Ayuh, it's an XC trail / snowmobile route from the west and is not plowed. We've skied it - it's nice, pretty as it winds up the valley, and of course packed well by the snowmobilers.
Also, don't try to take it from the west side in spring (mud season) unless you've got a seriously appropriate vehicle. Last year una_dogger and I saw a little coupe (Honda Civic?) stuck in the mud over halfway up the wheels.