T-351 Potato Valle over N.br.mahantango CR.
Snyder County, Pennsylvania · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- T-351 Potato Valle over N.br.mahantango CR. in Snyder County, Pennsylvania, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 1991, making it 34 years old at the 2025 inventory.
- It carries about 75 vehicles a day (traffic count year 2009).
- Its listed owner is a town or township highway agency.
- It is one of 79 of the 163 inventoried bridges in Snyder County rated good (48.5%); 9 (5.5%) 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 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 → (40.71709, -77.00134)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete multiple box beam |
| Length | about 39 ft |
| Location | 1 Mi.se of Mt.pleasant Ml |
| NBI structure number | 000000000031295 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | September 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Pennsylvania department of transportation.
Busiest bridges in Snyder County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US Rt. 15 & 11 over Carrie Run | 1962 | 27,854 | Fair |
| SR 522 over Penns Creek | 1943 | 19,255 | Fair |
| SR 15 NB & SB over Trib.to Susquehanna Rive | 1930 | 17,781 | Good |
| SR 15 over Trib.to Susquehanna Rive | 1930 | 17,781 | Fair |
| SR 11 over Silver Creek | 1992 | 15,037 | Good |
| Tr 11 Nb/sb over over Mahantango Creek | 2001 | 14,781 | Good |
All bridges nearby: Snyder County, PA bridge conditions · every bridge in Snyder County · Pennsylvania bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.