SR 518 Walnut ST over Pine Hollow Run
GoodMercer County, Pennsylvania · City of Hermitage · Structure no. 000000000042875
- Built
- 2006
- 19 years old
- Condition
- Good
- inspected May 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 369 ft
- 3 main spans
- Daily traffic
- 7,823
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SR 518 Walnut ST over Pine Hollow Run is a prestressed concrete continuous stringer/multi-beam or girder carrying SR 518 Walnut ST over Pine Hollow Run in Mercer County, Pennsylvania. It was built in 2006, so it is 19 years old, younger than the Pennsylvania average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 7,823 vehicles a day, roughly 6% of them trucks, projected to reach 12,185 by 2032. The structure is 369 ft (112.5 m) long and 43 ft wide. If it were closed, the detour would be 3.1 mi (5 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SR 518 Walnut ST over Pine Hollow Run built?
It was built in 2006, making it 19 years old in 2025.
What condition is SR 518 Walnut ST over Pine Hollow Run in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2024.
How much traffic does SR 518 Walnut ST over Pine Hollow Run carry?
About 7,823 vehicles per day (2023 count), of which roughly 6% are trucks.
How long is SR 518 Walnut ST over Pine Hollow Run?
The structure is 369 ft (112.5 m) long with a longest span of 131 ft (39.9 m) and a deck 43 ft wide.
Who owns SR 518 Walnut ST over Pine Hollow Run?
It is owned by the State Highway Agency.