T741 Old Route 422 over Trib Slippery Rock Creek
PoorPosted for loadLawrence County, Pennsylvania · 275 North of SR 422 · Structure no. 000000000041936
- Built
- 1921
- 104 years old
- Condition
- Poor
- inspected June 2024
- Type
- Tee Beam
- Concrete
- Length
- 37 ft
- 1 main span
- Daily traffic
- 300
- 2019 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
T741 Old Route 422 over Trib Slippery Rock Creek is a concrete tee beam carrying T741 Old Route 422 over Trib Slippery Rock Creek in Lawrence County, Pennsylvania. It was built in 1921, so it is 104 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 3 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. Its operating status is: posted for load restriction.
It carries about 300 vehicles a day, roughly 1% of them trucks, projected to reach 500 by 2039. The structure is 37 ft (11.3 m) long and 26 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 T741 Old Route 422 over Trib Slippery Rock Creek built?
It was built in 1921, making it 104 years old in 2025.
What condition is T741 Old Route 422 over Trib 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 June 2024.
How much traffic does T741 Old Route 422 over Trib Slippery Rock Creek carry?
About 300 vehicles per day (2019 count), of which roughly 1% are trucks.
How long is T741 Old Route 422 over Trib Slippery Rock Creek?
The structure is 37 ft (11.3 m) long with a longest span of 36 ft (11 m) and a deck 26 ft wide.
Who owns T741 Old Route 422 over Trib Slippery Rock Creek?
It is owned by the Town or Township Highway Agency.