U.S. Highway 101 over Rattlesnake Creek
FairMendocino County, California · 01-MEN-101-R83.99 · Structure no. 10 0029
- Built
- 1952
- 73 years old
- Condition
- Fair
- inspected April 2024
- Type
- Arch - Deck
- Concrete
- Length
- 44 ft
- 2 main spans
- Daily traffic
- 6,200
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
U.S. Highway 101 over Rattlesnake Creek is a concrete arch - deck carrying U.S. Highway 101 over Rattlesnake Creek in Mendocino County, California. It was built in 1952, so it is 73 years old, older than the California average of 54.8 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 6,200 vehicles a day, roughly 19% of them trucks, projected to reach 8,263 by 2042. The structure is 44 ft (13.4 m) long. If it were closed, the detour would be 42.3 mi (68 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 |
|---|---|---|
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was U.S. Highway 101 over Rattlesnake Creek built?
It was built in 1952, making it 73 years old in 2025.
What condition is U.S. Highway 101 over Rattlesnake Creek 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 April 2024.
How much traffic does U.S. Highway 101 over Rattlesnake Creek carry?
About 6,200 vehicles per day (2009 count), of which roughly 19% are trucks.
How long is U.S. Highway 101 over Rattlesnake Creek?
The structure is 44 ft (13.4 m) long with a longest span of 18 ft (5.5 m).
Who owns U.S. Highway 101 over Rattlesnake Creek?
It is owned by the State Highway Agency.