T-479 South Street over Cowanesque River
Potter County, Pennsylvania · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- T-479 South Street over Cowanesque River in Potter County, Pennsylvania, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 7 (good condition) on the 0-9 scale.
- It was built in 2006, making it 19 years old at the 2025 inventory.
- It carries about 30 vehicles a day (traffic count year 2017).
- Its listed owner is a town or township highway agency.
- It is one of 93 of the 206 inventoried bridges in Potter County rated good (45.1%); 25 (12.1%) 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 March 2023, on a 24-month routine inspection cycle.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (41.93957, -77.64887)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 8 | 8 | Very good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete multiple box beam |
| Length | about 112 ft |
| Location | 500 Ft South of SR 49 |
| NBI structure number | 000000000043477 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | March 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Pennsylvania department of transportation.
Busiest bridges in Potter County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SR 6-us 6 over Allegheny River | 1949 | 7,298 | Fair |
| SR 6-us 6 over Allegheny River | 1934 | 6,354 | Fair |
| SR 6 - US 6 over Allegheny River | 2008 | 6,095 | Good |
| Port Allegany Rd over Dingmans Run | 2018 | 5,678 | Good |
| SR 6-us 6 over North Hollow Run | 1985 | 5,471 | Fair |
| SR 6-us 6 over Lyman Creek | 1962 | 5,471 | Good |
All bridges nearby: Potter County, PA bridge conditions · every bridge in Potter County · Pennsylvania bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.