Oilmont Hwy over Trail Creek
Toole County, Montana · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Oilmont Hwy over Trail Creek in Toole 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 1974, making it 51 years old at the 2025 inventory.
- It carries about 106 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 14 of the 35 inventoried bridges in Toole County rated good (40.0%); 0 (0.0%) 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 → (48.74015, -111.38746)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 8 | Very good condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 145 ft |
| Location | 21M E Oilmont |
| NBI structure number | S00343021+07241 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Montana department of transportation.
Busiest bridges in Toole County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| S 67 over Front St-rr | 1938 | 2,161 | Fair |
| I 15 over Sep County Road | 1976 | 1,520 | Fair |
| I 15 over Sep County Road | 1976 | 1,520 | Fair |
| I 15 over Marias River | 1976 | 1,311 | Good |
| I 15 over Marias River | 1976 | 1,311 | Good |
| I 15 over Int Shelby-rr | 1960 | 1,021 | Fair |
All bridges nearby: Toole County, MT bridge conditions · every bridge in Toole County · Montana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.