Beginning on Monday, March 27th and lasting for approximately 1.5-2 months, the piers surrounding the Three Sisters Bridges (9th, 7th, and 6th) will be closed one at a time to conduct a deep cleaning, restoring the piers to their original stone colors from 1924. During this time, only one side of each pier will be closed at a time to allow trail users to use the trail on the opposite side. Detour signs will be posted.