T-357 Porterfield over Over Mill Creek
FairVenango County, Pennsylvania · Richland Township · Structure no. 000000000033917
- Built
- 1901
- 124 years old
- Condition
- Fair
- inspected February 2024
- Type
- Arch - Deck
- Masonry
- Length
- 20 ft
- 1 main span
- Daily traffic
- 100
- 2014 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
T-357 Porterfield over Over Mill Creek is a masonry arch - deck carrying T-357 Porterfield over Over Mill Creek in Venango County, Pennsylvania. It was built in 1901, so it is 124 years old, older 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 6 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 100 vehicles a day, roughly 10% of them trucks, projected to reach 140 by 2034. The structure is 20 ft (6.1 m) long and 17 ft wide. If it were closed, the detour would be 3.7 mi (6 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 |
|---|---|---|
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was T-357 Porterfield over Over Mill Creek built?
It was built in 1901, making it 124 years old in 2025.
What condition is T-357 Porterfield over Over Mill Creek 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 February 2024.
How much traffic does T-357 Porterfield over Over Mill Creek carry?
About 100 vehicles per day (2014 count), of which roughly 10% are trucks.
How long is T-357 Porterfield over Over Mill Creek?
The structure is 20 ft (6.1 m) long with a longest span of 20 ft (6.1 m) and a deck 17 ft wide.
Who owns T-357 Porterfield over Over Mill Creek?
It is owned by the Town or Township Highway Agency.