Skip to main content

I-680 Sunol Northbound Express Lane Project

The I-680 Sunol Northbound Express Lane project will add a carpool/express lane in the northbound direction on I-680 from south of State Route 237 (SR 237) to north of SR 84 (approximately 15 miles), within Santa Clara and Alameda Counties in and near the cities of Milpitas, Fremont, Pleasanton, and the community of Sunol. The project will increase the efficiency of the transportation system by expanding and optimizing freeway capacity to reduce congestion and accommodate existing and future travel demands.

This overall project will be implemented in two phases. Phase 1 of the project will complete design and construction of a 9-mile segment between south of Auto Mall Parkway and State Route 84. Project approval and environmental clearance were completed in summer 2015. Final design of Phase I is complete. The Phase I construction contract was awarded in late November 2017. Construction begins early 2018.

Read the Phase 1 (SR84 to Alcosta Blvd) Project Fact Sheet

Read the complete project fact sheet.

Read the final Environmental Impact Report/Environmental Assessment (EIR/EA), approved July 2015.

Project Background

A Draft Environmental Impact Report/Environmental Assessment (EIR/EA) was prepared for the I-680 Northbound HOV/express lane project for public circulation beginning November 20, 2014. It was circulated for public review with a closing date of Friday, January 23, 2015.

I-680 Northbound Express Lane Public Notice of Availability of EIR/EA and Public Open Forum Hearings

Aviso en español. Más información acerca de este proyecto está disponible en español en


 The Draft EIR/EA is available online (see links below):

The Draft EIR/EA is also available on the Caltrans website and at the following locations during business hours:

  • Caltrans District 4, 111 Grand Avenue, Oakland, CA 94612
  • Alameda CTC, 1111 Broadway, Oakland, CA 94607
  • Milpitas Library, 160 North Main Street, Milpitas, CA 95035
  • Pleasanton Library, 400 Old Bernal Avenue, Pleasanton, CA 94566
  • Irvington Library, 41825 Greenpark Drive, Fremont, CA 94538

Two public hearings were held to provide an opportunity for the public to comment on the document and project:

January 8, 2015
Mission High School
Fremont, CA  94539

January 13, 2015
Hearst Elementary School
Pleasanton, CA 94566

Written comments on the environmental document were due on Friday, January 23, 2015 via e-mail to or via regular mail to:

Wahida I. Rashid, Associate Transportation Planner
Department of Transportation, District 4
P.O. Box 23660, Oakland CA 94623-0660


As part of the planning process, two public scoping meetings were held in Fremont and Pleasanton in October 2012 to solicit comments on the scope of environmental studies being conducted for the project. The 2012 public notice of preparation for a draft Environmental Impact Report/Environmental Assessment for the I-680 Northbound HOV/Express Lane Project was made available in 2012:

For more information about the project, see the scoping meeting materials and I-680 project fact sheet.

Sign Up for Express Lanes Updates

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