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SR-84 Widening and SR-84/I-680 Interchange Improvements Project

Caltrans, in cooperation with Alameda CTC, has released the Draft Environmental Impact Report/Environmental Assessment (EIR/EA) for the State Route 84 (SR-84) Expressway Widening and SR-84/Interstate 680 (I-680) Interchange Improvements Project. Caltrans is the lead agency under the California Environmental Quality Act (CEQA) and National Environmental Policy Act (NEPA). Alameda CTC is the implementing agency for the preliminary design and environmental review phase.

The project proposes to widen and conform SR-84 to expressway standards between south of Ruby Hill Drive and the I-680 interchange in southern Alameda County. The project would also improve SR-84/I-680 interchange ramps and extend the existing southbound I-680 high-occupancy vehicle/express lane northward by approximately 2 miles. The purpose of the proposed project is to alleviate traffic congestion, improve operations and safety, and improve bicycle access on SR-84 and at the SR-84/I-680 interchange.

You are invited to attend a public meeting and open house about the findings of the EIR/EA and the potential environmental effects of the proposed project. We welcome your comments and participation. Meetings will be held at the following locations and dates:

Wednesday, November 15, 2017
6-8 p.m.
Robert Livermore Community Center, Larkspur Room
4444 East Avenue
Livermore, CA 94550

Thursday, November 16, 2017
6-8 p.m.
Sunol Glen Elementary School, Auditorium
11601 Main Street
Sunol, CA 94586

Tuesday, November 21, 2017
6-8 p.m.
Amador Recreation Center
4455 Black Avenue
Pleasanton, CA 94566

A brief presentation on the project will begin at 6:30 p.m. The rest of the meeting will consist of an open house in which attendees can view informational exhibits and ask questions of project team members.

Caltrans will accept comments on the Draft EIR/EA until December 18, 2017, via postal mail to:

Brian Gassner
California Department of Transportation
111 Grand Avenue, MS 8B
Oakland, CA, 94612

Or via email to:

You may also provide written comments in person at one of the public meetings.

Additional information is available at If there are any questions, please contact Jack Siauw, Project Manager (Caltrans) at (510) 715-9574 or contact Gary Sidhu, Project Manager (Alameda CTC) at (510) 208-7414.