Old Williampenn Hw over Thompson Run Creek
PoorClosed to trafficAllegheny County, Pennsylvania · 446002 Old Wm Penn Hgwy · Structure no. 000000000002629
- Built
- 1900
- 125 years old, rebuilt 1926
- Condition
- Poor
- inspected July 2023
- Type
- Tee Beam
- Concrete
- Length
- 50 ft
- 1 main span
- Daily traffic
- 300
- 2017 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Old Williampenn Hw over Thompson Run Creek is a concrete tee beam carrying Old Williampenn Hw over Thompson Run Creek in Allegheny County, Pennsylvania. It was built in 1900 and reconstructed in 1926, so it is 125 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 300 vehicles a day, roughly 2% of them trucks, projected to reach 305 by 2039. The structure is 50 ft (15.2 m) long and 30 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 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 | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| 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 | 2 Critical | Advanced deterioration of primary structural elements. Bridge may be closed until corrective action is taken. |
| 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 Williampenn Hw over Thompson Run Creek built?
It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1926.
What condition is Old Williampenn Hw over Thompson Run 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 July 2023.
How much traffic does Old Williampenn Hw over Thompson Run Creek carry?
About 300 vehicles per day (2017 count), of which roughly 2% are trucks.
How long is Old Williampenn Hw over Thompson Run Creek?
The structure is 50 ft (15.2 m) long with a longest span of 44 ft (13.4 m) and a deck 30 ft wide.
Who owns Old Williampenn Hw over Thompson Run Creek?
It is owned by the City or Municipal Highway Agency.