Starting today, the Powell-Mason and Powell-Hyde cable car lines will be shut down along with the California line, which has been undergoing repairs since January, according to SFMTA spokesman Paul Rose.
Muni shuttle buses will operate along the cable car routes with all regular, accessible stops available for passengers, Rose said.
SFMTA staff will be available at station terminals to provide assistance and share transit options for riders, according to Rose.
This week's five-day shutdown is the final of three Powell line shutdowns, which previously occurred in March and April, Rose said.
All three cable car lines have undergone repairs and upgrades as part of the SFMTA Cable Car Improvement Project, an effort to keep the 27-year-old lines safe, reliable and easier to maintain, Rose said.
The entire improvement project is expected to be completed by July with the reopening of the California cable car line, Rose said.
Project improvements include replacing aging electronic and mechanical equipment under the cable car trackway along with street repavement along the California line, Rose said.
The SFMTA is also installing curb ramps at most intersections along all cable car lines to comply with ADA accessibility requirements, Rose said.