Update, 2.07pm: CBD drivers should avoid the area as traffic is banked up on Sturt Street.
The CFA says the female driver is lucky to walk away from the crash.
Police are investigating the cause.
Update, 1.50pm: The woman is no longer trapped.
Earlier: One woman is trapped after a two-vehicle crash in Ballarat's CBD.
Emergency services are working on freeing the woman after her car rolled over on impact after the crash on the corner of Sturt and Drummond streets near Cellarbrations about 1.36pm.
She is conscious and breathing.
More to come.