S 43 over Lamarche Creek
GoodDeer Lodge County, Montana · 14M NW Wise River · Structure no. P00046050+02071
- Built
- 1941
- 84 years old
- Condition
- Good
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 81 ft
- 3 main spans
- Daily traffic
- 485
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S 43 over Lamarche Creek is a wood or timber stringer/multi-beam or girder carrying S 43 over Lamarche Creek in Deer Lodge County, Montana. It was built in 1941, so it is 84 years old, older than the Montana average of 47 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 485 vehicles a day, roughly 7% of them trucks, projected to reach 509 by 2043. The structure is 81 ft (24.7 m) long and 26 ft wide. If it were closed, the detour would be 123.7 mi (199 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S 43 over Lamarche Creek built?
It was built in 1941, making it 84 years old in 2025.
What condition is S 43 over Lamarche Creek in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2024.
How much traffic does S 43 over Lamarche Creek carry?
About 485 vehicles per day (2023 count), of which roughly 7% are trucks.
How long is S 43 over Lamarche Creek?
The structure is 81 ft (24.7 m) long with a longest span of 31 ft (9.4 m) and a deck 26 ft wide.
Who owns S 43 over Lamarche Creek?
It is owned by the State Highway Agency.