The Alameda County Transportation Commission (Alameda CTC), in collaboration with the California Department of Transportation (Caltrans) and the cities of Berkeley and Emeryville, proposes to reconstruct the I-80/Ashby Avenue interchange to ease congestion, provide better interstate access, and connect pedestrians and cyclists to the San Francisco Bay Trail.
A critical gateway to Emeryville and Berkeley, this voter-approved project will enhance, support and connect the community.Improvements will include:
- A new interchange structure to supply better connections to Shellmound Street, Frontage Road, and Point Emery
- New bridges to provide vertical clearance along I-80 for freight vehicles
- A new shared bicycle and pedestrian pathway to afford direct access to the San Francisco Bay Trail
This project was approved by Alameda County voters in 2014 under Measure BB and represents a direct investment in regional infrastructure and economic development.
Bicycle and Pedestrian Overcrossing
This video simulates the proposed bicycle and pedestrian overcrossing (butterfly arch), one of three options discussed in the Draft Environmental Document.
This video simulates the view of the vehicle overcrossing showing pre-cast girders as discussed in DED (Westbound Ashby Avenue to Westbound I-80).
View From Freeway
This video simulates the view of the proposed project area from the freeway (Eastbound I-80 to San Pablo).
This video simulates the aerial overview of the proposed project area.
Air Quality ReportCalifornia Department of Transportation (Caltrans), as the National Environmental Policy Act (NEPA) lead agency, on the I-80/Ashby Interchange Improvement Project, is noticing to disclose the results of the project-level air quality studies conducted for the project for public comment. Project-level conformity analysis shows that the project will conform to the State Implementation Plan (SIP), including localized impact analysis with interagency consultation for particulate matter (PM2.5) required by 40 CFR 93.116 and 93.123. This project is not considered a Project of Air Quality Concern (POAQC) regarding particulate matter (PM2.5) as defined in 40 CFR 93.123(b)(1). A detailed PM2.5 hot-spot analysis was not completed because Clean Air Act and 40 CFR 93.116 requirements are met without an explicit hot-spot analysis. The project comes from a conforming Regional Transportation Plan (RTP) and Transportation Improvement Program (TIP). Public comments are requested regarding the project-level conformity analysis for 30-days from June 1, 2022 to June 30, 2022. The Project Assessment Form for PM2.5 Interagency Consultation and the Air Quality Conformity Task Force determination are included in Appendix C of the Air Quality Study Report, which can be accessed here. Your comments will be part of the public record. Please submit your formal comment(s) during the public review period that runs from from Wednesday, June 1, 2022 through Thursday, June 30, 2022 to Caltrans via the following options. You can submit written comments via mail at:
Caltrans, District 4
Office of Environmental Analysis
ATTN: Brooklyn Klepl, Environmental Scientist
P.O. Box 23660, MS: 8B
Oakland, CA 94623-0660 Or email comments to I-80AshbyProject@dot.ca.gov. (preferred method due to COVID-19) For more information, please contact us at (510) 504-7246 or visit us at www.I80Ashby.com. Thank you for your interest in this project! For total project cost and phase information, see the project Fact Sheets tab. For the Draft Environmental Document (DED), see the project Resources tab. The DED public comment period was December 15, 2021 to January 31, 2022.
2022 Open House
On January 11, 2022, Caltrans and Alameda CTC held a virtual public open house to present an overview of the Draft Environmental Document (DED) and its appendices, and to inform the public about the benefits and environmental impacts of the I-80/Ashby Avenue interchange improvements.Video Comments on the DED continued to be submitted during the 45-day comment period through January 31, 2022. Details on submission can be found on the Overview and Resources tabs.
2019 OPEN HOUSEThe public was invited to attend an open house to learn about the project on May 22, 2019 at the South Berkeley Senior Center at which the following materials were presented. Additional comments and questions regarding the project can be submitted at any time to the project team at inquiry@I80Ashby.com. Please visit the Resources tab for Frequently Asked Questions. Posterboards
- Project Overview
- Project Timeline and Milestones
- Improving Connections For All Users
- Existing Conditions To Be Addressed
- Preliminary Interchange Layout Concepts (Signal Loop, Roundabout, Signal As Roundabout)
- Preliminary Interchange Layout Concepts (Single Point Diamond, Tight Diamond, Diverging Diamond)
- Sample Interchange View (Tight Diamond)
- Citywide Bicycle/Pedestrian Path Connections
- Preliminary Bicycle/Pedestrian Path Concepts
- Environmental Studies
- Existing Conditions To Be Addressed
- Sample Interchange Roundabout Option
- Sample Interchange Tight Diamond Option
Draft Environmental Document
The Draft Environmental Document (DED) and its appendices for the I-80/Ashby Avenue Improvements project were prepared in accordance with the California Environmental Quality Act (CEQA) and the National Environmental Policy Act (NEPA) and are available for public review. The DED describes and evaluates the potential environmental impacts of this project.
The DED was circulated between December 15, 2021 and January 31, 2022 for public review and comments. It can be downloaded and reviewed from the links above, and digital copies of the DED are also available on the Caltrans website.
After receiving comments from the public, a Final Environmental Document will be prepared. The Final Environmental Document will include responses to formal comments received on the DED and will identify the preferred alternative(s). If the decision is made to approve the project, a Notice of Determination (NOD) will be published in compliance with CEQA.
When the NOD is made public, Caltrans will decide whether to issue a Finding of No Significant Impact (FONSI) or to require an Environmental Impact Statement (EIS) to comply with NEPA. A Notice of Availability (NOA) of the FONSI will be sent to the affected federal, state, and local government agencies, and to the State Clearinghouse.
Frequently Asked Questions
- Improving interstate access by car from both sides of I-80
- Providing direct access to the San Francisco Bay Trail for pedestrians and cyclists
- Increasing safety through incident management
- Formal comment period for the Draft Environmental Document (DED) – December 15-January 31, 2022
- Online Open House – January 11, 2022
- Final design – mid 2022
- Construction – late 2022 to early 2025