In 2019, Caltrans broke ground on its multi-year, multi-agency San Mateo 101 Express Lanes Project, which aims to reduce traffic congestion and encourage carpooling and transit use on U.S. Highway 101 in San Mateo County. The project will create 22 miles of express lanes on U.S. Highway 101 from I-380 in San Bruno to the San Mateo County/Santa Clara County border. The San Mateo 101 Express Lanes will then seamlessly connect to the express lanes being constructed in Santa Clara County.
As the project gets closer to our City, Public Works Department staff are working with Caltrans on the relocation of three sections of sound wall adjacent to northbound US Highway 101. The sound walls will be reconstructed at their existing lengths and heights.