Interstate 680 Express Lanes from State Route 84 to Alcosta Boulevard Project

3 Documents in Project


SCH Number
Lead Agency
Caltrans, District 4 - Bay Area/Oakland (California Department of Transportation, District 4)
Document Title
Interstate 680 Express Lanes from State Route 84 to Alcosta Boulevard Project
Document Type
FIN - Final Document
Project Applicant
Alameda County Transportation Commission
Present Land Use
Interstate Highway

Document Description
Initial Study with Mitigated Negative Declaration/Environmental Assessment with Finding of No Significant Impact The California Department of Transportation (Caltrans), in cooperation with the Alameda County Transportation Commission (Alameda CTC), proposes to construct High Occupancy Vehicle/express lanes (HOV/express lanes) on northbound and southbound Interstate 680 (I-680) from State Route 84 (Vallecitos Road) in Alameda County to north of Alcosta Boulevard in Contra Costa County. HOV/express lanes are specially designated freeway lanes that are free for eligible HOVs and also give other vehicles, including single-occupant vehicles (SOVs), the option to pay a toll to use the lane. The proposed project extends for approximately 9 miles along I-680 from post mile (PM) R10.6 to R21.9 in Alameda County and from PM R0.0 to R1.1 in Contra Costa County. The new HOV/express lanes would pass in or near the cities of Pleasanton, Dublin, and San Ramon, and the community of Sunol. This is to advise you that a finding of No Significant Impact (FONSI) has been made for this project by the California Department of Transportation as assigned by the Federal Highway Administration pursuant to 23 USC 327. A copy of the FONSI and the attached Environmental Assessment can be obtained from the California Department of Transportation office located at the above address.

Contact Information
Brian Gassner
California Department of Transportation, District 4
111 Grand Avenue, MS 8B
Oakland, CA 94623

Phone : (510) 286-6025


Dublin Pleasanton San Ramon
Alameda Contra Costa
San Francisco Bay Area
Cross Streets
I-680/SR 84 interchange in south to I-680/Alcosta Boulevard interchange in north
State Highways
I-680, SR 84
Other Location Info
Along I-680 from post mile (PM) R10.6 to R21.9 in Alameda County and from PM R0.0 to R1.1 in Contra Costa County

Notice of Completion

Reviewing Agencies
California Air Resources Board California Department of Conservation California Department of Fish and Wildlife, Bay Delta Region 3 California Department of Forestry and Fire Protection California Department of Parks and Recreation California Department of Resources Recycling and Recovery California Department of Transportation, District 4 California Department of Water Resources California Governor's Office of Emergency Services California Highway Patrol California Native American Heritage Commission California Natural Resources Agency California Public Utilities Commission California Regional Water Quality Control Board, San Francisco Bay Region 2 Department of Toxic Substances Control Office of Historic Preservation State Water Resources Control Board, Division of Water Rights


Final Document(s)
ALA-680 (0Q3000)_Final Admin FED   PDF 38095 K ALA-680 (0Q3000)_NOA-FONSI   PDF 92 K

Disclaimer: The Governor’s Office of Planning and Research (OPR) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at or via phone at (916) 445-0613. For more information, please visit OPR’s Accessibility Site.

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