T-642 over Zimmerman Creek
Tioga County, Pennsylvania · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- T-642 over Zimmerman Creek in Tioga County, Pennsylvania, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 1 (imminent failure condition) on the 0-9 scale.
- It was built in 1909 and reconstructed in 1989, making it 116 years old at the 2025 inventory.
- It carries about 50 vehicles a day (traffic count year 2023).
- Its listed owner is a town or township highway agency.
- It is one of 14 of the 431 inventoried bridges in Tioga County rated poor (3.2%); 14 (3.2%) are rated poor.
- 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 → (41.56944, -77.20341)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 4 | Poor condition |
| Superstructure | 4 | Poor condition |
| Substructure | 1 | Imminent failure condition |
Bridge details
| Structure | Steel through truss |
| Length | about 41 ft |
| Location | 0.5 Mile NE of Nauvoo |
| NBI structure number | 000000000033286 |
| Condition class | Poor |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Pennsylvania department of transportation.
Busiest bridges in Tioga County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 6 over Charleston Creek | 1939 | 12,098 | Fair |
| SR 0006 over over Morris Branch | 2022 | 12,098 | Good |
| SR 2005 over Canoe Camp Creek | 1985 | 8,854 | Good |
| SR 6 over over Kelsey Creek | 1938 | 7,477 | Good |
| SR 0006 over Tioga River | 1979 | 7,092 | Fair |
| SR 15 Northbound over SR 2026 | 2000 | 6,724 | Good |
All bridges nearby: Tioga County, PA bridge conditions · every bridge in Tioga County · Pennsylvania bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.