Old Williampenn Hw over Thompson Run
FairAllegheny County, Pennsylvania · 446001 Old Willm Penn HWY · Structure no. 000000000002628
- Built
- 1988
- 37 years old
- Condition
- Fair
- inspected March 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 25 ft
- 1 main span
- Daily traffic
- 200
- 2019 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Old Williampenn Hw over Thompson Run is a prestressed concrete box beam or girders - multiple carrying Old Williampenn Hw over Thompson Run in Allegheny County, Pennsylvania. It was built in 1988, so it is 37 years old, younger than the Pennsylvania average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 200 vehicles a day, roughly 6% of them trucks, projected to reach 225 by 2040. The structure is 25 ft (7.6 m) long and 21 ft wide. If it were closed, the detour would be 98.8 mi (159 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, 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 Old Williampenn Hw over Thompson Run built?
It was built in 1988, making it 37 years old in 2025.
What condition is Old Williampenn Hw over Thompson Run in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2023.
How much traffic does Old Williampenn Hw over Thompson Run carry?
About 200 vehicles per day (2019 count), of which roughly 6% are trucks.
How long is Old Williampenn Hw over Thompson Run?
The structure is 25 ft (7.6 m) long with a longest span of 23 ft (7 m) and a deck 21 ft wide.
Who owns Old Williampenn Hw over Thompson Run?
It is owned by the City or Municipal Highway Agency.