Caltrans Bay Area will begin work on Interstate 80(I-80), Interstate 680 (I-680) and State Route 12 (SR-12) Interchange Project Package (PKG) 2A in Solano County. I-80/ I-680/SR-12 PKG 2A will focus on relieving congestion by replacing the existing single-lane eastbound (EB) SR-12 to EB I-80 connector with a new two-lane connector and bridge structure which has been designed to accommodate future project phases. The current weave of traffic merging onto EB I-80 from SR-12 and exiting off from EB I-80 to Green Valley Road and SB I-680 will be eliminated by this project. To eliminate this weave, this project will construct a new dedicated off-ramp from EB SR-12 to Green Valley Road and a new braided off-ramp from EB I-80 to Green Valley Road and southbound I-680.
The I-80/I-680/SR-12 is a multi-year, multi-phase project which includes Package 1 through Package 7. The project site will be near Fairfield’s Green Valley and Cordelia neighborhoods. I-80/I-680/SR-12 Interchange PKG 1 was completed in 2017 with a new Green Valley Road Interchange and westbound SR-12 connector from WB I-80 to WB SR-12. 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 majority-funded 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. The project will benefit motorists and the local community by improving travel times, reducing cut-through traffic on local streets, and enhance safety and operational efficiency for motorists along the I-80/I-680/SR-12 Interchange linking the Bay Area, the Napa Valley, and Sacramento. Construction is expected to begin in late September 2020. Package 2A of this project is expected to be completed by Fall 2022.
On Wednesday, September 23, 2020, Caltrans Bay Area, Solano Transportation Authority (STA) and the City of Fairfield held a virtual public informational meeting where Caltrans presented an overview of the I-80/I-680/SR-12 Interchange PKG 2A project to the Solano County community, covering project information and detours that will be in place while the project is underway.
For more information and updates on the I-80/I-680/SR-12 Interchange PKG 2A project, please visit the website at 80-680-12interchange.com .