N Reserve ST over Clark Fork River
FairMissoula County, Montana · Missoula-N Reserve ST · Structure no. U08103003+02921
- Built
- 1975
- 50 years old, rebuilt 1998
- Condition
- Fair
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 832 ft
- 7 main spans
- Daily traffic
- 35,914
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
N Reserve ST over Clark Fork River is a prestressed concrete stringer/multi-beam or girder carrying N Reserve ST over Clark Fork River in Missoula County, Montana. It was built in 1975 and reconstructed in 1998, so it is 50 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 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 35,914 vehicles a day, roughly 1% of them trucks, projected to reach 37,710 by 2043. The structure is 832 ft (253.5 m) long and 79 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was N Reserve ST over Clark Fork River built?
It was built in 1975, making it 50 years old in 2025. It was reconstructed in 1998.
What condition is N Reserve ST over Clark Fork 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 2024.
How much traffic does N Reserve ST over Clark Fork River carry?
About 35,914 vehicles per day (2023 count), of which roughly 1% are trucks.
How long is N Reserve ST over Clark Fork River?
The structure is 832 ft (253.5 m) long with a longest span of 122 ft (37.2 m) and a deck 79 ft wide.
Who owns N Reserve ST over Clark Fork River?
It is owned by the State Highway Agency.