Photo by PoPville flickr user JoshBassettPhotography

From WMATA:

The ongoing effort to rebuild and upgrade the Metrorail system to provide safer and more reliable service will continue over the weekend of November 16-18 on the Red, Orange, Blue and Yellow lines.

Red Line
• Beginning at 10 p.m. Friday and continuing through system closing on Sunday, Red Line trains will single track between Takoma and Forest Glen to allow for platform reconstruction, fiber-optic cable installation and rail improvements.
• Throughout the weekend, trains will operate every 20 minutes between Shady Grove and Glenmont.
• On Saturday and Sunday, between 9 a.m. and 9 p.m. each day, additional trains will operate between Shady Grove and Fort Totten, resulting in service about every 10 minutes between those stations.
• Customers traveling through the work zone should allow about 15 minutes of additional travel time.

Orange Line
• On Friday night and Sunday only, Orange Line trains will single track between East Falls Church and West Falls Church to allow for testing associated with the Silver Line extension.
• From 10 p.m. Friday through system closing and all day on Sunday, Orange Line trains will operate every 20 minutes between Vienna and New Carrollton. Customers should allow about 15 minutes of additional travel time.
• On Saturday, Orange Line trains will operate at regular weekend intervals.

Blue Line
• Beginning at 10 p.m. Friday and continuing through system closing on Sunday, Blue Line trains will single track between Stadium-Armory and Addison Road to allow for repairs to the floating concrete slabs beneath the rails.
• In addition, on Saturday only, Blue Line trains will single track between Pentagon City and Reagan National Airport to allow for rail and fastener renewal.
• On Friday night and Sunday, Blue Line trains will operate every 20 minutes. On Saturday, trains will operate every 24 minutes.
• Customers should allow 15-20 minutes of additional travel time.

Yellow Line
• On Saturday only, Yellow Line trains will single track between Pentagon City and Reagan National Airport to allow for rail and fastener renewal.
• Throughout the day, Yellow Line trains will operate every 24 minutes between Huntington and Mount Vernon Square. Customers should allow 15-20 minutes of additional travel time.
• On Friday night and all day Sunday, Yellow Line trains will operate at regular weekend intervals between Huntington and Fort Totten.