Lucas Valley Road over Miller Creek
GoodMarin County, California · 1.7 MI W of SR 101 · Structure no. 27C0016
- Built
- 1961
- 64 years old
- Condition
- Good
- inspected August 2023
- Type
- Slab
- Concrete Continuous
- Length
- 132 ft
- 4 main spans
- Daily traffic
- 1,000
- 1975 count
- Owner
- County
- County Highway Agency
About this bridge
Lucas Valley Road over Miller Creek is a concrete continuous slab carrying Lucas Valley Road over Miller Creek in Marin County, California. It was built in 1961, so it is 64 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 1,000 vehicles a day, roughly 3% of them trucks, projected to reach 3,272 by 2041. The structure is 132 ft (40.3 m) long and 37 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Lucas Valley Road over Miller Creek built?
It was built in 1961, making it 64 years old in 2025.
What condition is Lucas Valley Road over Miller 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 August 2023.
How much traffic does Lucas Valley Road over Miller Creek carry?
About 1,000 vehicles per day (1975 count), of which roughly 3% are trucks.
How long is Lucas Valley Road over Miller Creek?
The structure is 132 ft (40.3 m) long with a longest span of 32 ft (9.8 m) and a deck 37 ft wide.
Who owns Lucas Valley Road over Miller Creek?
It is owned by the County Highway Agency.