Lacasse LN over Frenchtown IRR Canal 094
FairMissoula County, Montana · 4M S Frenchtown · Structure no. L32189000+02001
- Built
- 1960
- 65 years old
- Condition
- Fair
- inspected February 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 24 ft
- 1 main span
- Daily traffic
- 190
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
Lacasse LN over Frenchtown IRR Canal 094 is a steel stringer/multi-beam or girder carrying Lacasse LN over Frenchtown IRR Canal 094 in Missoula County, Montana. It was built in 1960, so it is 65 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 190 vehicles a day, roughly 3% of them trucks, projected to reach 203 by 2043. The structure is 24 ft (7.3 m) long and 16 ft wide. If it were closed, the detour would be 123.7 mi (199 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 | 7 Good | Some minor problems. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Lacasse LN over Frenchtown IRR Canal 094 built?
It was built in 1960, making it 65 years old in 2025.
What condition is Lacasse LN over Frenchtown IRR Canal 094 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 February 2024.
How much traffic does Lacasse LN over Frenchtown IRR Canal 094 carry?
About 190 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is Lacasse LN over Frenchtown IRR Canal 094?
The structure is 24 ft (7.3 m) long with a longest span of 23 ft (7 m) and a deck 16 ft wide.
Who owns Lacasse LN over Frenchtown IRR Canal 094?
It is owned by the County Highway Agency.