The 4CP will document community-identified projects and near-term priorities to address transportation barriers and improve quality of life in the communities adjacent to I-238 and I-580 between I-880 and Castro Valley BART.

This map shows the boundaries of 4CP study area and highlights key corridors and intersections that may be a focus of the plan.

Map showing the 4CP project plan area, including communities adjacent to 238 and 580 between 880 and Castro Valley BART (about a 3.5 mile radius across). This area includes parts of San Leandro, Ashland, Castro Valley, San Lorenzo, Cherryland, and Hayward.


To learn more about the 4CP, please visit Alameda CTC's project website.

Participate Today!

We want to hear from you! Community voices are at the heart of the 4CP – your project ideas and priorities will inform the 4CP’s ultimate recommendations.

Please share your thoughts on the map and take the survey below to describe your experiences traveling in the study area and help inform the direction of the 4CP.