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Tiburon council wants clearer answers from traffic study

A new traffic study presented to the Tiburon Town Council lays out options to ease congestion on Tiburon Boulevard, from adaptive signals to a roundabout. Estimated costs per project range up to $20 million.

Francisco Martinez
By FRANCISCO MARTINEZ · 1 min read
PARAMETRIX VIA TOWN OF TIBURONA rendering shows a proposed two-lane roundabout at the intersection of Tiburon Boulevard and Trestle Glen Boulevard, estimated to cost about $20 million. The study found the option would provide the greatest congestion relief at the intersection but would require pedestrians and cyclists to cross two lanes of traffic at a time.

Tiburon’s long-awaited traffic study arrived at the Town Council with reams of data, a list of proposed improvements and cost estimates for major projects — but without the one measure councilmembers said commuters care about most: how much any proposed fix would cut the drive from downtown to the freeway.

The council on March 4 directed consulting firm Parametrix to add that benchmark and sharpen its focus on near-term, high-impact congestion solutions before the study is finalized. The draft covers Tiburon Boulevard from Blackfield Drive to Beach Road, Trestle Glen Boulevard between Tiburon Boulevard and Paradise Drive, and Paradise Drive within town limits.

Mayor Jon Welner said reducing traffic congestion and improving safety are the two priorities the final recommendations should center on.

“We needed a really thoughtful and data-driven report to help us look at the various options; I think this really helps us do that,” Welner said. “I think with the additional questions that have been asked today, we will have a report that will enable us to make some critical decisions.”

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A version of this story appeared in the March 11, 2026, print edition of The Ark. See something wrong? Request a correction.
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