Officials warn Tiburon Boulevard bike-lane plan risks bus stops, traffic and safety

Cyclists ride down Greenwood Beach Road, parallel to Tiburon Boulevard, toward Blackie’s Pasture and the Old Rail Trail on May 4. Local officials say bike traffic is better suited to the street than out on Tiburon Boulevard, where as part of its 2026 project to rehabilitate and repave the road, Caltrans wants to create protected bike lanes on the north and south side of the road from Highway 101 to Trestle Glen Boulevard. (Leo Leung / For The Ark)

Three local agencies say Caltrans’ planned bike lanes along Tiburon Boulevard will eliminate four school-bus stops, jam up traffic and endanger cyclists, adding to mounting criticism of the project’s design and communication process.

The Reed Union School District, Marin Transit and the Tiburon Peninsula Traffic Alliance have all submitted letters opposing aspects of the bike lanes planned between Blackfield Drive and Trestle Glen Boulevard.

In her April 15 letter, Reed district Superintendent Kimberly McGrath said the plan would “imperil bus transportation for a number of students and potentially encourage” them to bike what she calls “a busy transit corridor when a safer route is currently available to all bikes along Greenwood Beach Road.”

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