Grade Separation Update: Sewer Work to Cause Delays on Angus, Huntington

Work on the grade separation project will take place during the week, from Saturday, Dec. 31 to Friday, Jan. 6. 

Day work will take place between the hours of 7 a.m. and 5 p.m. This work will include asphalt and concrete work at the San Bruno and San Mateo avenues intersection, grading, relocating communication utilities, constructing drainage systems and tracks for the shoofly, surfacing tracks, installing temporary tracks east of current tracks, installing crossing gates at Angus Avenue and sanitary sewer relocations. 

Motorists should expect delays. Relocation of sanitary sewers will primarily occur at Angus and Huntington avenues 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 8 p.m. to 7 a.m., outside of peak passenger service hours. This work will include earthwork, relocating crossing gates at Angus Avenue, upgrading the signal system, and constructing drainage systems and tracks for the shoofly. Digging work will require the use of a backhoe, mini-excavator and jackhammer. 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 will be constructed between San Bruno and San Mateo avenues, replacing the existing station at Sylvan Avenue.

—Caltrain