Wilson Hill RD over Arroyo Sausal Tributary
GoodMarin County, California · 0.22 MI W Pt Rys-Petlma R · Structure no. 27C0105
- Built
- 1928
- 97 years old
- Condition
- Good
- inspected July 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 27 ft
- 3 main spans
- Daily traffic
- 330
- 1973 count
- Owner
- County
- County Highway Agency
About this bridge
Wilson Hill RD over Arroyo Sausal Tributary is a concrete continuous culvert carrying Wilson Hill RD over Arroyo Sausal Tributary in Marin County, California. It was built in 1928, so it is 97 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 330 vehicles a day, roughly 2% of them trucks, projected to reach 605 by 2044. The structure is 27 ft (8.2 m) long and 27 ft wide. If it were closed, the detour would be 18 mi (29 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Wilson Hill RD over Arroyo Sausal Tributary built?
It was built in 1928, making it 97 years old in 2025.
What condition is Wilson Hill RD over Arroyo Sausal Tributary 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 July 2024.
How much traffic does Wilson Hill RD over Arroyo Sausal Tributary carry?
About 330 vehicles per day (1973 count), of which roughly 2% are trucks.
How long is Wilson Hill RD over Arroyo Sausal Tributary?
The structure is 27 ft (8.2 m) long with a longest span of 9 ft (2.7 m) and a deck 27 ft wide.
Who owns Wilson Hill RD over Arroyo Sausal Tributary?
It is owned by the County Highway Agency.