SALINE COUNTY — Law enforcement authorities are investigating the cause of an accident that injured a northwest Kansas woman just before 6p.m. Wednesday in Saline County.

A 2014 GMC Sierra driven by Ashalee Tankersley, 25, Colby, was westbound on Interstate 70 in Salina, according to Saline County Sheriff Roger Soldan.

The vehicle entered the median and traveled off the Mulberry Creek Bridge between the Ohio and Ninth Street exits.

Tankersley, who was not wearing a seat belt and unconscious, was transported to Salina Regional Health Center for treatment of a broken leg.

Alcohol is believed to be a factor in the crash, according to Soldan.