US 287 over Madison River
FairMadison County, Montana · Ennis · Structure no. P00013048+06151
- Built
- 2001
- 24 years old
- Condition
- Fair
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 323 ft
- 3 main spans
- Daily traffic
- 4,500
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 287 over Madison River is a prestressed concrete continuous stringer/multi-beam or girder carrying US 287 over Madison River 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 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 4,500 vehicles a day, roughly 6% of them trucks, projected to reach 4,748 by 2043. The structure is 323 ft (98.3 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
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 | 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 built?
It was built in 2001, making it 24 years old in 2025.
What condition is US 287 over Madison River 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 July 2023.
How much traffic does US 287 over Madison River carry?
About 4,500 vehicles per day (2023 count), of which roughly 6% are trucks.
How long is US 287 over Madison River?
The structure is 323 ft (98.3 m) long with a longest span of 106 ft (32.3 m) and a deck 42 ft wide.
Who owns US 287 over Madison River?
It is owned by the State Highway Agency.