Alexander RD over Stemple Creek
GoodMarin County, California · 0.39 MI N Tmals-Petlma RD · Structure no. 27C0121
- Built
- 1962
- 63 years old
- Condition
- Good
- inspected July 2024
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 81 ft
- 2 main spans
- Daily traffic
- 60
- 1973 count
- Owner
- County
- County Highway Agency
About this bridge
Alexander RD over Stemple Creek is a prestressed concrete tee beam carrying Alexander RD over Stemple Creek in Marin County, California. It was built in 1962, so it is 63 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 60 vehicles a day, roughly 1% of them trucks, projected to reach 132 by 2042. The structure is 81 ft (24.7 m) long and 29 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Alexander RD over Stemple Creek built?
It was built in 1962, making it 63 years old in 2025.
What condition is Alexander RD over Stemple 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 July 2024.
How much traffic does Alexander RD over Stemple Creek carry?
About 60 vehicles per day (1973 count), of which roughly 1% are trucks.
How long is Alexander RD over Stemple Creek?
The structure is 81 ft (24.7 m) long with a longest span of 39 ft (12 m) and a deck 29 ft wide.
Who owns Alexander RD over Stemple Creek?
It is owned by the County Highway Agency.