BIRNAMWOOD - Shawano County authorities responded to a 2-vehicle crash on Highway 45 Saturday.
It happened just before 8 a.m. north of Birnamwood.
Police say a 48-year-old woman driving a Cadillac was headed northbound on Hwy 45 when her vehicle was struck by a Toyota FJ Cruiser towing a boat headed southbound.
Officials say the FJ Cruiser crossed the center line to pass another vehicle and hit the Cadillac.
The driver of the Toyota fled the scene immediately, police say.
The 48-year-old woman driving the Cadillac was airlifted to a hospital. No update on her condition has been released.
Shawano County officials say Hwy 45 was shut down for 7 hours after the crash while Wisconsin State Patrol measured the scene for investigation.