Yellowstone Trail over Duck Creek
FairSweet Grass County, Montana · 17M W Big Timber · Structure no. 000000000007080
- Built
- 1980
- 45 years old
- Condition
- Fair
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 30 ft
- 1 main span
- Daily traffic
- 129
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
Yellowstone Trail over Duck Creek is a wood or timber stringer/multi-beam or girder carrying Yellowstone Trail over Duck Creek in Sweet Grass County, Montana. It was built in 1980, so it is 45 years old, younger 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 129 vehicles a day, roughly 3% of them trucks, projected to reach 136 by 2043. The structure is 30 ft (9.2 m) long and 20 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Yellowstone Trail over Duck Creek built?
It was built in 1980, making it 45 years old in 2025.
What condition is Yellowstone Trail over Duck Creek 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 August 2024.
How much traffic does Yellowstone Trail over Duck Creek carry?
About 129 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is Yellowstone Trail over Duck Creek?
The structure is 30 ft (9.2 m) long with a longest span of 28 ft (8.6 m) and a deck 20 ft wide.
Who owns Yellowstone Trail over Duck Creek?
It is owned by the County Highway Agency.