US 287 over South Willow Creek
PoorMadison County, Montana · Harrison · Structure no. P00013075+01321
- Built
- 1934
- 91 years old, rebuilt 1976
- Condition
- Poor
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 39 ft
- 2 main spans
- Daily traffic
- 4,102
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 287 over South Willow Creek is a wood or timber stringer/multi-beam or girder carrying US 287 over South Willow Creek in Madison County, Montana. It was built in 1934 and reconstructed in 1976, so it is 91 years old, older than the Montana average of 47 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 4,102 vehicles a day, roughly 4% of them trucks, projected to reach 4,307 by 2043. The structure is 39 ft (11.9 m) long and 37 ft wide. If it were closed, the detour would be 80.2 mi (129 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 287 over South Willow Creek built?
It was built in 1934, making it 91 years old in 2025. It was reconstructed in 1976.
What condition is US 287 over South Willow Creek in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.
How much traffic does US 287 over South Willow Creek carry?
About 4,102 vehicles per day (2023 count), of which roughly 4% are trucks.
How long is US 287 over South Willow Creek?
The structure is 39 ft (11.9 m) long with a longest span of 19 ft (5.8 m) and a deck 37 ft wide.
Who owns US 287 over South Willow Creek?
It is owned by the State Highway Agency.