Green-line service from Fremont and Blue-line service from Dublin/Pleasanton, will only operate as far as the 24th Street station.
Yellow-line service, which travels between Pittsburg/Bay Point and the San Francisco International Airport, will operate normally with a five- to 10-minute delay between Balboa Park and Colma stations.
Fremont and Dublin/Pleasanton passengers will need to transfer at the 24th Street station to a train providing yellow-line service to and from the Glen Park, Balboa Park and Daly City stations.
Crews at the Daly City station will be making mechanical, electrical, and structural improvements all over the station.
Scheduling maintenance work on the weekends has proven effective and efficient in recent months and allows BART crews to complete a large amount of work in a short period of time, according to BART officials.