Lower Sweet Grass over Sweet Grass Creek 039
GoodSweet Grass County, Montana · 10M E Big Timber · Structure no. L49001007+00001
- Built
- 1965
- 60 years old
- Condition
- Good
- inspected March 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 52 ft
- 1 main span
- Daily traffic
- 100
- 2025 count
- Owner
- County
- County Highway Agency
About this bridge
Lower Sweet Grass over Sweet Grass Creek 039 is a steel stringer/multi-beam or girder carrying Lower Sweet Grass over Sweet Grass Creek 039 in Sweet Grass County, Montana. It was built in 1965, so it is 60 years old, older 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 52 ft (15.8 m) long and 25 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 Lower Sweet Grass over Sweet Grass Creek 039 built?
It was built in 1965, making it 60 years old in 2025.
What condition is Lower Sweet Grass over Sweet Grass Creek 039 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 March 2024.
How much traffic does Lower Sweet Grass over Sweet Grass Creek 039 carry?
About 100 vehicles per day (2025 count), of which roughly 3% are trucks.
How long is Lower Sweet Grass over Sweet Grass Creek 039?
The structure is 52 ft (15.8 m) long with a longest span of 49 ft (14.9 m) and a deck 25 ft wide.
Who owns Lower Sweet Grass over Sweet Grass Creek 039?
It is owned by the County Highway Agency.