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101 / Woodside Interchange

101-Woodside project area(click here or on map for full size pdf)

Latest News
Environmental analyses are well underway after a productive Environmental Scoping Meeting in November 2014, which was attended by approximately 32 community members, and subsequent receipt of 35 formal comments on the Project. Click here to view the Environmental Scoping Meeting Overview, which summarizes the event and provides an overview of comments received. As expected, comments covered a range of topics, including the following:

  • Pedestrian and bicycle access
  • Trucks
  • Planned development
  • Transit improvements
  • Project design components
  • Environmental issues
  • Improvement alternatives

The consultant team’s Scoping Meeting presentation was compiled into a video (no audio), which may be viewed by clicking here. Also, an Alternatives video (no audio) was screened during the Scoping event and illustrates turning movements for each alternative including a generic animation of the Diverging Diamond Interchange concept.  The Alternatives video may be viewed by clicking here.

A new Promising Alternatives web page includes color drawings of the alternatives presented at the Scoping Meeting, with short text descriptions, and may be viewed by clicking here.

Results of the environmental analyses will be compiled in the Draft Environmental Document (DED). That report and the Draft Project Report (DPR), describing the engineering dimensions (geometric design, construction phasing, right of way, and cost) of the alternatives, are scheduled to be released for public review in September 2015. Stay tuned for Project updates.

Please contact Paul Krupka, the City's Project Manager, or 650.504.2299 if you have any questions or comments about the project.

Click here if you would like to sign up to receive eNews updates about the 101/Woodside Interchange project.

Project Overview
The City of Redwood City, in cooperation with the California Department of Transportation and the San Mateo County Transportation Authority, is proposing to reconstruct the Route 101/84 (Woodside Road) interchange. The purpose of the project is to relieve existing and future traffic congestion, and to improve traffic safety and vehicular access to and from Route 101 and SR 84 (Woodside Road). The goals include improving highway operations, reducing associated congestion on Redwood City streets, removing barriers to non-motorized travel, and minimizing impacts on nearby businesses. The project proposes to modify the on- and off-ramp configuration at the interchange and adjacent local intersections to improve traffic flow, increase safety, and better accommodate pedestrian and bicycle access across Route 101.

The City hired a consultant team led by URS to conduct the Project Approval & Environmental Document (PA & ED) phase of the project. This two-year phase began in late 2013 and includes data gathering and mapping, development and implementation of a community outreach process, traffic analysis of existing and future conditions, definition and evaluation of geometric improvement alternatives, environmental analysis and documentation, and development of a project report.

The chart below summarizes the full project schedule. The first four activities, Preliminary Design, Technical Studies, Scoping, and Environmental Review, constitute the PA&ED phase, which will result in a preferred alternative and is scheduled for completion with Caltrans approval in Spring 2016. Detailed design, using programmed City and Transportation Authority funds, will commence in 2016 and be completed in 2018. The City and its partners are working to secure funding for Right of Way and Construction and if all goes as planned, construction of the new interchange will begin in 2019 and be completed in 2021.

Project timeline chart

Community Engagement
The two-year PA&ED community engagement and visioning process began in January 2014 and included numerous meetings with stakeholders, two community meetings, and two City Council Study Sessions as well as web page postings and eNews announcements. These activities provided many opportunities for all interested parties to be informed and involved in the development of project alternatives.

A final round of stakeholder meetings and a City Council Study Session on the DED will complete the community engagement activities. A Final Community Engagement report will be prepared to document processes and results of this critical aspect of the PA&ED phase.

Current Project Information

Previous Studies

Project Manager
Paul Krupka, P.E.
Transportation Engineer






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