State Route 1 over Gualala River
GoodMendocino County, California · 01-MEN-001-0.01 · Structure no. 10 0181
- Built
- 1958
- 67 years old
- Condition
- Good
- inspected August 2024
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 584 ft
- 5 main spans
- Daily traffic
- 4,200
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 1 over Gualala River is a concrete continuous box beam or girders - multiple carrying State Route 1 over Gualala River in Mendocino County, California. It was built in 1958, so it is 67 years old, older 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 4,200 vehicles a day, roughly 6% of them trucks, projected to reach 4,448 by 2042. The structure is 584 ft (178 m) long and 31 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 | 8 Very Good | No problems noted. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 1 over Gualala River built?
It was built in 1958, making it 67 years old in 2025.
What condition is State Route 1 over Gualala River 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 State Route 1 over Gualala River carry?
About 4,200 vehicles per day (2009 count), of which roughly 6% are trucks.
How long is State Route 1 over Gualala River?
The structure is 584 ft (178 m) long with a longest span of 130 ft (39.6 m) and a deck 31 ft wide.
Who owns State Route 1 over Gualala River?
It is owned by the State Highway Agency.