Wolfback Ridge RD over U.S. Highway 101
GoodMarin County, California · 04-MRN-101-1.52-SAUS · Structure no. 27 0066
- Built
- 1954
- 71 years old
- Condition
- Good
- inspected May 2024
- Type
- Tee Beam
- Concrete Continuous
- Length
- 314 ft
- 6 main spans
- Daily traffic
- 2,512
- 2003 count
- Owner
- State
- State Highway Agency
About this bridge
Wolfback Ridge RD over U.S. Highway 101 is a concrete continuous tee beam carrying Wolfback Ridge RD over U.S. Highway 101 in Marin County, California. It was built in 1954, so it is 71 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 2,512 vehicles a day, roughly 2% of them trucks, projected to reach 2,914 by 2042. The structure is 314 ft (95.7 m) long and 35 ft wide. If it were closed, the detour would be 3.1 mi (5 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 Wolfback Ridge RD over U.S. Highway 101 built?
It was built in 1954, making it 71 years old in 2025.
What condition is Wolfback Ridge RD over U.S. 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 2024.
How much traffic does Wolfback Ridge RD over U.S. Highway 101 carry?
About 2,512 vehicles per day (2003 count), of which roughly 2% are trucks.
How long is Wolfback Ridge RD over U.S. Highway 101?
The structure is 314 ft (95.7 m) long with a longest span of 69 ft (21 m) and a deck 35 ft wide.
Who owns Wolfback Ridge RD over U.S. Highway 101?
It is owned by the State Highway Agency.