US 287 over Madison River Overflow
GoodMadison County, Montana · SE Ennis · Structure no. P00013048+02901
- Built
- 2001
- 24 years old
- Condition
- Good
- inspected September 2023
- Type
- Slab
- Concrete Continuous
- Length
- 93 ft
- 4 main spans
- Daily traffic
- 4,500
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 287 over Madison River Overflow is a concrete continuous slab carrying US 287 over Madison River Overflow in Madison County, Montana. It was built in 2001, so it is 24 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 4,500 vehicles a day, roughly 6% of them trucks, projected to reach 4,748 by 2043. The structure is 93 ft (28.2 m) long and 42 ft wide. If it were closed, the detour would be 19.9 mi (32 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 287 over Madison River Overflow built?
It was built in 2001, making it 24 years old in 2025.
What condition is US 287 over Madison River Overflow 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 287 over Madison River Overflow carry?
About 4,500 vehicles per day (2023 count), of which roughly 6% are trucks.
How long is US 287 over Madison River Overflow?
The structure is 93 ft (28.2 m) long with a longest span of 23 ft (6.9 m) and a deck 42 ft wide.
Who owns US 287 over Madison River Overflow?
It is owned by the State Highway Agency.