Willow Road/U.S. 101 Interchange

Willow Road - US 101 Interchange
The City of Menlo Park is a project sponsor of the Caltrans project to update the interchange of U.S. 101 at Willow Road. The current "full cloverleaf" style interchange will be replaced with a "partial cloverleaf" which will eliminate the short merge weaves both on Willow Road and on the freeway and will create a more efficient way for all modes of traffic, including bikes and pedestrians, to get across the freeway at Willow Road. The project will replace the existing interchange with a new, wider bridge; add sidewalks on both sides, bike lanes on both sides and protected bike paths on both sides; and add two signalized intersections. The final version of the new interchange layout is available for review.

Current status

This project was awarded to a contractor in February 2017 and construction began in May 2017 and is expected to continue for approximately 2 years.

Current construction activities

For more detailed construction information, please refer to the weekly construction news updates

Dates Times  Impacted area Activity  Traffic impacts
May- September, 2017 Hours vary U.S. 101 and on- and off-ramps Pavement widening and temporary striping  
July 24, 2017 - Summer 2018 24 hours per day Willow Road between Bay Road and Newbridge Construction of Willow bridge, no bicycles or pedestrians allowed Bicycle and Pedestrian shuttle provided and Ringwood pedestrian bridge available as detour. View shuttle map
July 2017 - October 2017 Hours vary Willow Road East of 101, Pierce Road, E. Bayshore Road, Bay Road, Willow Road at Bay Road, Grayson Court Water line installations Majority of work is outside of roadways, but some shoulder and lane closures may occur
Starting late Sept./early Oct. 2017 24 hours per day U.S. 101 Ramps and Willow Road intersections  Change in ramp layout and added temporary traffic signals Both SB ramps will be on south side; Both NB will be on the north side of Willow Road; Both intersections will be signalized for duration of project.
Last updated on September 7, 2017