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

Council Leaders Push DOT In Both Directions On Streets Master Plan Goals

Transportation Chair Shaun Abreu is passionate about bus lanes and bike lanes. Finance Chair Linda Lee? Not so much.

March 18, 2026

Albany Pols Seek Transparency From Insurance Giants As Hochul Pushes Premium Cuts

Assembly Member Jeffrey Dinowitz and state Sen. Jamaal Bailey have stepped up their oversight of — and concern about — Gov. Hochul's auto insurance scheme.

Mayor Mamdani’s Daylighting Budget Covers Tiny Fraction of the City

The funding is nowhere near enough to bring daylighting citywide as Mayor Mamdani promised to do on the campaign trail.

March 18, 2026

Wednesday’s Headlines: Speeding is No Joke Edition

Our editor-in-chief has some choice words for the New York Post in our latest video. Plus the news.

March 18, 2026

MTA’s Lieber Asks City to Put More Cops on Bus Lane Enforcement

Lieber told City Council members he wants more "dedicated funding for traffic enforcement to keep the [bus] lanes clear of private vehicles."

March 17, 2026

Brooklyn Residents: Keep Historic Wood Bridge For Pedestrians And Cyclists Only!

As the Department of Transportation is set to reopen the Carroll Street Bridge, locals want it to only reopen to pedestrians and cyclists.

March 17, 2026
See all posts