Pa Tpk (I-476) over Unami Creek
FairBucks County, Pennsylvania · Unami Creek Bridge · Structure no. 000000000007702
- Built
- 1955
- 70 years old
- Condition
- Fair
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 325 ft
- 3 main spans
- Daily traffic
- 50,307
- 2004 count
- Owner
- Toll Authority
- State Toll Authority
About this bridge
Pa Tpk (I-476) over Unami Creek is a steel continuous stringer/multi-beam or girder carrying Pa Tpk (I-476) over Unami Creek in Bucks County, Pennsylvania. It was built in 1955, so it is 70 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 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 50,307 vehicles a day, roughly 15% of them trucks, projected to reach 78,780 by 2030. The structure is 325 ft (99.1 m) long and 62 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Pa Tpk (I-476) over Unami Creek built?
It was built in 1955, making it 70 years old in 2025.
What condition is Pa Tpk (I-476) over Unami 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 September 2024.
How much traffic does Pa Tpk (I-476) over Unami Creek carry?
About 50,307 vehicles per day (2004 count), of which roughly 15% are trucks.
How long is Pa Tpk (I-476) over Unami Creek?
The structure is 325 ft (99.1 m) long with a longest span of 123 ft (37.5 m) and a deck 62 ft wide.
Who owns Pa Tpk (I-476) over Unami Creek?
It is owned by the State Toll Authority.