About ACTA/ACTIA

I-580 Castro Valley Interchange Improvement Project Groundbreaking Ceremonty

Optimizing Mobility through Alameda County's Half-Cent Transportation Sales Tax

The Alameda County Transportation Authority (ACTA) was designated as the governing agency to administer and oversee delivery of the Measure B half-cent sales tax transportation projects in Alameda County. Measure B was passed by 56.5% of Alameda County voters in 1986.

The Alameda County Transportation Improvement Authority (ACTIA) was created in 2000, supported by 81.5% of local voters, to administer Measure B funds and to deliver a fresh set of essential transportation improvements and services, while ACTA finalizes the projects promised to voters in 1986.

ACTIA's Expenditure Plan is its guiding document to delivering Measure B projects in Alameda County. For more information, visit Expenditure and Strategic Plans.