Mill Coulee RD over Mill Coulee Canal 064
FairCascade County, Montana · 8M SE Fairfield · Structure no. L07119001+01001
- Built
- 1920
- 105 years old
- Condition
- Fair
- inspected January 2025
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 29 ft
- 2 main spans
- Daily traffic
- 100
- 2025 count
- Owner
- County
- County Highway Agency
About this bridge
Mill Coulee RD over Mill Coulee Canal 064 is a wood or timber stringer/multi-beam or girder carrying Mill Coulee RD over Mill Coulee Canal 064 in Cascade County, Montana. It was built in 1920, so it is 105 years old, older than the Montana average of 47 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 29 ft (8.8 m) long and 22 ft wide. If it were closed, the detour would be 3.7 mi (6 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mill Coulee RD over Mill Coulee Canal 064 built?
It was built in 1920, making it 105 years old in 2025.
What condition is Mill Coulee RD over Mill Coulee Canal 064 in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in January 2025.
How much traffic does Mill Coulee RD over Mill Coulee Canal 064 carry?
About 100 vehicles per day (2025 count), of which roughly 3% are trucks.
How long is Mill Coulee RD over Mill Coulee Canal 064?
The structure is 29 ft (8.8 m) long with a longest span of 13 ft (4.1 m) and a deck 22 ft wide.
Who owns Mill Coulee RD over Mill Coulee Canal 064?
It is owned by the County Highway Agency.