OVERLAND PARK, Kan. (KCTV) – Drivers have been warned that one lane of I-435 in Overland Park remains closed as emergency crews respond to a serious collision. The Overland Park Police Department says that just before 2:10 p.m. on Thursday, Feb. 1, emergency crews were called to the area of eastbound I-435 between the Nall and Roe Ave. exits.