US 89 over Willow Creek
GoodPark County, Montana · 7M SE Clyde Park · Structure no. P00059007+07711
- Built
- 1984
- 41 years old
- Condition
- Good
- inspected August 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 36 ft
- 1 main span
- Daily traffic
- 1,457
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 89 over Willow Creek is a prestressed concrete stringer/multi-beam or girder carrying US 89 over Willow Creek in Park County, Montana. It was built in 1984, so it is 41 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 1,457 vehicles a day, roughly 3% of them trucks, projected to reach 1,530 by 2043. The structure is 36 ft (11 m) long and 46 ft wide. If it were closed, the detour would be 72.1 mi (116 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 89 over Willow Creek built?
It was built in 1984, making it 41 years old in 2025.
What condition is US 89 over Willow 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 August 2023.
How much traffic does US 89 over Willow Creek carry?
About 1,457 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is US 89 over Willow Creek?
The structure is 36 ft (11 m) long with a longest span of 35 ft (10.7 m) and a deck 46 ft wide.
Who owns US 89 over Willow Creek?
It is owned by the State Highway Agency.