US Highway 101 over North San Pedro Road
FairMarin County, California · 04-MRN-101-12.69-SRF · Structure no. 27 0014
- Built
- 1979
- 46 years old, rebuilt 1987
- Condition
- Fair
- inspected March 2021
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 175 ft
- 2 main spans
- Daily traffic
- 180,000
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
US Highway 101 over North San Pedro Road is a prestressed concrete continuous box beam or girders - multiple carrying US Highway 101 over North San Pedro Road in Marin County, California. It was built in 1979 and reconstructed in 1987, so it is 46 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 180,000 vehicles a day, projected to reach 262,761 by 2041. The structure is 175 ft (53.3 m) long and 151 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US Highway 101 over North San Pedro Road built?
It was built in 1979, making it 46 years old in 2025. It was reconstructed in 1987.
What condition is US Highway 101 over North San Pedro Road 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 March 2021.
How much traffic does US Highway 101 over North San Pedro Road carry?
About 180,000 vehicles per day (2009 count).
How long is US Highway 101 over North San Pedro Road?
The structure is 175 ft (53.3 m) long with a longest span of 87 ft (26.5 m) and a deck 151 ft wide.
Who owns US Highway 101 over North San Pedro Road?
It is owned by the State Highway Agency.