Over the three-day Martin Luther King, Jr. holiday weekend, Metro will be conducting track work the Blue and Orange lines and the Red Line will be single tracking.
The work will begin at 10 p.m. Friday night and continue through system closing on Monday, January 16.
Here's what you need to know:
•Beginning shortly before 10 p.m. Friday and continuing through closing Monday, free shuttle buses will replace Blue and Orange line trains between L'Enfant Plaza and Eastern Market, making intermediate stops at Federal Center SW and Capitol South stations.
•Two stations -- Federal Center SW and Capitol South -- will be closed.
•Blue Line trains will operate every 16 minutes in two segments: between Franconia-Springfield and L'Enfant Plaza, and between Eastern Market and Largo Town Center.
•Orange Line trains will operate every 16 minutes in two segments: between Vienna and L'Enfant Plaza, and between Eastern Market and New Carrollton.
•At stations served by both Blue and Orange line, trains will operate every eight minutes in each direction.
•On Friday night, the last trains to operate through the work zone before bussing are:
Beginning at 10 p.m. Friday and continuing through closing Sunday, Red Line trains will single track in two areas: between Dupont Circle and Friendship Heights to allow for NTSB-recommended track circuit replacement, as well as rail and fastener renewal, and between Takoma and Forest Glen to allow for fiber optic cable installation and platform rehabilitation.
Throughout the weekend, Red Line trains will operate between Shady Grove and Glenmont every 24 minutes.
Between 9 a.m. and 9 p.m. on Saturday and Sunday, additional trains will operate between Fort Totten and Farragut North. Customers should allow additional travel time.