It then heads northward through San Mateo County as it enters Woodside, where it intersects SR 35, also known as Skyline Boulevard, and interchanges with Interstate 280 (California).
It then heads northward through San Mateo County crossing the Santa Cruz Mountains. As it enters Woodside, where it intersects SR 35, also known as Skyline Boulevard, and interchanges with Interstate 280 (California).