W Reserve DR over Stillwater River
FairFlathead County, Montana · 3M NW Kalispell · Structure no. S00548004+05001
- Built
- 1983
- 42 years old
- Condition
- Fair
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 209 ft
- 3 main spans
- Daily traffic
- 100
- 2025 count
- Owner
- State
- State Highway Agency
About this bridge
W Reserve DR over Stillwater River is a prestressed concrete stringer/multi-beam or girder carrying W Reserve DR over Stillwater River in Flathead County, Montana. It was built in 1983, so it is 42 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 209 ft (63.7 m) long and 59 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was W Reserve DR over Stillwater River built?
It was built in 1983, making it 42 years old in 2025.
What condition is W Reserve DR over Stillwater 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 November 2024.
How much traffic does W Reserve DR over Stillwater River carry?
About 100 vehicles per day (2025 count), of which roughly 3% are trucks.
How long is W Reserve DR over Stillwater River?
The structure is 209 ft (63.7 m) long with a longest span of 77 ft (23.5 m) and a deck 59 ft wide.
Who owns W Reserve DR over Stillwater River?
It is owned by the State Highway Agency.