Old Route 18 Rt over Mahoning River
PoorClosed to trafficLawrence County, Pennsylvania · 206010 Willowgrove BRDG#1 · Structure no. 000000000022538
- Built
- 1932
- 93 years old
- Condition
- Poor
- inspected August 2023
- Type
- Truss - Thru
- Steel
- Length
- 369 ft
- 1 main span
- Daily traffic
- 50
- 2013 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
Old Route 18 Rt over Mahoning River is a steel truss - thru carrying Old Route 18 Rt over Mahoning River in Lawrence County, Pennsylvania. It was built in 1932, so it is 93 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 1 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.
It carries about 50 vehicles a day, roughly 10% of them trucks, projected to reach 55 by 2033. The structure is 369 ft (112.5 m) long and 32 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 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 1 Imminent Failure | Major deterioration or section loss present in critical structural components. Bridge is closed to traffic but corrective action may put it back in light service. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Old Route 18 Rt over Mahoning River built?
It was built in 1932, making it 93 years old in 2025.
What condition is Old Route 18 Rt over Mahoning River 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 August 2023.
How much traffic does Old Route 18 Rt over Mahoning River carry?
About 50 vehicles per day (2013 count), of which roughly 10% are trucks.
How long is Old Route 18 Rt over Mahoning River?
The structure is 369 ft (112.5 m) long with a longest span of 257 ft (78.3 m) and a deck 32 ft wide.
Who owns Old Route 18 Rt over Mahoning River?
It is owned by the Town or Township Highway Agency.