Emergency crews were called in to the scene at the intersection of Melbourne and Creswick-Dean roads following reports a woman in her 40s was trapped in her vehicle about 12.50pm.

While circumstances leading up to the crash remain unclear, her silver sedan had come to rest on its side.

A spokeswoman for Ambulance Victoria said paramedics assessed the woman at the scene before transporting her to Ballarat Base Hospital in a stable condition.

Police have launched an investigation into the incident.

No other vehicles were involved.