The bridge closures will run from 9 a.m. until 2:30 p.m. each day, with no vehicles or pedestrians allowed across.
The closure is for bridge balancing and testing ahead of the fall board run season.
Detours for drivers:
Northbound vehicles: State Street to westbound Wacker Drive, northbound Dearborn Street, eastbound Kinzie Street and back to northbound State Street.
Southbound vehicles: State Street to westbound Kinzie Street, southbound Wells Street, eastbound Washington Street and back to southbound State Street.