State Route 1 over Coyote Creek
FairMarin County, California · 04-MRN-001-0.42 · Structure no. 27 0018
- Built
- 1954
- 71 years old
- Condition
- Fair
- inspected May 2024
- Type
- Slab
- Concrete Continuous
- Length
- 102 ft
- 5 main spans
- Daily traffic
- 30,500
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 1 over Coyote Creek is a concrete continuous slab carrying State Route 1 over Coyote Creek in Marin County, California. It was built in 1954, so it is 71 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 30,500 vehicles a day, roughly 2% of them trucks, projected to reach 45,841 by 2042. The structure is 102 ft (31.2 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 1 over Coyote Creek built?
It was built in 1954, making it 71 years old in 2025.
What condition is State Route 1 over Coyote 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 2024.
How much traffic does State Route 1 over Coyote Creek carry?
About 30,500 vehicles per day (2020 count), of which roughly 2% are trucks.
How long is State Route 1 over Coyote Creek?
The structure is 102 ft (31.2 m) long with a longest span of 20 ft (6.1 m) and a deck 33 ft wide.
Who owns State Route 1 over Coyote Creek?
It is owned by the State Highway Agency.