San Anselmo RD over US Highway 101
GoodSan Luis Obispo County, California · 05-SLO-101-46.87-ATAS · Structure no. 49 0136
- Built
- 1966
- 59 years old
- Condition
- Good
- inspected May 2023
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 169 ft
- 2 main spans
- Daily traffic
- 4,000
- 2005 count
- Owner
- State
- State Highway Agency
About this bridge
San Anselmo RD over US Highway 101 is a concrete continuous box beam or girders - multiple carrying San Anselmo RD over US Highway 101 in San Luis Obispo County, California. It was built in 1966, so it is 59 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 4,000 vehicles a day, roughly 8% of them trucks, projected to reach 6,340 by 2043. The structure is 169 ft (51.5 m) long and 37 ft wide. If it were closed, the detour would be 5 mi (8 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was San Anselmo RD over US Highway 101 built?
It was built in 1966, making it 59 years old in 2025.
What condition is San Anselmo RD over US Highway 101 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 May 2023.
How much traffic does San Anselmo RD over US Highway 101 carry?
About 4,000 vehicles per day (2005 count), of which roughly 8% are trucks.
How long is San Anselmo RD over US Highway 101?
The structure is 169 ft (51.5 m) long with a longest span of 84 ft (25.6 m) and a deck 37 ft wide.
Who owns San Anselmo RD over US Highway 101?
It is owned by the State Highway Agency.