Cassier Hwy in mid-September

You didn't say where you were coming from. We just drove the Cassier yesterday and today. We arrived at Stewart, BC around 7 pm. We started in Skayway yesterday morning around 9 a.m. pulling a 40 foot 5th wheel and F450. We started the Cassier right near Watson Lake. The highway is in rough condition with a lot of frost heaves. About 20 miles shy of Boya Lake, the road smoothes out some. We stopped at Boya Lake park for the night. The camping was great with a lake view out the windows. Don't forget you lose an hour with the time change. You can use your generator until 7 pm, but can start again at 8 am. The road was fair down to Jade City. Stop there for free coffee and bathroom stop. Shopping prices are a little high for me. From there to Deese lake, the roads are on and off with heaves, but passable. We were able to maintain 45 to 55 mph through most of it. When the road goes smooth, it becomes striped, about 200 miles from Stewart. Before that the road has narrow shoulders in places and no center stripe. I wouldn't drive this road at night. The road is doable, but take you time. There are few gravel patches, but not many. The power company is putting up high tension wires about a 100 miles north of Stewart. This will slow you down for a little while. It looked like every thing will be open. About midway, Deese lake store looks permanently open, and Stewart has fuel. Good Luck