US 87-US 89 over Belt Creek
GoodCascade County, Montana · 2M S Belt · Structure no. 000000202206094
- Built
- 2022
- 3 years old
- Condition
- Good
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 242 ft
- 2 main spans
- Daily traffic
- 3,037
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 87-US 89 over Belt Creek is a steel stringer/multi-beam or girder carrying US 87-US 89 over Belt Creek in Cascade County, Montana. It was built in 2022, so it is 3 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 3,037 vehicles a day, roughly 18% of them trucks, projected to reach 3,189 by 2043. The structure is 242 ft (73.8 m) long and 78 ft wide. If it were closed, the detour would be 5 mi (8 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 | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 87-US 89 over Belt Creek built?
It was built in 2022, making it 3 years old in 2025.
What condition is US 87-US 89 over Belt Creek 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 September 2023.
How much traffic does US 87-US 89 over Belt Creek carry?
About 3,037 vehicles per day (2023 count), of which roughly 18% are trucks.
How long is US 87-US 89 over Belt Creek?
The structure is 242 ft (73.8 m) long with a longest span of 120 ft (36.5 m) and a deck 78 ft wide.
Who owns US 87-US 89 over Belt Creek?
It is owned by the State Highway Agency.