U.S. Highway 101 over N Branch Gallinas Creek
FairMarin County, California · 04-MRN-101-13.99-SRF · Structure no. 27 0006
- Built
- 1951
- 74 years old, rebuilt 1961
- Condition
- Fair
- inspected March 2021
- Type
- Culvert
- Concrete Continuous
- Length
- 43 ft
- 3 main spans
- Daily traffic
- 159,000
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
U.S. Highway 101 over N Branch Gallinas Creek is a concrete continuous culvert carrying U.S. Highway 101 over N Branch Gallinas Creek in Marin County, California. It was built in 1951 and reconstructed in 1961, so it is 74 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 6 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 159,000 vehicles a day, roughly 4% of them trucks, projected to reach 235,301 by 2043. The structure is 43 ft (13.1 m) long and 157 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was U.S. Highway 101 over N Branch Gallinas Creek built?
It was built in 1951, making it 74 years old in 2025. It was reconstructed in 1961.
What condition is U.S. Highway 101 over N Branch Gallinas 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 March 2021.
How much traffic does U.S. Highway 101 over N Branch Gallinas Creek carry?
About 159,000 vehicles per day (2009 count), of which roughly 4% are trucks.
How long is U.S. Highway 101 over N Branch Gallinas Creek?
The structure is 43 ft (13.1 m) long with a longest span of 13 ft (4 m) and a deck 157 ft wide.
Who owns U.S. Highway 101 over N Branch Gallinas Creek?
It is owned by the State Highway Agency.