A big bang Sunday morning knocked out another step in the demolition of the BMO Harris Bradley Center.
The Bradley Center roof was imploded around 9 a.m.
Nearby streets will be blocked off until 11 a.m.
At the last minute, the roof implosion was rescheduled from originally between 9-9:30 a.m. to 8:30-9 a.m.
Interior demolition of the Bradley Center started at the end of 2018.
The building is expected to be completely gone by the summer.