Caltrain Begins San Bruno Grade Separation Project

Caltrain Begins San Bruno Grade Separation Project

Construction begins Monday, May 3, on a rainwater control project in San Bruno, the first step in a grade separation project that will result in dramatic safety improvements at a key series of intersections in that community.

Caltrain will build a new underground box culvert to divert water away from the area during the construction and help reduce flooding in the neighborhood east of the railroad tracks.

The majority of the work will take place during the day, although some work will be done at night, after normal train operations have ended. Neighbors will hear noise from heavy construction equipment. At times during the project, First Avenue between Pine Street and San Mateo Avenue will be restricted to local traffic or one-way traffic.

The $165 million project will kick-off in the fall with the construction of a “shoo-fly,” temporary train tracks that will reroute the train around the construction.

The project will elevate the Caltrain tracks above San Bruno, San Mateo and Angus avenues. A new elevated train station between San Bruno and San Mateo avenues will replace the existing station. The project also includes three pedestrian underpasses, one at Euclid Avenue and Walnut Street, one at the new station and another near Sylvan Avenue.

A total of 191 parking spaces and a “kiss and ride” lot will serve the station at the former San Bruno Lumber site.

The project will improve safety and reduce traffic congestion in the area and enhance the entrance to the City. As part of the project, Angus Avenue, which currently makes a sharp turn at the tracks, will be straightened.

Lighting under the bridges and pedestrian underpasses, variable finishes on the surface of the concrete and drought resistant plantings are included in the project. Improvements to Posy Park, located on the east side of the tracks at San Mateo Avenue, include a water feature, decorative street furniture and colored, textured paving.

For more information about the project click here. Questions can be addressed to the Caltrain Office of Public Affairs, 650.508.7726 or

Media Contact: Christine Dunn, 650.508.6238