Frontage Road 315 over Drainage 086
Dawson County, Montana · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Frontage Road 315 over Drainage 086 in Dawson County, Montana, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 8 (very good condition) on the 0-9 scale.
- It was built in 2019, making it 6 years old at the 2025 inventory.
- It carries about 115 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 8 of the 109 inventoried bridges in Dawson County rated good (7.3%); 9 (8.3%) are rated poor.
- 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 → (47.10447, -104.59743)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 8 | Very good condition |
Bridge details
| Structure | Prestressed concrete culvert |
| Length | about 41 ft |
| Location | 6M E Glendive |
| NBI structure number | 000000202002651 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Montana department of transportation.
Busiest bridges in Dawson County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| S 200s-towne St over Yellowstone River | 1958 | 8,821 | Fair |
| I 94 over Bad Route Creek | 1973 | 4,438 | Fair |
| I 94 over Cracker Box Creek | 1973 | 4,317 | Fair |
| I 94 over Clear Creek | 1973 | 4,317 | Poor |
| I 94 over Whoopup Creek | 1976 | 4,221 | Fair |
| I 94 over Sand Creek | 1976 | 4,221 | Fair |
All bridges nearby: Dawson County, MT bridge conditions · every bridge in Dawson County · Montana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.