UPDATE: Highway 99 has reopened in both directions following the vehicle incident south of Function Junction.
Motorists are being warned to expect delays.
Highway 99 is closed in both directions due to a reported motorcycle crash approximately eight kilometres south of Whistler.
Emergency crews, including an air ambulance, have arrived on scene, while Drive BC says an assessment is in progress. It is not currently offering an estimated time of reopening.
This story will be updated as more information becomes available.