As part of the San Mateo 101 Express Lanes Project, Caltrans will be replacing a total of six overhead sign structures (that span the width of one side of the freeway, from the shoulder to the median) on U.S. 101. The first step of this work is to safely remove the sign structures and install temporary orange roadside signs along the freeway shoulder. Due to the large size of these sign structures, it is necessary to close one direction of the freeway at a time.
Caltrans completed the removal of the first five overhead sign structures and installed temporary orange roadside signs along the freeway shoulder on U.S. 101. This work required construction crews to close one direction of the freeway at a time between Millbrae Avenue in the City of Millbrae and South Airport Boulevard in the City of South San Francisco for five nights.
An additional overnight closure on Northbound U.S. 101 is required to remove the remaining overhead sign structure on U.S. 101 between East Hillsdale Boulevard and SR-92, in/near the cities of San Mateo and Foster City. This overnight closure is planned to occur Sunday, April 4th, from 11 pm to Monday, April 5th at 4 am.