2021-04-25-101-express-update

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. Lanes are expected to open from the San Mateo County/Santa Clara County Line to Redwood City in late-2021 and between Redwood City and I-380 by late-2022.

Construction Update – Week of April 25th

Construction crews demolishing a section of median barrier

2021-04-23 Construction crews demolishing a section of median barrier

Median: Construction crews are working in the freeway median (inside) to install new express lane signs, lighting, and tolling equipment; reconstruct a taller barrier; and more.

This week, work in the median will include installing overhead lighting and sign foundations; reconfiguring existing stormwater drainage systems; grading and paving the new freeway surface; electrical system installation; barrier demolition; asphalt/concrete demolition and grinding; roadway excavation; and saw cutting concrete for stormwater drainage systems.

In the coming weeks, work in the median will include reconfiguring stormwater drainage systems; grading and paving new freeway surface; installing permanent concrete barriers, overhead lighting and sign foundations; barrier demolition between Harbor Boulevard and just north of Route 92, and between Route 92 and 3rd Avenue; saw cutting asphalt/concrete between Route 92 and just north of Broadway Avenue, and between Holly Street and Ralston Avenue; asphalt/concrete demolition and grinding between Route 92 and just south of Kehoe Avenue, and adjacent to I-380; roadway excavation between Whipple Avenue and Holly Street, just north of Route 92, between Route 92 and Kehoe Avenue, between just south of Kehoe Avenue and 3rd Avenue, and adjacent to I-380; and saw cutting for stormwater drainage systems at adjacent to I-380.

Construction crews excavating in the freeway shoulder

2021-04-23 Construction crews excavating in the freeway shoulder

Shoulders: Construction crews are working in the freeway shoulders (outside edge) to remove vegetation, connect auxiliary lanes to create a new lane, restore most existing auxiliary lanes, and replace freeway signs.

This week, work in the shoulder will include the installation of electrical boxes to support lighting and tolling infrastructure in the future express lanes; and installing erosion control devices.

In the coming weeks, shoulder work will include the installation of electrical boxes to support lighting and tolling infrastructure in the future express lanes; installing erosion control devices; and repairing a section of guardrail.

A section of freeway where construction crews removed an overhead sign structure and installed temporary orange roadside signs along the freeway shoulder

2021-04-23 overhead sign structure and installed

Freeway Lanes: Construction crews are working in the freeway lanes to repave and restripe the roadway, and to install detectors.

In the coming weeks, work in the freeway lanes will include the installation of temporary loop detectors, which provide valuable traffic data to Caltrans.

The Northbound U.S. 101, Dore Avenue Off-Ramp after construction crews installed a new stormwater drainage system across the ramp.

2021-04-23 The Northbound U.S. 101, Dore Avenue Off-Ramp after construction

Ramps: Work on freeway ramps is being done to accommodate the new express lane infrastructure. Ramp closures are typically implemented to facilitate work on or adjacent to freeway ramps. See Freeway Ramp Closures below for more information.

In the coming weeks, freeway ramp work will include paving on the Northbound U.S. 101, Kehoe Avenue Off-Ramp. Additional work on local ramps may occur in the future, necessitating ramp closures.

The section of sound wall from Newbridge Avenue to just past Dakota Avenue, adjacent to Bayshore Boulevard in the City of San Mateo.

2021-04-23 The section of sound wall from Newbridge Avenue

City Streets: Project crews continue to work on city streets near the sound wall in the City of San Mateo adjacent to Bayshore Boulevard and to connect the new express lanes infrastructure to the existing grid.

This week, work to connect power to overhead signs and freeway lighting may occur on streets in the cities of San Bruno and San Mateo. Nearby residents and travelers can expect to see crews from 8:00 AM to 5:00 PM, Monday through Friday. This work will produce intermittent low vibrations and construction vehicle noise, and will also require temporary lane closures (one-way traffic). Cones and flaggers will safely direct traffic around closures. This work will also include PG&E energizing utilities, and installing meters and new service locations on city streets adjacent to the freeway.

Pavement restriping near the completed sections of the sound wall occurred during the week of April 18th. The section of Bayshore Boulevard between Rogell Avenue and East Poplar Avenue is temporarily striped, and permanent striping will occur as soon as possible.

Nighttime Freeway Lane Closures: Nightly freeway lane closures may occur on northbound and southbound U.S. 101 from 8:00 PM to 6:30 AM, Sunday night to Friday morning. Due to low traffic volumes, project-related traffic delays are anticipated to be minimal. Caltrans continues to monitor the flow of traffic and make adjustments, as necessary.

Freeway Ramp Closures: Temporary ramp closures in both the northbound and southbound directions of the freeway may occur during the night. However, consecutive interchanges for northbound and southbound ramps will not be closed at the same time.

Nighttime ramp closures: Short-term nighttime ramp closures may occur at the following locations (listed from south to north) during the week of April 25th (between Sunday night and Friday morning), in/near the cities of Redwood City, Foster City, and San Mateo. Changeable message signs near the ramps will have exact closure times and locations.

Eastbound/Westbound Seaport Boulevard, Northbound U.S. 101 On-Ramp
Westbound East Hillsdale Boulevard, Northbound U.S. 101 On-Ramp
Northbound U.S. 101, Eastbound/Westbound Route 92 Connector Ramp

Nighttime ramp closures:

Will be displayed on changeable message signs within the construction zone
Will begin after 7:00 PM and reopen by 6:00 AM
Will have detour signs posted

All construction activities are subject to change without notice.

For questions during construction, contact the Caltrans Public Information Officer:

Alejandro Lopez at (510) 385-6856 or 101express@dot.ca.gov.

Visit our website at 101express.com for more information about the project. Follow us on Twitter @CaltransD4.

If you would like a copy of a prior construction update, please email 101express@dot.ca.gov.

2021-04-25-101-express-update

Construction Update – Week of April 25th

All construction activities are subject to change without notice.

If you would like a copy of a prior construction update, please email 101express@dot.ca.gov.

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