• Mary Avenue Overcrossing


City Hall
456 W. Olive Ave.
Sunnyvale, CA 94086

Mailing address:
Public Works
P.O. Box 3707
Sunnyvale, CA 94088-3707

Phone: 408-730-7415
Fax: 408-730-7286

Contact us

Hours: M-F 8 a.m. to 5 p.m


Mary Avenue Overcrossing

Mary Avenue Overcrossing Environmental Impact Report

The Mary Avenue Overcrossing project aims to relieve north-south traffic congestion in Sunnyvale, improve multimodal access between Moffett Park and other areas, and support smart growth in Moffett Park area.

The project would provide a multimodal connection from Mary and Almanor avenues, over US-101, SR-237 and Moffett Park LRT Station to 11th Avenue and Discovery Way (formerly E Street) in Moffett Park.

An Environmental Impact Report (EIR) is being undertaken to analyze and environmentally clear five potential project options.


A series of public meetings will be conducted as part of the environmental review process:

Community Kickoff
6:30 to 8:00 p.m. Tuesday, January 17, 2017
Washington Park Building
January 17 Presentation Slides

City Council Study Session
5 to 6 p.m. Tuesday, February 28, 2017
City Hall West Conference Room, 456 W. Olive Ave.
February 28 Presentation Slides

CEQA Scoping Meeting
6:30 – 8:00 p.m. Tuesday, March 21, 2017
Columbia Neighborhood Center, 785 Morse Ave.
March 21 Presentation Slides

You may also provide your input on the project via Sunnyvale's Open City Hall site.

To be added to the project mailing list please contact:

City Staff
Ria Hutabarat Lo, PhD
Transportation and Traffic Manager | Department of Public Works
456 W Olive Avenue | PO Box 3707 | Sunnyvale CA 94088

Consultant Team:
Alex Jewell, AICP, LEED AP
Project Manager | Kimley-Horn
555 Capitol Mall, Suite 300 | Sacramento CA 95814


As part of the EIR, we are analyzing five project options:

1.  Four lanes of motor vehicle travel plus bike facilities and sidewalks
2.  Two lanes of motor vehicle travel plus protected bike facilities and sidewalks
3.  A pedestrian/bicycle/transit overcrossing
4.  A pedestrian/bicycle overcrossing
5.  Removal of the overcrossing from the General Plan



The California Environmental Quality Act (CEQA) requires that all state and local government agencies consider the environmental consequences of projects for which they have discretional authority. The following documents have been prepared in relation to the Environmental Impact Report (EIR).

The following documents also refer to the Mary Avenue Overcrossing project:


Mary Avenue Overcrossing was included in the following City of Sunnyvale plans:

  • 1972 City of Sunnyvale General Plan
  • 1981 Transportation Element
  • 1997 Land Use and Transportation Element
  • 2004 Moffett Park Specific Plan
  • 2005 Traffic Impact Fee
  • 2011 Consolidated General Plan
  • 2013 Moffett Park Specific Plan Update
  • 2016 Peery Park Specific Plan
  • 2017 Land Use and Transportation Element (LUTE)

In 2007, the City of Sunnyvale completed a Draft Environmental Impact Report (EIR) for Mary Avenue Extension. Many members of the community provided comments on the Draft EIR. Key concerns related to traffic congestion, traffic speed, pedestrian and bicyclist safety, air pollution and emissions, noise, property values, smart growth, transit access, and merchant revenues.

Responses were provided to community comments, and City Council certified the Final EIR and approved the Mary Avenue Extension project in October 2008. In 2009, the Sunnyvale West Neighborhood Association filed a legal challenge against the City regarding the use of a 2020 traffic baseline for the traffic analysis. The Superior Court granted the petition in 2009, and the 6th District Court of Appeal upheld the Superior Court decision in 2010. City Council subsequently decertified the EIR and voided the project approval in 2011. Without an adequate EIR, no action has occurred on the project since that time.

The 2011 Consolidated General Plan included a policy to preserve the option of extending Mary Avenue to the industrial areas north of US-101. Mary Avenue Extension was also included in the Moffett Park and Peery Park Specific Plans, as well as several other documents which identified the project as a mitigation measure for impacts on automobile level of service (LOS).


City of Sunnyvale

Normal City Hours of Operation are
8 a.m. until 5 p.m.

(408) 730-7500

  • Sunnyvale City Hall
  • 456 W. Olive Ave.
  • Sunnyvale, CA 94086
  • TDD (408) 730-7501
  • Map and Directions 
  • City of Sunnyvale Logo

City of Sunnyvale

  • Sunnyvale City Hall

  • 456 W. Olive Ave.
  • Sunnyvale, CA 94086
  • TDD (408) 730-7501
  • Map and Directions

Can't Find It?

Follow Us

Follow us on Facebok Follow us on Twitter Follow us on Google+ Follow us on LinkedIn Follow us on Pinterest Follow us on Vimeo Follow us on YouTube

About the Web Site

The City of Sunnyvale Web Site
is maintained by the Sunnyvale Communications Office and
the Department of Information Technology.

Questions? Contact Us.

The Fine Print