Old Route 422 Rt over Slippery Rock Creek
PoorClosed to trafficLawrence County, Pennsylvania · 250 W of Muddy Creek RD · Structure no. 000000000022563
- Built
- 1920
- 105 years old
- Condition
- Poor
- inspected June 2024
- Type
- Truss - Thru
- Steel
- Length
- 190 ft
- 1 main span
- Daily traffic
- —
- 2014 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
Old Route 422 Rt over Slippery Rock Creek is a steel truss - thru carrying Old Route 422 Rt over Slippery Rock Creek in Lawrence County, Pennsylvania. It was built in 1920, so it is 105 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 0 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: closed to all traffic.
No traffic count is recorded. The structure is 190 ft (57.9 m) long and 25 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 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 | 0 Failed | Out of service and beyond corrective action. |
| Superstructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Old Route 422 Rt over Slippery Rock Creek built?
It was built in 1920, making it 105 years old in 2025.
What condition is Old Route 422 Rt over 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 Old Route 422 Rt over Slippery Rock Creek carry?
No traffic count is recorded for this structure.
How long is Old Route 422 Rt over Slippery Rock Creek?
The structure is 190 ft (57.9 m) long with a longest span of 185 ft (56.4 m) and a deck 25 ft wide.
Who owns Old Route 422 Rt over Slippery Rock Creek?
It is owned by the Town or Township Highway Agency.