Old Mill Loop over RR 056
FairMineral County, Montana · ST Regis · Structure no. L31177000+02001
- Built
- 1999
- 26 years old
- Condition
- Fair
- inspected May 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 128 ft
- 3 main spans
- Daily traffic
- 100
- 2025 count
- Owner
- County
- County Highway Agency
About this bridge
Old Mill Loop over RR 056 is a steel continuous stringer/multi-beam or girder carrying Old Mill Loop over RR 056 in Mineral County, Montana. It was built in 1999, so it is 26 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 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 128 ft (39 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Old Mill Loop over RR 056 built?
It was built in 1999, making it 26 years old in 2025.
What condition is Old Mill Loop over RR 056 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 Old Mill Loop over RR 056 carry?
About 100 vehicles per day (2025 count), of which roughly 3% are trucks.
How long is Old Mill Loop over RR 056?
The structure is 128 ft (39 m) long with a longest span of 48 ft (14.6 m) and a deck 28 ft wide.
Who owns Old Mill Loop over RR 056?
It is owned by the County Highway Agency.