Boston Coulee RD over Smith River 027
GoodCascade County, Montana · 7M SW Eden · Structure no. L07418000+02001
- Built
- 2004
- 21 years old
- Condition
- Good
- inspected November 2023
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 166 ft
- 2 main spans
- Daily traffic
- 30
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
Boston Coulee RD over Smith River 027 is a prestressed concrete tee beam carrying Boston Coulee RD over Smith River 027 in Cascade County, Montana. It was built in 2004, so it is 21 years old, younger than the Montana average of 47 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 30 vehicles a day, roughly 3% of them trucks, projected to reach 32 by 2043. The structure is 166 ft (50.5 m) long and 28 ft wide. If it were closed, the detour would be 29.8 mi (48 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Boston Coulee RD over Smith River 027 built?
It was built in 2004, making it 21 years old in 2025.
What condition is Boston Coulee RD over Smith River 027 in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2023.
How much traffic does Boston Coulee RD over Smith River 027 carry?
About 30 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is Boston Coulee RD over Smith River 027?
The structure is 166 ft (50.5 m) long with a longest span of 91 ft (27.8 m) and a deck 28 ft wide.
Who owns Boston Coulee RD over Smith River 027?
It is owned by the County Highway Agency.