US 2 over Red Rock West Overflow
Blaine County, Montana · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US 2 over Red Rock West Overflow in Blaine County, Montana, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 8 (very good condition) on the 0-9 scale.
- It was built in 2020, making it 5 years old at the 2025 inventory.
- It carries about 2,732 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 35 of the 102 inventoried bridges in Blaine County rated good (34.3%); 10 (9.8%) 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 → (48.59636, -109.27624)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 8 | Very good condition |
| Superstructure | 8 | Very good condition |
| Substructure | 8 | Very good condition |
Bridge details
| Structure | Prestressed concrete slab |
| Length | about 54 ft |
| Location | 2M W Chinook |
| NBI structure number | 000000202005066 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Montana department of transportation.
Busiest bridges in Blaine County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 2 over Main Irrigation Canal | 1968 | 3,311 | Good |
| Irr - US 2 over Milk River | 1964 | 3,311 | Poor |
| US 2 over Red Rock Creek Overflow | 1942 | 2,919 | Fair |
| US 2 over Drainage | 1942 | 2,919 | Fair |
| US 2 over Red Rock Coulee | 2020 | 2,732 | Good |
| US 2 over Red Rock East Overflow | 2020 | 2,732 | Good |
All bridges nearby: Blaine County, MT bridge conditions · every bridge in Blaine County · Montana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.