Boulder RD over Boulder River 002
FairPosted for loadSweet Grass County, Montana · 19M S Mcleod · Structure no. L49102007+01001
- Built
- 1931
- 94 years old, rebuilt 1991
- Condition
- Fair
- inspected July 2024
- Type
- Truss - Thru
- Steel
- Length
- 112 ft
- 1 main span
- Daily traffic
- 157
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
Boulder RD over Boulder River 002 is a steel truss - thru carrying Boulder RD over Boulder River 002 in Sweet Grass County, Montana. It was built in 1931 and reconstructed in 1991, so it is 94 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. Its operating status is: posted for load restriction.
It carries about 157 vehicles a day, roughly 17% of them trucks, projected to reach 165 by 2043. The structure is 112 ft (34.1 m) long and 14 ft wide. If it were closed, the detour would be 123.7 mi (199 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 Boulder RD over Boulder River 002 built?
It was built in 1931, making it 94 years old in 2025. It was reconstructed in 1991.
What condition is Boulder RD over Boulder River 002 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 July 2024.
How much traffic does Boulder RD over Boulder River 002 carry?
About 157 vehicles per day (2023 count), of which roughly 17% are trucks.
How long is Boulder RD over Boulder River 002?
The structure is 112 ft (34.1 m) long with a longest span of 75 ft (22.9 m) and a deck 14 ft wide.
Who owns Boulder RD over Boulder River 002?
It is owned by the County Highway Agency.