SR 309 Bypass over Loch Alsh Avenue
GoodMontgomery County, Pennsylvania · Upper Dublin 3257H06 · Structure no. 000000000027384
- Built
- 1958
- 67 years old, rebuilt 2010
- Condition
- Good
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 140 ft
- 3 main spans
- Daily traffic
- 63,375
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
SR 309 Bypass over Loch Alsh Avenue is a steel continuous stringer/multi-beam or girder carrying SR 309 Bypass over Loch Alsh Avenue in Montgomery County, Pennsylvania. It was built in 1958 and reconstructed in 2010, so it is 67 years old, older 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 63,375 vehicles a day, roughly 3% of them trucks, projected to reach 56,827 by 2032. The structure is 140 ft (42.7 m) long and 93 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 | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SR 309 Bypass over Loch Alsh Avenue built?
It was built in 1958, making it 67 years old in 2025. It was reconstructed in 2010.
What condition is SR 309 Bypass over Loch Alsh Avenue 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 July 2024.
How much traffic does SR 309 Bypass over Loch Alsh Avenue carry?
About 63,375 vehicles per day (2024 count), of which roughly 3% are trucks.
How long is SR 309 Bypass over Loch Alsh Avenue?
The structure is 140 ft (42.7 m) long with a longest span of 69 ft (21 m) and a deck 93 ft wide.
Who owns SR 309 Bypass over Loch Alsh Avenue?
It is owned by the State Highway Agency.