A rock slide in the Rocky Mountains early Saturday morning has forced Highway 16 to close to all traffic, from just west of Jasper, Alta., and stretching partway into B.C.

Mounties are helping Parks Canada clear the highway and redirect a lot of traffic, but there were no reports of the slide hitting any vehicles or injuring anyone, Jasper RCMP said in a news release issued shortly before 3:45 a.m. MT.

The highway is closed from about 12 kilometres west of the Jasper townsite, to the Mount Robson Provincial Park area in B.C., just west of the interprovincial border, according to maps produced by the Alberta and B.C. transportation ministries.

WATCH | Rock slide closes Yellowhead Highway west of Jasper:

Rock slide closes Yellowhead Highway west of Jasper

One of the main routes through the mountains connecting Alberta and B.C. is currently impassable.
RCMP confirm a rock slide early Saturday morning has forced the closure of Highway 16 in both directions about 12 kilometres west of the town of Jasper, near the provincial border.

The 30-metre long rock slide has completely blocked the highway, with debris near the Miette River, according to Alberta 511. Police and the transportation ministry are asking drivers to find alternate routes while the highway is cleared and safety assessments are done.

The highway is expected to be closed for a long time, but as of noon Saturday, there was no clear timeline for when the highway will reopen.

An update is expected at 5 p.m. Saturday, Alberta 511 says.