T-356 Cty Br #57 over Montour Run
Columbia County, Pennsylvania · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- T-356 Cty Br #57 over Montour Run in Columbia County, Pennsylvania, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 3 (serious condition) on the 0-9 scale.
- It was built in 1927, making it 98 years old at the 2025 inventory.
- It carries about 150 vehicles a day (traffic count year 2024).
- Its listed owner is the county highway agency.
- It is one of 27 of the 272 inventoried bridges in Columbia County rated poor (9.9%); 27 (9.9%) 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 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 → (40.98563, -76.4774)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Superstructure | 3 | 3 | Serious condition |
| Substructure | 4 | 4 | Poor condition |
Bridge details
| Structure | Deck arch |
| Length | about 26 ft |
| Location | 0.5 Mi. NW of Rupert |
| NBI structure number | 000000000012828 |
| Condition class | Poor |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | March 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 7: scour countermeasures installed |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Pennsylvania department of transportation.
Busiest bridges in Columbia County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-0080 Wbl over SR 1004 N.Br. Susq. Rvr | 2012 | 28,368 | Good |
| I-0080 Wbl over Delaware & Hudson RR | 2012 | 28,368 | Good |
| SR 0011 over Briar Creek | 1950 | 16,851 | Good |
| I 80 over over Fishing CR and T360 | 1965 | 15,607 | Good |
| SR-80 Wbl over over SR 4009 | 1965 | 15,607 | Fair |
| SR 0080 Wbl over over Twp Rd T-488 | 1963 | 15,607 | Fair |
All bridges nearby: Columbia County, PA bridge conditions · every bridge in Columbia County · Pennsylvania bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.