US 87 over Abandoned Railroad
FairChouteau County, Montana · 6M SW Loma · Structure no. P00010045+08371
- Built
- 1974
- 51 years old
- Condition
- Fair
- inspected May 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 528 ft
- 2 main spans
- Daily traffic
- 1,727
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 87 over Abandoned Railroad is a steel stringer/multi-beam or girder carrying US 87 over Abandoned Railroad in Chouteau County, Montana. It was built in 1974, so it is 51 years old, older 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 5 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 1,727 vehicles a day, roughly 10% of them trucks, projected to reach 1,813 by 2043. The structure is 528 ft (160.9 m) long and 47 ft wide. If it were closed, the detour would be 113.7 mi (183 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 | 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 87 over Abandoned Railroad built?
It was built in 1974, making it 51 years old in 2025.
What condition is US 87 over Abandoned Railroad 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 May 2023.
How much traffic does US 87 over Abandoned Railroad carry?
About 1,727 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is US 87 over Abandoned Railroad?
The structure is 528 ft (160.9 m) long with a longest span of 86 ft (26.2 m) and a deck 47 ft wide.
Who owns US 87 over Abandoned Railroad?
It is owned by the State Highway Agency.