WASHINGTON — While there are no 24/7 surge zones this month, there are still significant disruptions for Metro riders outside of rush hour.

On Monday, Metro announced midday and evening track work would extend beyond the long-term work at those times on the Red Line to also disrupt the Orange, Silver and Blue lines.

On Tuesday, Metro announced a major shutdown of the Orange, Silver and Blue Lines this weekend between Rosslyn and McPherson Square.

Metro said it was part of a regular track work rotation. The tracks that carry the Orange, Silver and Blue Line between Rosslyn and Stadium Armory are among the most burdened in the system and have yet to see intensive repairs.

The weekday work on the stretch between McPherson Square and Foggy Bottom is focused on fastener and rail replacement and the elimination of joints that can cause issues.

The weekend shutdown focuses on the same issues and adds ceiling tile replacement.

On the Red Line, single tracking has become the norm outside of rush hour since federal investigators identified major issues with water backing up in tunnels on the west side of the Red Line. Crews have been focused for months on clearing drains and addressing other basic safety issues in the area.

The investigators have noted improvement in the area, but have found across the system that there are still issues with some of the work Metro is doing.

Metro announced in November that there would be no round-the-clock work zones in January as Metro focuses on problems in tunnels.

The next schedule announcement for upcoming 24/7 surges is expected later this month.

Metro had previously said it expected the extended work zones to shift next to the Blue and Yellow Lines near Braddock Road followed by work on the Blue Line through Arlington Cemetery then the Green Line near Greenbelt. The final one of those work zones could wrap up in May.