Petty Creek RD over Clark Fork 008
FairMissoula County, Montana · 2M E Alberton · Structure no. L32090000+01001
- Built
- 1964
- 61 years old
- Condition
- Fair
- inspected May 2023
- Type
- Girder and Floorbeam System
- Steel Continuous
- Length
- 457 ft
- 3 main spans
- Daily traffic
- 948
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
Petty Creek RD over Clark Fork 008 is a steel continuous girder and floorbeam system carrying Petty Creek RD over Clark Fork 008 in Missoula County, Montana. It was built in 1964, so it is 61 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 948 vehicles a day, roughly 3% of them trucks, projected to reach 1,014 by 2043. The structure is 457 ft (139.3 m) long and 28 ft wide. If it were closed, the detour would be 26.7 mi (43 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Petty Creek RD over Clark Fork 008 built?
It was built in 1964, making it 61 years old in 2025.
What condition is Petty Creek RD over Clark Fork 008 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 May 2023.
How much traffic does Petty Creek RD over Clark Fork 008 carry?
About 948 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is Petty Creek RD over Clark Fork 008?
The structure is 457 ft (139.3 m) long with a longest span of 176 ft (53.6 m) and a deck 28 ft wide.
Who owns Petty Creek RD over Clark Fork 008?
It is owned by the County Highway Agency.