Pa Tpk (I-476) over Unami Creek
Bucks County, Pennsylvania · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Pa Tpk (I-476) over Unami Creek in Bucks County, Pennsylvania, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1955, making it 70 years old at the 2025 inventory.
- It carries about 50,307 vehicles a day (traffic count year 2004).
- It is one of 428 of the 695 inventoried bridges in Bucks County rated fair (61.6%); 97 (14.0%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated September 2024, on a 24-month routine inspection cycle.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (40.39421, -75.41098)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 325 ft |
| Location | Unami Creek Bridge |
| NBI structure number | 000000000007702 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | September 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 7: scour countermeasures installed |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Pennsylvania department of transportation.
Busiest bridges in Bucks County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Lincoln Highway over Rockhill Drive | 1965 | 111,542 | Fair |
| Lincoln Highway over Neshaminy Creek | 1933 | 107,183 | Fair |
| Interstate 95 over Saint Francis Creek | 1964 | 91,624 | Fair |
| Pa Tpk (I-276) over SR 2040 | 1954 | 90,000 | Fair |
| Pa Turnpike(i-276) over Norfolk S.rr | 1954 | 90,000 | Fair |
| Pa Tpk (I-276) over Norfolk S.rr | 1954 | 85,801 | Fair |
All bridges nearby: Bucks County, PA bridge conditions · every bridge in Bucks County · Pennsylvania bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.