San Bruno Grade Separation


The $155 million San Bruno Grade Separation Project elevates the Caltrain tracks above three existing at-grade street crossings at San Bruno, San Mateo and Angus avenues. This will improve safety for both motorists and pedestrians, and it will reduce traffic congestion to and from Highway 101 in the City of San Bruno.

In addition, a new elevated Caltrain station has been built and opened to the public on April 1, 2014 between San Bruno and San Mateo avenues, replacing the existing station at Sylvan Avenue. A total of 201 parking spaces and a “kiss and ride” lot will serve the station at the site of the former San Bruno Lumber.

With respect to pedestrian safety and amenities, the project provides three pedestrian underpasses - one in the vicinity of Sylvan Avenue, one at the new station and another between Euclid Avenue and Walnut Street. Additionally, elevators provide easy access for Caltrain customers. Streets and sidewalks, including those at Posy Park, also have been improved.

Construction Updates

This project has been completed.

Project Documents & Notices
SBGS Pedestrian Detour Map - Sept. 13 to Sept. 16, 2013
Pedestrian Detour Map Part 2 - Sept. 20 to Sept. 30, 2013
Community Meeting Presentation - Sept. 4, 2013
UPDATED - Project Fact Sheet - Sept. 4, 2013
Updated - Road Closure Map - Aug. 29, 2013
Community Meeting Notice - Aug. 26, 2013
Updated - Road Closure Schedule - Aug. 13, 2013
UPDATED - Road Closure Notice - Aug. 8, 2013
August Road Closure Notice - Aug. 1, 2013
Updated Road Closure Notice - July 22, 2013
SBGS Road Closure Map - July 18, 2013
Project Fact Sheet
Detour map- January 11 - 18, 2011
Community Meeting Presentation- July 13, 2011
Community Meeting Presentation- September 30, 2010
Community Meeting Presentation- March 31, 2010
Street Closure and Community Meeting Notice- January 9, 2012
Community Meeting Notice- July 13, 2011
Temporary Crossing Closures - Scott Street & South Linden Avenue

First Avenue Cul-de-sac Notice
Scott Street Night Work Notice
Temporary Station Night Work Notice

Lead Agency: Caltrain

Contractor: Granite Construction Company

Project Limits: South Linden Avenue to San Felipe Avenue

Construction Cost: $155 million
(SMCTA: $92.4 million; State: $55.9 million; Federal: $6.6 million)

Began Construction: November 2010

Completed Construction: April 2014

For additional questions or concerns regarding the construction project, please contact our dedicated outreach line at 650.508.7726 or email For questions about Caltrain service, please contact 800.660.4287.

To subscribe to page updates, please click HERE.

tcb - 5/16/14