S Frontage Rd 011 over Dempsey Creek 059
Powell County, Montana · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- S Frontage Rd 011 over Dempsey Creek 059 in Powell County, Montana, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1930 and reconstructed in 1941, making it 95 years old at the 2025 inventory.
- It carries about 916 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 7 of the 113 inventoried bridges in Powell County rated poor (6.2%); 7 (6.2%) 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 → (46.31299, -112.74592)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 5 | Fair condition |
| Superstructure | 5 | Fair condition |
| Substructure | 4 | Poor condition |
Bridge details
| Structure | Concrete slab |
| Length | about 63 ft |
| Location | 5M S Deer Lodge |
| NBI structure number | L39242004+03001 |
| Condition class | Poor |
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.