I-680 Express Lanes From SR-84 to Alcosta Boulevard

The southbound express lane between Alcosta Boulevard and SR-84 is open to drivers as of February 13, 2026. There will be no tolls charged in this segment until tolling work is completed later this year. Drivers will see “Under Construction” notices on the pricing signs in this segment, and no toll rates will be displayed. Express lanes north of Alcosta Boulevard and south of SR-84 will continue to operate normally, with toll rates displayed and tolling in effect.

The I-680 Express Lanes from SR-84 to Alcosta Boulevard Project will close the gap between existing express lane projects directly to the north and south. The project extends for approximately 9 miles on northbound and southbound I-680 through Sunol, Pleasanton, Dublin and San Ramon. Project benefits include:
  • Increased efficiency of the transportation system between SR-84 and Alcosta Boulevard to accommodate current and future traffic demand
  • Improved travel time and travel reliability for all users, including HOV and transit users
  • Optimized freeway system management and traffic operations

Phase 1

Design and construction of this project is planned into two phases: southbound (Phase 1) and northbound (Phase 2). An Environmental Document was completed for both phases in 2020. Phase 1 civil construction is complete and the lane is open to drivers as of February 13, 2026, with tolling to commence later in the year. Phase 2 final design and construction will be implemented at a future date yet to be determined.

For additional information on Phase 1, see Phase 1 fact sheet on the Fact Sheets tab above.
Project Fact Sheet
Project Fact Sheet (Phase 1 only)

Prior Public Meetings

A virtual open house was held on June 18, 2020 to provide an overview of the project and the environmental process. To hear the recorded virtual open house presentation, click here. More detail can be found in the Final Environmental Document (FED).

Prior public information meetings were held on October 18, 2018 (Pleasanton), October 16, 2018 (Sunol) and October 9, 2018 (Dublin). Informational and technical posters presented at these meetings can be viewed here.

Project Documents

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