Article Source: CalTrans
Project construction from Whipple Avenue (in Redwood City) to I-380 (in South San Francisco) in San Mateo County is underway! Caltrans is constructing express lanes on U.S. 101 from the San Mateo County/Santa Clara County line to I-380 in South San Francisco. Construction completion anticipated in 2022.
Construction Update – Week of February 16th
North of Whipple Avenue: This week, construction activities on U.S. 101 from Whipple Avenue (in Redwood City) to I-380 (in South San Francisco) will include removing vegetation, installing a Smart Traffic System of changeable message signs placed in the construction zone that shows real-time traffic conditions, installing environmentally-sensitive area fencing, and temporary freeway striping. This work will occur on the freeway lanes, shoulders, and ramps. See below for more information about those activities.
Freeway Lane Closures: This week, nightly freeway lane closures will begin on northbound and southbound U.S. 101 from 10:00 PM – 5:30 AM, Sunday through Thursday night. Expect delays below 15 minutes from 10:00 PM – 6:00 AM. Up to 3 lanes may be closed each night.
Freeway Ramp Closures: Temporary, nightly ramp closures will occur in/near Redwood City, San Carlos, San Mateo, San Bruno, and South San Francisco. Ramp closures could occur on both the northbound and southbound directions of the freeway. However, consecutive interchanges for northbound and southbound ramps will not be closed at the same time.
Short-Term nighttime ramp closures are possible this week at the following locations (listed from south to north). Check signs for exact closure times and locations.
South of Whipple Ave: This week, construction activities on U.S. 101 from San Antonio Road (in Palo Alto) to Whipple Avenue (in Redwood City) will include minor construction activities to connect to existing electrical and install median signs. This will include work on the freeway median, shoulders, and ramps. Delays are not anticipated for this work. Short-Term nighttime ramp closures are possible this week at the following location. Check signs for exact closure times and locations.
Upcoming Construction: Future construction activities for the next few weeks will include continuing vegetation removal activities, installing erosion control protection, installing environmentally-sensitive area fencing, temporary freeway striping, setting up a Smart Traffic System, and installing construction/detour signs north of Whipple Avenue. In addition, sign installation, permanent striping, and erosion control hydroseeding will occur south of Whipple Ave.
All construction activities are subject to change without notice.
For questions during construction, contact the Caltrans Public Information Officer:
Alejandro Lopez at (510) 286-4948 or firstname.lastname@example.org.