WASHINGTON (WUSA9) -- Metro officials saythere will beservice adjustments beginning at 10 p.m. Friday and continuing through system closing on Sunday to do work on the Metrorail system.

Officials tell us Red Line trains will run about every 8 minutes between Shady Grove and Union Station during the day, and 16 minutes between Shady Grove and Glenmont.

Trains on the Blue, Orange, Yellow and Green lines willrun every 20 minutes, say officials.

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