Pa 309 By-Pass over Commerce Drive
GoodMontgomery County, Pennsylvania · Fort Washington 3257H09 · Structure no. 000000000045303
- Built
- 2008
- 17 years old
- Condition
- Good
- inspected September 2022
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 251 ft
- 3 main spans
- Daily traffic
- 63,453
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Pa 309 By-Pass over Commerce Drive is a steel continuous stringer/multi-beam or girder carrying Pa 309 By-Pass over Commerce Drive in Montgomery County, Pennsylvania. It was built in 2008, so it is 17 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 63,453 vehicles a day, roughly 4% of them trucks, projected to reach 67,288 by 2032. The structure is 251 ft (76.5 m) long and 137 ft wide. If it were closed, the detour would be 5 mi (8 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 Pa 309 By-Pass over Commerce Drive built?
It was built in 2008, making it 17 years old in 2025.
What condition is Pa 309 By-Pass over Commerce Drive 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 September 2022.
How much traffic does Pa 309 By-Pass over Commerce Drive carry?
About 63,453 vehicles per day (2023 count), of which roughly 4% are trucks.
How long is Pa 309 By-Pass over Commerce Drive?
The structure is 251 ft (76.5 m) long with a longest span of 105 ft (32 m) and a deck 137 ft wide.
Who owns Pa 309 By-Pass over Commerce Drive?
It is owned by the State Highway Agency.