River ST N over Clark Fork 003
FairMineral County, Montana · Superior-River ST N · Structure no. L31007002+05101
- Built
- 1972
- 53 years old
- Condition
- Fair
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 437 ft
- 4 main spans
- Daily traffic
- 2,346
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
River ST N over Clark Fork 003 is a steel continuous stringer/multi-beam or girder carrying River ST N over Clark Fork 003 in Mineral County, Montana. It was built in 1972, so it is 53 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 2,346 vehicles a day, roughly 3% of them trucks, projected to reach 2,498 by 2043. The structure is 437 ft (133.2 m) long and 44 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was River ST N over Clark Fork 003 built?
It was built in 1972, making it 53 years old in 2025.
What condition is River ST N over Clark Fork 003 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 River ST N over Clark Fork 003 carry?
About 2,346 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is River ST N over Clark Fork 003?
The structure is 437 ft (133.2 m) long with a longest span of 120 ft (36.6 m) and a deck 44 ft wide.
Who owns River ST N over Clark Fork 003?
It is owned by the State Highway Agency.