All Loop elevated stations will be closed for track work over the weekend starting Saturday morning, impacting four train lines, according to the CTA.

Starting at 4 a.m. Saturday, the Brown, Green, Orange and Pink lines will be impacted as the Clark/Lake, State/Lake, Washington/Wabash, Adams/Wabash, Harold Washington Library, LaSalle/Van Buren, Quincy and Washington/Wells stops will close until 2 a.m. Monday.

The Brown line will operate normally between Kimball and Merchandise Mart, and Orange Line trains will continue to operate normally between Midway and Roosevelt, according to the CTA. Green Line trains will also operate normally between Harlem/Lake and Clinton, and between Roosevelt and 63rd Street.

For the gaps in the Green and Orange lines, free shuttle buses will run between Roo

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