UPDATE: 1/17 11a.m.: Police have identified the bicyclist as Michael Nowlin 27, of Springfield, Mo.
A bicyclist was struck and killed on I-435 near Nall overnight.
Overland Park Police were called to the westbound lanes of I-435 just before 2 a.m.
They discovered an adult male bicyclist was struck and killed by a motorist.
The driver of the vehicle stopped and is cooperating with the investigation.
Police say there is no initial sign of impairment by the driver.
Three lanes of I-435 WB were closed during the investigation , but were re-opened just after 6:15 a.m.
