The Washington County Sheriff's Office responded to an early morning rollover crash on I41 northbound, just south of Cedar Creek Road in the Town of Polk.

Upon their arrival, rescuers located a severely damaged automobile down a steep embankment on the east side of I41.

Crews located the vehicle which had rolled several times and came to rest after striking a tree.

The driver of the vehicle, a 50-year-old West Milwaukee woman, required extrication from her vehicle and was flown to Froedtert Hospital in Wauwatosa via Flight For Life.

The driver's injuries are believed to be non-life threatening.

Investigation reveals that the driver and sole occupant of the crashed vehicle was northbound on I41 in the left lane when for an unknown reason, her vehicle gradually veered right and entered the east ditch line. The vehicle continued northbound in the ditch line and struck the back side of a metal guardrail. After striking the guardrail, the vehicle rolled several times down a steep embankment and struck a tree.

No other vehicles were involved in the crash and the driver was wearing her seatbelt.

The crash remains under investigation.