Mendocino Pass RD over Williams Creek
FairMendocino County, California · 8.0 MI E/O Covelo · Structure no. 10C0097
- Built
- 1983
- 42 years old
- Condition
- Fair
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 215 ft
- 3 main spans
- Daily traffic
- 226
- 2011 count
- Owner
- County
- County Highway Agency
About this bridge
Mendocino Pass RD over Williams Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying Mendocino Pass RD over Williams Creek in Mendocino County, California. It was built in 1983, so it is 42 years old, younger 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 6 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 226 vehicles a day, roughly 10% of them trucks, projected to reach 354 by 2046. The structure is 215 ft (65.5 m) long and 35 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mendocino Pass RD over Williams Creek built?
It was built in 1983, making it 42 years old in 2025.
What condition is Mendocino Pass RD over Williams 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 August 2024.
How much traffic does Mendocino Pass RD over Williams Creek carry?
About 226 vehicles per day (2011 count), of which roughly 10% are trucks.
How long is Mendocino Pass RD over Williams Creek?
The structure is 215 ft (65.5 m) long with a longest span of 71 ft (21.6 m) and a deck 35 ft wide.
Who owns Mendocino Pass RD over Williams Creek?
It is owned by the County Highway Agency.