Mrshal-Petaluma RD over Salmon Creek
GoodMarin County, California · 6 MI East of SR 1 · Structure no. 27C0113
- Built
- 1931
- 94 years old, rebuilt 1987
- Condition
- Good
- inspected July 2022
- Type
- Tee Beam
- Concrete Continuous
- Length
- 139 ft
- 4 main spans
- Daily traffic
- 400
- 1988 count
- Owner
- County
- County Highway Agency
About this bridge
Mrshal-Petaluma RD over Salmon Creek is a concrete continuous tee beam carrying Mrshal-Petaluma RD over Salmon Creek in Marin County, California. It was built in 1931 and reconstructed in 1987, so it is 94 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 400 vehicles a day, roughly 2% of them trucks, projected to reach 550 by 2044. The structure is 139 ft (42.4 m) long and 36 ft wide. If it were closed, the detour would be 24.9 mi (40 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 Mrshal-Petaluma RD over Salmon Creek built?
It was built in 1931, making it 94 years old in 2025. It was reconstructed in 1987.
What condition is Mrshal-Petaluma RD over Salmon 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 2022.
How much traffic does Mrshal-Petaluma RD over Salmon Creek carry?
About 400 vehicles per day (1988 count), of which roughly 2% are trucks.
How long is Mrshal-Petaluma RD over Salmon Creek?
The structure is 139 ft (42.4 m) long with a longest span of 34 ft (10.4 m) and a deck 36 ft wide.
Who owns Mrshal-Petaluma RD over Salmon Creek?
It is owned by the County Highway Agency.