Tomales RD over Stemple Creek
PoorSonoma County, California · 0.9 MI E County Line · Structure no. 20C0116
- Built
- 1970
- 55 years old
- Condition
- Poor
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 60 ft
- 3 main spans
- Daily traffic
- 3,000
- 2015 count
- Owner
- County
- County Highway Agency
About this bridge
Tomales RD over Stemple Creek is a steel continuous stringer/multi-beam or girder carrying Tomales RD over Stemple Creek in Sonoma County, California. It was built in 1970, so it is 55 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 3,000 vehicles a day, roughly 3% of them trucks, projected to reach 3,946 by 2046. The structure is 60 ft (18.3 m) long and 40 ft wide. If it were closed, the detour would be 6.8 mi (11 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 4 Poor | Advanced section loss, deterioration, 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 Tomales RD over Stemple Creek built?
It was built in 1970, making it 55 years old in 2025.
What condition is Tomales RD over Stemple Creek in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in November 2024.
How much traffic does Tomales RD over Stemple Creek carry?
About 3,000 vehicles per day (2015 count), of which roughly 3% are trucks.
How long is Tomales RD over Stemple Creek?
The structure is 60 ft (18.3 m) long with a longest span of 24 ft (7.3 m) and a deck 40 ft wide.
Who owns Tomales RD over Stemple Creek?
It is owned by the County Highway Agency.