N Fork RD over RR
FairFlathead County, Montana · Columbia Falls · Structure no. S00486001+04061
- Built
- 1972
- 53 years old
- Condition
- Fair
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 405 ft
- 4 main spans
- Daily traffic
- 2,421
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
N Fork RD over RR is a steel continuous stringer/multi-beam or girder carrying N Fork RD over RR in Flathead 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 2,421 vehicles a day, roughly 1% of them trucks, projected to reach 2,542 by 2043. The structure is 405 ft (123.4 m) long and 55 ft wide. If it were closed, the detour would be 5 mi (8 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was N Fork RD over RR built?
It was built in 1972, making it 53 years old in 2025.
What condition is N Fork RD over RR 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 August 2024.
How much traffic does N Fork RD over RR carry?
About 2,421 vehicles per day (2023 count), of which roughly 1% are trucks.
How long is N Fork RD over RR?
The structure is 405 ft (123.4 m) long with a longest span of 110 ft (33.5 m) and a deck 55 ft wide.
Who owns N Fork RD over RR?
It is owned by the State Highway Agency.