Sir Fran Drake Blv over State Route 580
GoodMarin County, California · 04-MRN-580-3.29-SRF · Structure no. 27 0074
- Built
- 1957
- 68 years old
- Condition
- Good
- inspected May 2024
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 672 ft
- 4 main spans
- Daily traffic
- 51,000
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
Sir Fran Drake Blv over State Route 580 is a concrete continuous box beam or girders - multiple carrying Sir Fran Drake Blv over State Route 580 in Marin County, California. It was built in 1957, so it is 68 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 51,000 vehicles a day, roughly 4% of them trucks, projected to reach 80,000 by 2045. The structure is 672 ft (204.9 m) long and 33 ft wide. If it were closed, the detour would be 5 mi (8 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Sir Fran Drake Blv over State Route 580 built?
It was built in 1957, making it 68 years old in 2025.
What condition is Sir Fran Drake Blv over State Route 580 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 May 2024.
How much traffic does Sir Fran Drake Blv over State Route 580 carry?
About 51,000 vehicles per day (2021 count), of which roughly 4% are trucks.
How long is Sir Fran Drake Blv over State Route 580?
The structure is 672 ft (204.9 m) long with a longest span of 105 ft (32 m) and a deck 33 ft wide.
Who owns Sir Fran Drake Blv over State Route 580?
It is owned by the State Highway Agency.