US Highway 101 over SR 116 Gravenstein HWY
FairSonoma County, California · 04-SON-101-12.70-COTI · Structure no. 20 0290
- Built
- 2011
- 14 years old
- Condition
- Fair
- inspected April 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 159 ft
- 1 main span
- Daily traffic
- 92,000
- 2016 count
- Owner
- State
- State Highway Agency
About this bridge
US Highway 101 over SR 116 Gravenstein HWY is a prestressed concrete box beam or girders - multiple carrying US Highway 101 over SR 116 Gravenstein HWY in Sonoma County, California. It was built in 2011, so it is 14 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 92,000 vehicles a day, roughly 6% of them trucks, projected to reach 166,227 by 2046. The structure is 159 ft (48.5 m) long and 115 ft wide. If it were closed, the detour would be 2.5 mi (4 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 | 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 SR 116 Gravenstein HWY built?
It was built in 2011, making it 14 years old in 2025.
What condition is US Highway 101 over SR 116 Gravenstein HWY 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 US Highway 101 over SR 116 Gravenstein HWY carry?
About 92,000 vehicles per day (2016 count), of which roughly 6% are trucks.
How long is US Highway 101 over SR 116 Gravenstein HWY?
The structure is 159 ft (48.5 m) long with a longest span of 159 ft (48.5 m) and a deck 115 ft wide.
Who owns US Highway 101 over SR 116 Gravenstein HWY?
It is owned by the State Highway Agency.