TULSA, Oklahoma - Police say a motorcyclist died after he struck a semi Friday evening.  

Officers say the crash happened on the Broken Arrow Expressway on-ramp in the 3800 block of South Memorial just after 9 p.m.

Police say the semi was turning left to go westbound on the expressway when the crash occurred. 

Officers closed the ramp for several hours while they investigated the crash.

The name of the motorcyclist has not been released.