Grade Separation Update: Pile Driving to Start

Day work will take place Monday, Feb. 6 to Friday Feb. 10 between the hours of 7 a.m. and 4 p.m. and will require the use of a backhoe, mini-excavator and jackhammer. At times, noise levels could be as high as 75 decibels. 

Rebar will be installed and concrete pouring will occur, requiring the use of a concrete mixer mounted on a diesel truck. Aggregate material will be loaded and unloaded in large trucks. 

Pile driving will commence. This work may involve delays for motorists at San Bruno and San Mateo avenues intersection and may require temporary lane closures. Traffic cones and flaggers will direct motorists and pedestrians around the affected areas. 

Night work will take place from Sunday, Feb. 5 to Thursday Feb. 9 between 8 p.m. and 4 a.m., outside of peak passenger service hours and will include the use of a backhoe, mini-excavator, and jackhammer. Rebar will be installed and concrete pouring will occur, requiring the use of a concrete mixer mounted on a diesel truck. At times, noise levels could be as high as 75 decibels. Crews will use generators to power portable light towers. Night work will be done in accordance with Caltrain and city agreements and ordinances. 

The $147 million project will elevate the Caltrain tracks above three existing at-grade street crossings at San Bruno, San Mateo and Angus avenues. A new elevated Caltrain station between San Bruno and San Mateo avenues will replace the station at Sylvan Avenue.

—Caltrain