I bought a new '95 Cannondale H600 hybrid specifically for winter riding. It has 29k miles on it now. It goes through components about 6 times faster than my summer bike. The frame will corrode from the MN salt, but it's easy to scrape it off and paint over with some Rustoleum. I use a plant watering can with warm water to rinse off the frame as needed. I can control the trickling of the water and have no problem with ice build up. Lightly rubbing with a cloth/paper towel while watering my bike gets the crud off too. But it's the salt I'm mainly after.
A chain lasts about 1k miles. I used to put more effort into maintenance of that, but it wasn't worth the time. I'll rinse that off with the watering can, pat it down with paper towels, and lube with Chain-L. I'd had higher hopes for that lube but it doesn't seem to hold up any better than any other petrol lube in winter conditions.
Oh, and if you don't have fenders, get some!