Second and Fourth Street Intersection Improvement Project and Latest Concept Design

Fourth Street, or the “Miracle Mile,” links San Rafael to San Anselmo and West Marin. While a retail hub downtown, it shifts west into a six-lane arterial handling 20,000 vehicles daily. Built mid-20th century, the corridor is outdated, with obsolete signals and non-ADA-compliant pedestrian access. The complex Fourth and Second Street intersection causes delays and confusion. This improvement project will streamline traffic, enhance pedestrian, bike, and transit access, and upgrade infrastructure, including a Class IV bikeway, accessibility, drainage, and electrical systems. View the latest concept design below.

LEARN MORE ABOUT THE PROJECT HERE