Grant ST over Foss Creek
FairSonoma County, California · In Healdsburg · Structure no. 20C0343
- Built
- 1920
- 105 years old
- Condition
- Fair
- inspected May 2023
- Type
- Tee Beam
- Concrete Continuous
- Length
- 37 ft
- 2 main spans
- Daily traffic
- 1,830
- 2015 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Grant ST over Foss Creek is a concrete continuous tee beam carrying Grant ST over Foss Creek in Sonoma County, California. It was built in 1920, so it is 105 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 1,830 vehicles a day, roughly 1% of them trucks, projected to reach 4,101 by 2041. The structure is 37 ft (11.3 m) long and 22 ft wide. If it were closed, the detour would be 123.7 mi (199 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Grant ST over Foss Creek built?
It was built in 1920, making it 105 years old in 2025.
What condition is Grant ST over Foss 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 May 2023.
How much traffic does Grant ST over Foss Creek carry?
About 1,830 vehicles per day (2015 count), of which roughly 1% are trucks.
How long is Grant ST over Foss Creek?
The structure is 37 ft (11.3 m) long with a longest span of 19 ft (5.8 m) and a deck 22 ft wide.
Who owns Grant ST over Foss Creek?
It is owned by the City or Municipal Highway Agency.