Police are investigating a serious crash.
The call came in at 12:27 p.m. on Friday.
Investigators say a semi-truck traveling eastbound on Cheyenne Avenue and attempted to make a left turn onto the I-15 ramp.
A bicyclist also going eastbound on Cheyenne Avenue struck side of the semi. The bicyclist was transported to UMC with critical injuries.
Action News is working to gather more information. Check back for updates.