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Major roads projects in Marin County target the most heavily traveled roads in Marin County for repairs, as well as safety and usability improvements for motorists, pedestrians, transit and cyclists.

Priorities for major roads projects are determined by the public works directors of each city, town and the County, working with TAM’s Technical Advisory Committee. The prioritization of Major Roads projects  is based on performance criteria contained in the Sales Tax Expenditure Plan. TAM’s role is to administer the allocation of Measure A funds for major roads projects.

Major roads eligible for funding were identified in the Measure A Expenditure Plan in 2006. Projects that have received funding and are in progress include:

Major roads projects that have been completed include:

View a fact sheet about Major Roads Projects funded by Measure A Transportation Sales Tax.

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Five planning areas were identified for Major Roads Projects and funds are allocated to the planning areas based on a formula weighted 50% by the population of the planning area and 50% by the number of road miles within the limits of the planning areas. This distribution is balanced every six years to address changes in population and road mile figures.

Planning Areas Distribution Based on 50% Population and 50% Lane Miles
Northern Marin 19.9%
Central Marin 25.4%
Southern Marin 20.0%
Ross Valley 21.6%
Western Marin 13.1%

Funds Available for Each Planning Area

(in millions)