Update 8:43pm

Major Crash Investigators are at the scene of a serious crash at McLaren Vale.

About 5.40pm Sunday 28 March emergency services were called to the intersection of Main Road and Johnston Road after three cars crashed. Six people were taken to hospital with non-life threatening injuries. One woman was airlifted to the Flinders Medical Centre in a critical condition.

The intersection remains closed in all directions while emergency services and Major Crash are at the scene. It is expected to be closed for several more hours, please avoid the area.

Anyone who witnessed the crash who has not yet spoken to police is asked to contact Crime Stoppers on 1800 333 000 or report on line at www.crimestopperssa.com.au