T-357 over Beaverdam Run
Mifflin County, Pennsylvania · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- T-357 over Beaverdam Run in Mifflin County, Pennsylvania, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 2014, making it 11 years old at the 2025 inventory.
- It carries about 399 vehicles a day (traffic count year 2023).
- Its listed owner is a town or township highway agency.
- It is one of 81 of the 196 inventoried bridges in Mifflin County rated good (41.3%); 23 (11.7%) 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 → (40.45439, -77.81414)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 7 | 7 | Good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 22 ft |
| Location | 1500 Ft SE of SR 22 |
| NBI structure number | 000000000049065 |
| 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 Mifflin County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SR 22-us 22 over Branch Kishacoquillas CR | 1958 | 36,350 | Fair |
| SR 322-us 322 over Buck Run | 1964 | 27,512 | Fair |
| SR 22-us 22 over Twp Rd 600 | 1958 | 14,029 | Fair |
| SR 22-us 22 over Valley Road | 1958 | 14,029 | Fair |
| SR 22-us 22 over Twp Rd 315 & Jacks Creek | 1958 | 14,029 | Fair |
| SR 22-us 22 over SR 522 Seda-cog | 1958 | 13,130 | Fair |
All bridges nearby: Mifflin County, PA bridge conditions · every bridge in Mifflin County · Pennsylvania bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.