My daily commute is exit 11 to exit 18. 89 can be treacherous in the winter just like any any highway. If you’re a cautious winter driver you will be fine. Take and slow and increase following distance. Watch out for the tractor trailers, most of them will be drive too fast for conditions. NHDOT usually does a pretty good job, but they’re dealing with driver shortage this year. You might drive through 3 or 4 different kinds of weather all on your way into work. Also, you’ll noticed your gas mileage will go down by few MPG communing that stretch of 89. You go up and down, up and down, and up and then finally down into the valley. This is also part of the reason why 89 can be dangerous in the winter as well. Careful on that S curve at Exit 15. That’s probably the spot where I’ve seen the most accidents and I have almost gone off the road there too. The other night it took me over an hour to get home and usually my commute is 25/30 minutes. Just plan for longer commutes on days with shitty weather. Good luck!!