Caltrain Grade Separation: Potholing, Temporary Station Construction to Continue

Work on the San Bruno Grade Separation Project will take place Saturday, Aug. 6 to Friday, Aug. 12.

Day work will take place between the hours of 7 a.m. and 5 p.m. This includes potholing, construction of the temporary station, and utility line relocations and improvements. Relocation of utilities will primarily occur along San Bruno, San Mateo, Huntington, and Angus 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 4 a.m., outside of peak passenger service hours. This work will include signal system upgrades, excavation, drainage improvements, ballast installation, potholing, construction of the temporary station, installation of traffic signals, as well as pedestrian and traffic gate relocations. 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 atSan 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.