Emergency personnel responded about 11:15 a.m. Thursday to a two-vehicle crash on Route 156 near Deer Hill Road west of Waterloo.

The Waterloo Fire Department responded to successfully extricate one subject involved in the crash.

The Monroe County Sheriff’s Department said that a 2006 Nissan Xterra driven by Aidan T. Brewer, 19, of Valmeyer, was traveling westbound on Route 156 behind a 2016 Subaru Outback driven by Ellen D. Foerg, 70, of Waterloo. As the Subaru slowed to make a right turn into a driveway, the Nissan struck it in the rear. The Subaru struck a ditch and partially overturned as a result of the collision.

Foerg was transported to Mercy Hospital South in St. Louis County for treatment of unspecified injuries.