Old Gravenstein Hy over Blucher Creek
GoodSonoma County, California · 0.25 MI N of S.H. 116 · Structure no. 20C0004
- Built
- 1925
- 100 years old
- Condition
- Good
- inspected October 2023
- Type
- Tee Beam
- Concrete
- Length
- 67 ft
- 3 main spans
- Daily traffic
- 1,562
- 2015 count
- Owner
- County
- County Highway Agency
About this bridge
Old Gravenstein Hy over Blucher Creek is a concrete tee beam carrying Old Gravenstein Hy over Blucher Creek in Sonoma County, California. It was built in 1925, so it is 100 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 1,562 vehicles a day, roughly 1% of them trucks, projected to reach 2,100 by 2040. The structure is 67 ft (20.4 m) long and 26 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| 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 Old Gravenstein Hy over Blucher Creek built?
It was built in 1925, making it 100 years old in 2025.
What condition is Old Gravenstein Hy over Blucher Creek in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2023.
How much traffic does Old Gravenstein Hy over Blucher Creek carry?
About 1,562 vehicles per day (2015 count), of which roughly 1% are trucks.
How long is Old Gravenstein Hy over Blucher Creek?
The structure is 67 ft (20.4 m) long with a longest span of 22 ft (6.7 m) and a deck 26 ft wide.
Who owns Old Gravenstein Hy over Blucher Creek?
It is owned by the County Highway Agency.