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

Cough, Cough: Adams Administration Hands Largest Ever Idling Law Exemption to NJ Charter Bus Company

Academy Bus Lines requested the exemption — the largest in DEP's history — after receiving more than $500,000 in idling violations. But there is some good news.

December 19, 2025

Hochul Vetoes Bill Mandating Two Operators on Most Subway Trains

The veto from Hochul came over the concerns of organized labor who saw the legislation as a way to make subway travel safer.

December 19, 2025

Pedestrian Killed by Hit-and-Run Driver on Crowded Lower East Side Street

The driver kept going. EMTs took the badly injured woman to Bellevue Hospital, where she died.

December 19, 2025

NJ Legislature Poised to Pass Victim-Blaming E-Bike Restrictions

An e-bike registration bill is speeding through the New Jersey Legislature after several crashes in which drivers killed young cyclists.

December 19, 2025

Friday’s Headlines: Streets Master Plan Edition

Speaker Adrienne Adams explains why she didn't bother holding Mayor Adams accountable for following the law. Plus other news.

December 19, 2025

Streetsblog’s ‘Car-Free Carolers’ Bring the Joy, Mirth and Ho-Ho-Hope to this Holiday Season

Streetsblog's singers are back, belting out their parody classics to make a serious point: New York's roadways don't have to be dangerous places for kids and lungs, but can be joyous spaces for people to walk around, shop, eat or just ... hang out.

December 18, 2025
See all posts