U.S. Highway 101 over Sixth Street
FairSonoma County, California · 04-SON-101-20.20-SRO · Structure no. 20 0285
- Built
- 2009
- 16 years old
- Condition
- Fair
- inspected August 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 92 ft
- 1 main span
- Daily traffic
- 96,000
- 2016 count
- Owner
- State
- State Highway Agency
About this bridge
U.S. Highway 101 over Sixth Street is a prestressed concrete box beam or girders - multiple carrying U.S. Highway 101 over Sixth Street in Sonoma County, California. It was built in 2009, so it is 16 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 5 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 96,000 vehicles a day, roughly 6% of them trucks, projected to reach 195,814 by 2046. The structure is 92 ft (28.1 m) long and 134 ft wide. If it were closed, the detour would be 0.6 mi (1 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was U.S. Highway 101 over Sixth Street built?
It was built in 2009, making it 16 years old in 2025.
What condition is U.S. Highway 101 over Sixth Street 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 August 2024.
How much traffic does U.S. Highway 101 over Sixth Street carry?
About 96,000 vehicles per day (2016 count), of which roughly 6% are trucks.
How long is U.S. Highway 101 over Sixth Street?
The structure is 92 ft (28.1 m) long with a longest span of 89 ft (27.2 m) and a deck 134 ft wide.
Who owns U.S. Highway 101 over Sixth Street?
It is owned by the State Highway Agency.