US Highway 101 over Copeland Creek
FairSonoma County, California · 04-SON-101-13.51-RNPK · Structure no. 20 0015
- Built
- 1956
- 69 years old, rebuilt 2011
- Condition
- Fair
- inspected April 2024
- Type
- Slab
- Concrete Continuous
- Length
- 32 ft
- 2 main spans
- Daily traffic
- 92,000
- 2014 count
- Owner
- State
- State Highway Agency
About this bridge
US Highway 101 over Copeland Creek is a concrete continuous slab carrying US Highway 101 over Copeland Creek in Sonoma County, California. It was built in 1956 and reconstructed in 2011, so it is 69 years old, older 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 170,145 by 2046. The structure is 32 ft (9.8 m) long and 141 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US Highway 101 over Copeland Creek built?
It was built in 1956, making it 69 years old in 2025. It was reconstructed in 2011.
What condition is US Highway 101 over Copeland Creek 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 Copeland Creek carry?
About 92,000 vehicles per day (2014 count), of which roughly 6% are trucks.
How long is US Highway 101 over Copeland Creek?
The structure is 32 ft (9.8 m) long with a longest span of 15 ft (4.7 m) and a deck 141 ft wide.
Who owns US Highway 101 over Copeland Creek?
It is owned by the State Highway Agency.