Interstate 5 has reopened between Hugo and Canyonville, the Oregon Department of Transportation reported.

Updated 6:55 p.m. All northbound lanes of Interstate 5 at exit 66 at Hugo have reopened. All vehicles except four-wheel-drive must chain up, the Oregon Department of Transportation reported.

Southbound I-5 is open from Glendale, which is mile 80, but traffic is still stopped at exit 99 at Canyonville.

Even with the reopening, travelers should expect delays and congestion as the back-up from the closure will take time to clear, ODOT officials said. They suggest travelers consider stopping for the night until conditions improve.

12:45 p.m.Interstate 5 is closed between Hugo and Canyonville, the Oregon Department of Transportation reported.

The freeway is closed from mile 66 to mile 99, over Sexton Summit, Stage Road and Canyon Creek passes.

TripCheck.com reported that the shut-down, posted around noon, was a "long-term closure for severe winter driving conditions." It said motorists should expect lengthy delays and use alternate routes if possible.

Reports said packed snow had covered the road and it was snowing hard and continuously on Sexton Mountain. Pacific Power reported on its website that about 860 customers were without power in Sunny Valley and Wolf Creek. The cause of the outage was unknown, but power was expected to be restored by 3:30 p.m.

To the south, crashes and delays were reported on Siskiyou Summit, too. Tractor-trailers and passenger vehicles had skidded out of control, causing some lane blockages, TripCheck.com reported. Chains are required, except for on four-wheel-drive vehicles. The road is snow-packed and snow is falling heavily.

On Highway 199 to the coast, Hayes Hill Summit is snow-packed. Traffic is being held periodically while crews deal with numerous car and semitruck crashes that are blocking lanes. Drivers should expect delays of 20 minutes to two hours, TripCheck.com reported.