S 82 over Flathead River
PoorFlathead County, Montana · 3M NW Big Fork · Structure no. P00082005+05831
- Built
- 1955
- 70 years old
- Condition
- Poor
- inspected September 2024
- Type
- Girder and Floorbeam System
- Steel Continuous
- Length
- 686 ft
- 4 main spans
- Daily traffic
- 8,310
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S 82 over Flathead River is a steel continuous girder and floorbeam system carrying S 82 over Flathead River in Flathead County, Montana. It was built in 1955, so it is 70 years old, older than the Montana average of 47 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 8,310 vehicles a day, roughly 2% of them trucks, projected to reach 9,723 by 2043. The structure is 686 ft (209 m) long and 29 ft wide. If it were closed, the detour would be 36 mi (58 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, 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 S 82 over Flathead River built?
It was built in 1955, making it 70 years old in 2025.
What condition is S 82 over Flathead River in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.
How much traffic does S 82 over Flathead River carry?
About 8,310 vehicles per day (2023 count), of which roughly 2% are trucks.
How long is S 82 over Flathead River?
The structure is 686 ft (209 m) long with a longest span of 180 ft (54.9 m) and a deck 29 ft wide.
Who owns S 82 over Flathead River?
It is owned by the State Highway Agency.