All stations will be open this weekend, but gaps between trains will be greater than normal. (J. Scott Applewhite/Associated Press)

The short holiday lull in Metro’s rebuilding program ends this weekend, with work on all five Metrorail lines. None of the projects requires station closings.

Here’s the schedule for 10 p.m. Friday through the rail system’s midnight closing Sunday.

Red Line. Crews will work on the tracks between Friendship Heights and Medical Center. Trains will leave the ends of the line at Shady Grove and Glenmont every 15 minutes throughout the weekend. But from 9 a.m. to 9 p.m. Saturday and Sunday, more trains will be in service between Friendship Heights and Silver Spring. So in that zone, trains should reach platforms every eight to 10 minutes.

Orange Line. Workers continue to rebuild the platforms at Minnesota Avenue and Deanwood. All along the line, trains will operate every 20 minutes throughout the weekend.

Blue Line. Crews will be working on the tracks between Pentagon City and Reagan National Airport. Trains will operate every 20 minutes.

Yellow Line. Same as Blue Line. Trains every 20 minutes.

Green Line. Workers will replace communication cables between Fort Totten and Prince George’s Plaza. Trains will operate every 20 minutes.

By midday Friday, Metro will have updated its online Trip Planner to reflect the special schedules for the weekend. Check that to make sure you spend as little time as possible waiting on platforms.