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  7. 2021-03-14-101-express-update

2021-03-14-101-express-update

**Note: Daytime ramp closures will take place the week of March 14th in the City of San Mateo. See “Daytime Ramp Closures” below for more details. Overnight ramp closures will also take place the weekend of March 19th (between Friday night and Saturday morning, and Saturday night and Sunday morning) in the City of San Mateo. See “Weekend overnight closures” below for more details. 

Construction Update – Week of March 14th 

South of Whipple Avenue: This week, construction activities on U.S. 101 from San Antonio Road (in Palo Alto) to Whipple Avenue (in Redwood City) include shoulder excavation and minor construction activities.

North of Whipple Avenue: This week, construction activities on U.S. 101 from Whipple Avenue to I-380 (in South San Francisco) include continued work near the completed sections of sound wall on Bayshore Boulevard in the City of San Mateo (more information below); installation of stormwater drainage systems, permanent and temporary concrete barriers, new electrical boxes, lighting, traffic monitoring system components, and guardrails; temporary restriping; concrete and barrier demolition; overhead sign work; landscaping and erosion control work; electrical service work; shoulder excavation; removing temporary concrete barriers; grading; paving; modifying existing electrical cabinets; roadway excavation; stormwater drainage system maintenance; and minor construction activities.

Most of the work will occur on the freeway lanes, shoulders, and ramps, while sound wall work and electrical service work will occur on city streets adjacent to U.S. 101. Construction activities may occur during the day or night, and noise from construction-related sounds such as backup alarms and hammering should be anticipated.

A construction crew member using a roller to compact base material in the freeway 101 shoulder

A construction crew member using a roller to compact base material in the freeway shoulder

Sound Wall Update 

All three sections of sound wall along Bayshore Boulevard, from Newbridge Avenue to just past Dakota Avenue, from 2nd Avenue to Dore Avenue, and from Dore Avenue to East Poplar Avenue, in the City of San Mateo have been rebuilt!

Minor construction activities such as paving and restriping will continue near the completed sections of sound wall on Bayshore Boulevard in the City of San Mateo during the week of March 14th. This work will require temporary lane closures (one-way traffic) on Bayshore Boulevard between 7:00 AM to 5:00 PM, Monday through Friday. Cones and flaggers will safely direct traffic around closures. On-street parking along Bayshore Boulevard will be unavailable during this work. All sound wall-related work is anticipated to be completed next week (by March 19th).

OVERNIGHT FREEWAY CLOSURES FOR SIGN REMOVAL: In the coming weeks, an additional overnight closure on U.S. 101 will be required to remove an overhead sign structure in the City of San Mateo (between East Hillsdale boulevard and SR-92). Stay tuned to our weekly construction emails and visit the “Upcoming Overnight Closures on U.S. 101” page on 101express.com for updates as we work to finalize the timing for this closure. Thank you for your patience during this time!

Nighttime Freeway Lane Closures: Nightly freeway lane closures may occur on northbound and southbound U.S. 101 from 7:00 PM to 6:30 AM, Saturday 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 may occur during the day or night. Ramp closures could occur in 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.

Daytime ramp closures: Short-term daytime ramp closures are possible the week of March 14th (between Monday morning and Wednesday afternoon) in the City of San Mateo at the following location. Closures will begin after 8:30 AM and end by 4:30 PM. Changeable message signs near the ramps will have exact closure times and locations:

  •  Northbound U.S. 101, Eastbound Dore Avenue Off-Ramp

Nighttime ramp closures: Short-term nighttime ramp closures are possible the week of March 14th (between Sunday night and Friday morning) in/near the cities of Redwood City, San Carlos, Belmont, San Mateo, Foster City, Burlingame, Millbrae, San Bruno, and South San Francisco at the following locations (listed from south to north). Changeable message signs near the ramps will have exact closure times and locations.

South of Whipple Avenue:

 

  •  Eastbound/Westbound Seaport Boulevard, Northbound U.S. 101 On-Ramp

North of Whipple Avenue:

  •  Westbound Whipple Avenue, Southbound U.S. 101 On-Ramp
  • Eastbound/Westbound Holly Street, Southbound U.S. 101 On/Off-Ramp
  • Westbound Marine Parkway, Northbound U.S. 101 On-Ramp
  • Eastbound/Westbound Ralston Avenue, Southbound U.S. 101 On/Off-Ramp
  • Eastbound East Hillsdale Boulevard, Northbound U.S. 101 On-Ramp (Closures possible starting at 6:00 PM at this location)
  • Southbound U.S. 101, Eastbound/Westbound East Hillsdale Boulevard Off-Ramp
  • Northbound U.S. 101, Eastbound/Westbound East Hillsdale Boulevard Off-Ramp (Closures possible lasting until 7:00 AM at this location)
  • Westbound East Hillsdale Boulevard, Southbound U.S. 101 On-Ramp
  • Westbound East Hillsdale Boulevard, Northbound U.S. 101 On-Ramp
  • Eastbound Route 92, Northbound U.S. 101 Connector Ramp
  • Westbound Route 92, Northbound U.S. 101 Connector Ramp
  • Northbound U.S. 101, Eastbound/Westbound Route 92 Connector Ramp
  • Kehoe Avenue, Northbound U.S. 101 On/Off-Ramp
  • Northbound U.S. 101, Eastbound/Westbound 3rd Avenue Off-Ramp
  • Eastbound/Westbound 3rd/4th Avenue, Northbound U.S. 101 On-Ramp
  • Southbound Poplar Avenue, Southbound U.S. 101 On/Off-Ramp
  • Northbound U.S. 101, Peninsula Avenue Off-Ramp (Closures possible starting at 5:00 PM and lasting until 7:00 AM at this location)
  • Eastbound Millbrae Avenue, Northbound U.S. 101 On-Ramp
  • Westbound Millbrae Avenue, Northbound U.S. 101 On-Ramp
  • Airport Boulevard, Northbound U.S. 101 On-Ramp
  • Eastbound/Westbound San Bruno Avenue, Southbound U.S. 101 On-Ramp

Weekend overnight closures: Short-term nighttime ramp closures are possible the weekend of March 19th (between Friday night and Saturday morning, and Saturday night and Sunday morning) in the City of San Mateo at the following locations (listed from south to north). Changeable message signs near the ramps will have exact closure times and locations.

Weekend of March 19th:

  •  Southbound U.S. 101, Eastbound/Westbound 3rd/4th Avenue Off-Ramp (Closures possible lasting until 7:00 AM at this location on Saturday, March 20th, and until 8:00 AM on Sunday, March 20th)
  • Westbound 3rd Avenue, Southbound U.S. 101 On-Ramp (Closures possible lasting until 8:00 AM at this location on Saturday, March 19th, and until 9:00 AM on Sunday, March 20th)

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, unless otherwise noted above
  • Will have detour signs posted

City Streets: In addition to the sound wall activities described above, work to connect power to overhead signs and freeway lighting will occur on streets in the cities of San Mateo and South San Francisco. 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. Electrical service work may occur in the following areas:

  • 19th Avenue and Fashion Island Boulevard in the City of San Mateo
  • South Amphlett Boulevard and 10th Avenue in the City of San Mateo
  • South Airport Boulevard and Wondercolor Lane in the City of South San Francisco
  • On Wondercolor Lane in the City of South San Francisco

Upcoming Construction (South of Whipple Avenue): Construction activities in the coming weeks on U.S. 101 from San Antonio Road (in Palo Alto) to Whipple Avenue (in Redwood City) will include landscaping work, and minor construction activities.

Upcoming Construction (North of Whipple Avenue): Construction activities in the coming weeks on U.S. 101 from Whipple Avenue to I-380 (in South San Francisco) will include the installation of guardrails, stormwater drainage systems, traffic monitoring system components, lighting, and temporary concrete barriers; grading; temporary restriping; erosion control work; overhead sign work; concrete and barrier demolition; roadway excavation; stormwater drainage system maintenance; electrical service work; and minor construction activities.

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. 

All construction activities are subject to change without notice.

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.

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