The Dane Co. Medical Examiner has identified a Sun Prairie man killed Tuesday in a crash on Highway 151 as 28-year-old Joseph Kreklow.
The crash happened shortly after 2:00 a.m.
Authorities say Kreklow's car was traveling without headlines on when it hit a semi.
Authorities say the 29 year old driver of the vehicle that collided with a semi was going the wrong way down Highway 151, and did not have his headlights on. The driver of the car was killed. His name has not been released.
A fatal crash overnight on Highway 151 near Sun Prairie. It happened at 2 a.m. and involved a semi and vehicle on Southbound 151 at Highway V-V. That portion of highway was closed for over 4 hours, but has since re-opened.