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2021-02-07-101-express-update

New Videos! Check out the “Videos” tab on 101express.com to hear project team members talk about the need for the project, why express lanes are the solution, how we are building the express lanes, how the express lanes will operate once construction is finished, and more! These 1 to 7-minute videos are part of a series on key project details. Click here to watch!

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Construction Update – Week of February 7th

**Note: Nighttime lane closures and ramp closures may occur Friday night, February 5th to Saturday morning, February 6th. See below for more details.

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 variable toll message sign work 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 on the reconstruction of the sound wall along Bayshore Boulevard (from 2nd Avenue to Dore Avenue) within the City of San Mateo; installation of stormwater drainage systems, permanent concrete barriers, weigh-in-motion systems for measuring vehicle weights, and guardrails; concrete and barrier demolition; grading; stormwater drainage system maintenance; overhead sign work; shoulder excavation; landscaping work; erosion control work; and minor construction activities.

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

Construction crews leveling a section of future roadway

Construction crews leveling a section of future roadway

Sound Wall Work Traffic Control: Construction crews working on the sound wall on Bayshore Boulevard, from 2nd Avenue to Dore Avenue in the City of San Mateo, continue to implement periodic traffic control from 8:00 AM to 5:00 PM, Monday through Friday. Watch for detour signs. After 5:00 PM, the road will be restored to two-way traffic. We estimate this work will conclude in late-February.

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, 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 may occur during the 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.

Nighttime ramp closures: Short-term nighttime ramp closures are possible the week of February 7th  (between Sunday night and Friday morning) in/near the cities of Palo Alto, East Palo Alto, Menlo Park, 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:

  • Northbound University Avenue/Route 109, Northbound U.S. 101 On-Ramp
  • Southbound Route 114 (Willow Avenue), Northbound U.S. 101 On-Ramp
  • Southbound Route 84, Northbound U.S. 101 Connector Ramp
  • Eastbound/Westbound Seaport Boulevard, Northbound U.S. 101 On-Ramp

North of Whipple Avenue:

  • Southbound U.S. 101, Eastbound/Westbound Holly Street Off-Ramp
  • Eastbound Harbor Boulevard, Southbound U.S. 101 On-Ramp
  • Southbound U.S. 101, Eastbound/Westbound Ralston Avenue On/Off-Ramp
  • Southbound U.S. 101, Eastbound/Westbound Route92/Fashion Island Boulevard Connector Ramp
  • Kehoe Avenue, Northbound U.S. 101 On-Ramp
  • Eastbound/Westbound 3rd/4th Avenue, Northbound U.S. 101 On-Ramp
  • Northbound U.S. 101, Eastbound/Westbound 3rd Avenue On/Off-Ramp
  • Eastbound/Westbound 3rd Avenue, Southbound U.S. 101 On-Ramp
  • Southbound U.S. 101, Southbound Poplar Avenue On/Off-Ramp
  • Northbound U.S. 101, Northbound Anza Boulevard On/Off-Ramp
  • Eastbound Millbrae Avenue, Northbound U.S. 101 On-Ramp
  • Northbound U.S. 101, SFO Off-Ramp
  • Southbound U.S. 101, Southbound SFO On/Off-Ramp
  • SFO Domestic Terminals, Southbound U.S. 101 On-Ramp
  • Airport Boulevard, Northbound U.S. 101 On/Off-Ramp
  • Produce Avenue/Airport Boulevard, Southbound U.S. 101 On-Ramp
  • Eastbound/Westbound San Bruno Avenue, Southbound U.S. 101 On-Ramp
  • Northbound U.S. 101, Eastbound San Bruno Avenue Off-Ramp
  • Westbound I-380, Southbound U.S. 101 Connector Ramp
  • Eastbound/Westbound I-380, Northbound U.S. 101 Connector Ramp
  • Eastbound I-380, Southbound U.S. 101 On-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, unless otherwise noted above
  • Will have detour signs posted

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 the installation of variable toll message signs and lighting; erosion control 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 continued work on the section of sound wall being reconstructed in the City of San Mateo; the installation of guardrails, stormwater drainage systems, fencing, and permanent and temporary concrete barriers; shoulder excavation; paving; temporary restriping; landscaping work; erosion control work; overhead sign work; and minor construction activities.

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.