Solano I-80 I-680 SR12 Interchange

Closure Information Friday, March 25 -Monday, March 28, 2022

Starts Friday, March 25 at 9:00 PM until Monday, March 28 at 4:00 AM

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80 680 12 Improvement Map

I-80/I-680/SR12 Interchange Project: Package 2A


Project Overview:

Interstate 80(I-80), Interstate 680 (I-680), and State Route 12 (SR 12) Interchange Project 2A will improve and widen the eastbound SR 12 (EB SR 12) to EB I-80 connector on the I-80 corridor as well as improving the connectivity between regionally significant destinations. The I-80/I-680/SR 12 Interchange is a multi-year, multi-phase project located in Solano County. This multi-year project includes Package 1 through Package 7, each to be constructed under separate contract subject to funding availability.  The southwest project limits are near Fairfield’s Green Valley and Cordelia neighborhoods, while the northeast project limits is near Suisun City. I-80/I-680/SR 12  Interchange Package 1 was completed in 2017 with a new Green Valley Road Interchange and westbound (WB) SR 12 Connector from WB I-80 to WB SR 12.

September 23, 2020 Outreach Meeting - Zoom Video Presentation
(Download 20MB)

Accessibility Assistance: Co/trans makes every attempt to ensure our documents are accessible. Due to variances between assistive technologies, there may be
portions of this document which are not accessible. Where documents cannot be made accessible, we are committed to providing alternative access to the content. Should you need additional assistance, please contact Pedro Quintana, Caltrans Bay Area PIO, Phone (510) 286-5620.

Interchange Package 2A:

I-80/I-680/SR 12 Interchange Package 2A is the second of seven packages improving the distribution of three major freeway movements at this interchange by reconfiguring the ramps and access to local streets.  The project is funded majority with  Senate Bill 1 (SB1) Trade Corridor Enhancement Program (TCEP) funds. It is also funded with State Transportation Improvement Program-Regional Improvement Program(STIP-RIP) funds as well as local Bay Area Toll Authority (BATA)Bridge Toll Funds.

Caltrans Bay Area, Solano Transportation Authority, and City of Fairfield will be co-hosting a virtual info meeting to provide the community with project information and detours that will be in place while the project is underway.

Learn More: I-80/I-680/SR-12 Interchange PKG 2A Virtual Groundbreaking Ceremony Video

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Scope of Work:

This section of the I-80/I-680/SR 12 Interchange project would replace the existing single-lane EB SR 12 to EB I-80 connector with a new two-lane connector bridge structure that will be constructed and designed to accommodate future project phases. The project will also construct a new slip ramp from EB SR 12 directly to Green Valley Road (GVR) and a new braided off-ramp from EB-I-80 to GVR and southbound I-680.  

Driver Benefits:

The project will benefit motorists and the local community by improving travel times, reducing cut-through traffic on local streets, and enhance safety by streamlining connections for motorists transitioning between these three major state routes linking the Bay Area, the Napa Valley, and Sacramento.

Key Dates: This project (PACKAGE 2A) is expected to be completed by Fall 2022.