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

The I-680 Express Lanes from SR-84 to Alcosta Boulevard Project will close the gap between existing and in-progress high-occupancy vehicle (HOV)/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). Phase 1 is combined with Caltrans pavement rehabilitation project within the same limits for the construction phase. Construction work for Phase 1 and Caltrans pavement rehabilitation started in February 2023. 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 Alameda CTC website.

Please note that the approved Environmental Document is for the overall project (Phase 1 and Phase 2).

Your thoughts on this project are important to us. The public comment period for the DED ended on June 30, 2020; however, questions may be submitted by email to ALA680expresslanes@dot.ca.gov or by phone to Brian Gassner, 510-286-6025 (voice).

Get updates about the I-580
and I-680 Sunol Express Lanes.

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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