m) long with a longest span of 36 ft (11 m) and a deck 16 ft wide.
Who owns T-439 Watson RD over N Br Slippery Rock Creek?
It is owned by the County Highway Agency.