Skip to Content
Streetsblog New York City home
Streetsblog New York City home
Log In
Bicycle Infrastructure

Marin County Opens New Tunnel For Biking, Walking and Rolling

Hundreds of cyclists and pedestrians -- and more than a few elected officials -- turned out on Friday afternoon last week to cut the ribbon on an impressive piece of infrastructure for human-powered travel -- the long-awaited Cal Park Tunnel in Marin County, California.

The project has been talked about since the late 1970s and in active development for the last 12 years. For Marin cyclists, the 1.2 mile path/tunnel combo adds a critical, safe link to the north-south bikeway that will eventually run from the Golden Gate Bridge to Cloverdale in Sonoma County.  It is expected to shave nearly 15 minutes off of trips and serve up to 800,000 riders a year. And just as important: The rail right-of-way has been maintained so that in the future, SMART light rail vehicles can use the tunnel too.

The Cal Park Tunnel has some top-notch features: ample lighting, cell phone reception, emergency phone call boxes, a ventilation system and smooth pavement.  To read up on loads more history of the tunnel and information, check out Streetsblog SF's great recap from last week.

Stay in touch

Sign up for our free newsletter

More from Streetsblog New York City

Thursday’s Headlines: Janno’s Speaking Edition

Local news outlets had a field day after MTA CEO Janno Lieber reiterated his longstanding skepticism of Zohran Mamdani's free buses platform. Plus more news.

October 30, 2025

Decision 2025: Ben Chou Hopes to Unseat Vickie Paladino on Street Safety

Chou, who grew up biking in and around the district, called out his opponent's anti-bike "fear-mongering."

October 30, 2025

Vision Zero Hero! Former FDNY Commish Wants Agency To Join the Safe Streets Fight

Former FDNY Commissioner wants the agency to stop taking a back seat on street safety.

October 30, 2025

Crunching Numbers to Curb Crashes: Using Federal Data to Make Our Roads Safer

Upholding federal data transparency is key to understanding and reversing the alarming level of crashes, fatalities, and strained infrastructure. Here's where we have more work to do.

October 30, 2025

After Dismissing Streetsblog’s Reporting, FDNY Simplifies Rules for E-Bike Charging Stations … That Streetsblog Exposed

The FDNY changed its guidelines in the middle of a City Council hearing where it faced questions about delays to the program.

October 29, 2025

Unfinished Astoria Bike Lane Languishes As Judge Delays Lawsuit Ruling

The completion of Astoria's 31st Street protected bike lane may get pushed to next year if Judge Cheree Buggs doesn't make up her mind soon.

October 29, 2025
See all posts