Road M1 over Salmon Creek
GoodLake County, California · N. of Lake Pillsbury · Structure no. 050854000001017
- Built
- 1976
- 49 years old
- Condition
- Good
- inspected August 2023
- Type
- Slab
- Concrete
- Length
- 107 ft
- 1 main span
- Daily traffic
- 318
- 1992 count
- Owner
- Federal
- U.S. Forest Service
About this bridge
Road M1 over Salmon Creek is a concrete slab carrying Road M1 over Salmon Creek in Lake County, California. It was built in 1976, so it is 49 years old, younger than the California average of 54.8 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 318 vehicles a day, roughly 3% of them trucks, projected to reach 477 by 2045. The structure is 107 ft (32.5 m) long and 25 ft wide. If it were closed, the detour would be 98.2 mi (158 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 | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| 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 Road M1 over Salmon Creek built?
It was built in 1976, making it 49 years old in 2025.
What condition is Road M1 over Salmon 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 2023.
How much traffic does Road M1 over Salmon Creek carry?
About 318 vehicles per day (1992 count), of which roughly 3% are trucks.
How long is Road M1 over Salmon Creek?
The structure is 107 ft (32.5 m) long with a longest span of 42 ft (12.8 m) and a deck 25 ft wide.
Who owns Road M1 over Salmon Creek?
It is owned by the U.S. Forest Service.