State Route 242 / Clayton Road Ramps

State Route 242 / Clayton Road Ramps State Route 242 (SR242) is a 3.4-mile long connector freeway that links I-680 to State Route 4. In addition, the SR242 corridor serves commercial, light industrial and residential land uses in the City of Concord. The interchanges at Clayton Road and Concord Avenue are considered the primary access

San Pablo Dam Road/I-80 Interchange Improvement Project

San Pablo Dam Road/I-80 Interchange Improvement Project The Interstate 80/San Pablo Dam Road interchange provides access between residential areas north and east of the interchange and Bay Area employment centers. The interchange is currently experiencing severe peak hour congestion, resulting in extensive delays. Future traffic forecasts indicate that existing congestion is projected to increase, resulting

Interstate 80 / Central Avenue Interchange Improvements

Interstate 80 / Central Avenue Interchange Improvements Central Avenue serves as the primary connection between the El Cerrito Plaza BART station and the I-80 and I-580 freeways. It also serves as an important east-west route between commercial areas and local neighborhoods. The four closely spaced signalized intersections along Central Avenue between Jacuzzi Street and Pierce Street lack sufficient storage capacity, resulting in

Interstate 680 HOV Direct Access Ramps

Interstate 680 HOV Direct Access Ramps The I-680 High Occupancy Vehicle (HOV) Direct Access Ramps Project would provide more convenient, direct access for transit vehicles and HOVs to and from San Ramon destinations (including the San Ramon Transit Center), reduce weaving across multiple freeway lanes by transit vehicles and carpoolers entering or exiting the freeway,

Interstate 680 / State Route 4 Interchange Improvements

Interstate 680 / State Route 4 Interchange Improvements In order to facilitate removal of overhead signs and ensure crew and public safety during this operation, temporary nighttime freeway closures will occur on Thursday, June 6 and Friday, June 7, 2019.  This work has been scheduled during nighttime hours to minimize impacts to commute-hour traffic. Please

Innovate 680

Serving communities in central and southern Contra Costa County, Interstate 680 (I-680) is a backbone corridor for the Bay Area. It extends south to Silicon Valley and north to Fairfield, while providing access to scenic recreational areas, popular retail hubs, and thriving business centers. I-680 is critical to the region’s prosperity as it provides for the movement of goods and services throughout the Bay Area and beyond. Thousands of homes and businesses rely heavily on this corridor for day-to-day travel.

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