Old Redwood HWY N over US Highway 101
FairSonoma County, California · 04-SON-101-7.65-PET · Structure no. 20 0291
- Built
- 2014
- 11 years old
- Condition
- Fair
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 262 ft
- 2 main spans
- Daily traffic
- 6,000
- 2014 count
- Owner
- State
- State Highway Agency
About this bridge
Old Redwood HWY N over US Highway 101 is a prestressed concrete stringer/multi-beam or girder carrying Old Redwood HWY N over US Highway 101 in Sonoma County, California. It was built in 2014, so it is 11 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 6,000 vehicles a day, roughly 3% of them trucks, projected to reach 8,189 by 2046. The structure is 262 ft (79.8 m) long and 86 ft wide. If it were closed, the detour would be 3.1 mi (5 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 Old Redwood HWY N over US Highway 101 built?
It was built in 2014, making it 11 years old in 2025.
What condition is Old Redwood HWY N over US Highway 101 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 April 2024.
How much traffic does Old Redwood HWY N over US Highway 101 carry?
About 6,000 vehicles per day (2014 count), of which roughly 3% are trucks.
How long is Old Redwood HWY N over US Highway 101?
The structure is 262 ft (79.8 m) long with a longest span of 133 ft (40.6 m) and a deck 86 ft wide.
Who owns Old Redwood HWY N over US Highway 101?
It is owned by the State Highway Agency.