Edmonton police say westbound Anthony Henday Drive has been reduced to one lane due to a collision just west of Terwillegar Drive.
EPS issued a short statement just before 9 a.m., saying traffic is being diverted onto the Terwillegar offramp, and only the far-left lane is open.
Drivers are advised to either avoid the area, or be prepared to sit in slow moving traffic.
No other details regarding the collision have been provided at this time.