4:30 p.m.Update: Highway 11 both lanes are now open,
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Highway 11 is closed from North Bay's Thibeault Hill to Highway 64 Marten River due to what OPP is calling "a serious two-vehicle collision."
The closure happened around 11 a.m. All lanes are closed. Police say the collision is near Sand Dam Road.
OPP and ambulance are on-scene.
There are detours available, Travel west on Highway 17 to Sturgeon Falls, and take Highway 64 to the north of Marten River where it meets Highway 11 north.
Update 4 p.m. Hwy 64 Reduced to one lane in the Marten River area due to a collision.
Also, take Highway 63 to Quebec, then up to New Liskeard.
Meanwhile, Highway 17 west is reduced to one lane in the Hagar area due to a collision. (Update 12 p.m. now cleared)