Here we rarely get that much snow, very little 'lake effect' reaches east of Lansing. It's fine with me! I slog through it rather than shovel, and make paths that way. The driveway gets plowed, and maybe a bit more.
Mary
We built a bit over code for a house, and I'm glad!
You can do it once, or do it over, and if you happen to be out there when that underbuilt roof collapses, it won't only be the chickens who suffer...
When a 35 ft. tall spruce fell on our coop, it punched a few holes in the roof, but no other...
Pictures will help here.
Unless your run has a roof, you will be shoveling, because generally chickens hate snow!
Make sure that any roofing is adequate to support your snow load, so there's not going to be a disaster, and you won't have to be out there at 2am removing snow during a blizzard...