San Bruno Grade Separation Project
Pile driving, which is the first step in the construction of the foundation of the grade separation, began last month. The work will involve excavation, drilling and machines that hammer or drive columns into the ground. A total of 361 piles will be driven into the ground over the course of six to eight weeks. A total of 228 piles have been driven to date.
Other work, which includes digging with a backhoe, mini-excavator and jackhammer, will be done. Temporary shoring will be installed in preparation for concrete pouring. Crews will locate and perform work on utilities, which may involve driving light duty construction vehicles through city streets.
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 will perform routine maintenance at several locations next week.
San Francisco to South San Francisco
Tuesday, March 20 through Thursday, March 22, crews will operate light on-track machinery to grind and align tracks between 22nd Street and South San Francisco stations. Crews will also weld and grind tracks between the Bayshore and South San Francisco stations.
San Bruno to Millbrae
Tuesday, March 20 through Friday, March 23, crews will excavate, lay utilities, grade and remove ballast along the right-of-way between the San Bruno and Millbrae stations.
Redwood City to Menlo Park
Tuesday, March 20 through Thursday, March 23, crews will operate light on-track machinery to remove and replace rail ties between Redwood City and Menlo Park stations.