Nfsr 314 over Trout Creek
Powell County, Montana · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Nfsr 314 over Trout Creek in Powell County, Montana, 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 2004, making it 21 years old at the 2025 inventory.
- It carries about 50 vehicles a day (traffic count year 2004).
- It is one of 36 of the 113 inventoried bridges in Powell County rated good (31.9%); 7 (6.2%) 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 → (46.51673, -112.53964)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 8 | 8 | Very good condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 30 ft |
| Location | Spotted Dog-trout |
| NBI structure number | 011202000003128 |
| 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 Montana department of transportation.
Busiest bridges in Powell County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 90 over Dempsey Creek | 1973 | 10,708 | Fair |
| I 90 over Jr Grade Sep | 1961 | 10,463 | Fair |
| I 90 over Jr Grade Sep | 1961 | 10,463 | Fair |
| I 90 over Int Jens | 1959 | 5,992 | Fair |
| I 90 over Int Jens | 1959 | 5,992 | Fair |
| I 90 EB over Int Gold Creek | 1959 | 5,992 | Fair |
All bridges nearby: Powell County, MT bridge conditions · every bridge in Powell County · Montana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.