Part of SB State Street to close in the Loop on Monday

CHICAGO (WLS) -- Traffic flow on a major downtown street is changing in the Loop.

Southbound State Street between Wacker Drive and Randolph Street will shut down on Monday. It won't reopen until the end of May.

There have been major closures in the area as crews work on building a new CTA station for the elevated Lake Street stop.

SEE ALSO | CTA State and Lake station 3-year closure takes effect | What to know

That project is expected to take three years.