T-351 Topeka Road over Oswayo Creek
Potter County, Pennsylvania · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- T-351 Topeka Road over Oswayo Creek in Potter County, Pennsylvania, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 1 (imminent failure condition) on the 0-9 scale.
- It was built in 1920 and reconstructed in 1997, making it 105 years old at the 2025 inventory.
- Its listed owner is a town or township highway agency.
- It is one of 25 of the 206 inventoried bridges in Potter County rated poor (12.1%); 25 (12.1%) are rated poor.
- Its traffic status in the 2025 inventory is closed to all traffic (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated September 2023, on a 24-month routine inspection cycle.
- It is coded scour critical (NBI item 113 = 1): scour critical: field review indicates failure of piers or abutments is imminent.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (41.9097, -78.093)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 1 | 1 | Imminent failure condition |
| Substructure | 1 | 1 | Imminent failure condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 62 ft |
| Location | 400 Ft From SR 44 |
| NBI structure number | 000000000030439 |
| Condition class | Poor |
| Traffic status (item 41) | Closed to all traffic |
| Last inspection (item 90) | September 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 1: scour critical: field review indicates failure of piers or abutments is imminent |
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.