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PROJECT INFORMATION CONSTRUCTION UPDATES DOCUMENT LIBRARY PUBLIC MEETINGS FAQ CONTACT

Construction Updates

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For real-time traffic information and lane closures, go to Quickmaps

May 10, 2019

During the month of May, construction will continue in Palo Alto, East Palo Alto, Menlo Park, and Redwood City. Construction activities require temporary lane closures on City streets adjacent to the freeway, occasional nighttime ramp closures (select ramps only), and nighttime lane closures on U.S. 101.

Electrical service work will continue to occur on City Streets adjacent to the freeway to connect power to overhead signs and freeway lighting. This work requires temporary lane closures (one-way traffic). Lane closure(s):
  • information will be displayed on changeable message signs
  • will include traffic cones and flaggers
  • will be temporary but could occur during daytime or nighttime hours
  • could produce intermittent low vibrations and construction vehicle noise

  • Work on the freeway ramps will also continue periodically for restriping, and installing temporary traffic monitoring equipment.

    Ramp closures:

  • will be displayed on changeable message signs
  • will take place at night
  • will last 3 to 8 hours
  • will reopen by 5 a.m. daily
  • will have detour signs posted

  • Ongoing freeway construction activities include:

  • demolishing portions of the existing median barrier
  • removing pavement
  • installing new median barrier
  • installing drainage systems
  • placing temporary concrete barriers on the shoulders

Barrier Install
Construction crews placing temporary median barriers on U.S. 101installing median-barrier-mounted roadway signs

Lane closures occur nightly from Sunday through Thursday. Lanes will reopen by 5 a.m. daily.

April 9, 2019

Construction activities on the U.S. 101 median barrier, freeway shoulders, and ramps are ongoing in Palo Alto, East Palo Alto, Menlo Park, and Redwood City (more details in the updates below). In addition, construction activities will include electrical service work in order to power overhead signs and lighting on the freeway. Crews will be accessing existing electrical service points on local roadways adjacent to the freeway in Menlo Park, East Palo Alto, and Palo Alto. Nearby residents and travelers can expect to see crews working during the day. Traffic cones and flaggers will be used to separate vehicles from construction personnel and equipment. Temporary lane closures are anticipated to occur periodically. Lane closures are not expected to disrupt traffic circulation. Construction noise is expected to be intermittent and limited to low vibrations and construction vehicles. Work at each location is anticipated to take a few days or less.

March 22, 2019

Project construction has begun! Upcoming construction activities include placing temporary concrete barriers, demolishing portions of the existing median barrier, removing pavement, installing temporary traffic monitoring equipment, and restriping the freeway.

Over the next three months, construction activities will take place in Palo Alto, East Palo Alto, Menlo Park, and Redwood City. During this time, construction activities will occur primarily on the shoulders and median of U.S. Highway 101. Closures of select lanes on the freeway will occur nightly between 9 p.m. and 5 a.m. (excluding Friday and Saturday nights). No daytime lane closures are anticipated.

Periodic ramp closures will also occur between Palo Alto and Redwood City. Ramp closures will also occur at night and ramps would be closed 3 to 8 hours. Ramps will re-open by 5 a.m. Details regarding ramp closures will be displayed on the freeway changeable message signs. Detours will be marked.

Caltrans has constructed express lanes in other areas and found that noise associated with these activities was largely blocked by existing sound walls. Therefore, construction is expected to cause only minor noise increases. Nighttime lighting will also be used, but lights will be pointed toward the roadway to minimize impacts to nearby residents.

March 15, 2019

Project construction is starting the week of March 17, 2019. Closures of select lanes will occur nightly between 9 p.m. and 5 a.m. (excluding Friday and Saturday nights). No daytime lane closures are anticipated. Over the next three months, construction activities will take place in Palo Alto, East Palo Alto, Menlo Park, and Redwood City. During this time, construction activities will occur primarily on the shoulders and median of U.S. Highway 101.

Construction activities include placing temporary concrete barriers, demolishing portions of the existing median barrier, removing pavement, and installing temporary traffic monitoring equipment. Caltrans has constructed express lanes in other areas and found that noise associated with these activities was largely blocked by existing sound walls. Therefore, construction is expected to cause only minor noise increases. Nighttime lighting will also be used, but lights will be pointed toward the roadway.