The Ark
SUBSCRIBE
The Ark
SUBSCRIBE

Ex-mayor pitches pedestrian tunnel to trail near Del Mar

"Light bulb moment" envisions 22-foot connection between neighborhoods and Old Rail Trail, but councilmembers want traffic reduction first.

VIA ANDREW THOMPSONTiburon resident Andrew Thompson is proposing a pedestrian tunnel, as depicted in this rendering, that would travel underneath Tiburon Boulevard and connect the Old Rail Trail with Reed Heights-Tiburon Knolls and Del Mar neighborhoods and Del Mar Middle School.
Francisco Martinez
By FRANCISCO MARTINEZ · 1 min read

A former Tiburon mayor is pitching a new idea he says could reduce traffic congestion and increase safety along Tiburon Boulevard: a pedestrian and bike tunnel that would run underneath the road and connect the Old Rail Trail to the Del Mar Middle School tennis courts, where it would then meet an existing pedestrian path that leads to the Reed Heights-Tiburon Knolls and Del Mar neighborhoods.

Andrew Thompson said he has spent about seven months talking about the idea with neighbors, town staff and Reed Union School District officials, as well as a tunnel-construction company headed by a Tiburon resident, though he declined to name the company.

For now, the idea is just that — a suggestion, both Thompson and Town Manager Greg Chanis said, with Chanis noting the town is treating the idea like all resident-submitted traffic ideas, including forwarding it to Parametrix, a consultant working on a traffic study of Tiburon Boulevard, Paradise Drive and Trestle Glen Boulevard. A draft of the study is expected to be presented to the Town Council in November.

Read the complete story in our e-edition, or SUBSCRIBE NOW for home delivery and access to the digital replica.

Comment on this article on Nextdoor.

A version of this story appeared in the Sept. 10, 2025, print edition of The Ark. See something wrong? Request a correction.
Add The Ark to Google Preferred Sources
Recent Stories
Belvedere parks panel makes Cliff Lane path to the shore its 2027 focus Tiburon crews box in downtown drains to keep tidewater off streets Belvedere painter Gordon Studer among 8 peninsula artists at ICB’s Big Open A former Wall Street banker finds her pace in Tiburon Tiburon dances in the light at fifth annual Diwali celebration
In print every Wednesday
Front page of The Ark, Wednesday, November 11 Nov. 11, 2026 E-EDITION
The Ark in your inbox

Local news from Tiburon, Belvedere and Strawberry, delivered by email.

Support The Ark’s commitment to high-impact community journalism.

The Ark, named the nation's best small community weekly for 2026, is dedicated to delivering investigative, accountability journalism with a mission to increase civic engagement and participation by providing the knowledge that can help sculpt the community and change lives. Your support makes this possible.

SUBSCRIBE Make a contribution