Schools rarely close in Minnesota. Never for the cold but do if there are blizzards. St. Paul has its winter carnival and had a downtown parade yesterday in below 0 conditions. They did shorten it to three blocks.
There are few heated bus stops. More are however coming online at major park and rides.
As for snow, generally our streets are plowed as soon as it starts snowing and sanded and salted prior to starts of snow. Usually if the snow ends in the evening our streets are plowed curb to curb before we get up to go to work. The only place where there are problems are in the inner city of Minneapolis and St. Paul where there is so much street parking to interfere with plowing efforts.
Minnesota is relatively warm compared to 20-30 years ago. With electronic ignition I have had no problem starting my cars. Block heaters and such are a thing of the past.
Winter outdoor activity goes on. People ice fish, hockey, broom ball, cross country ski, downhill ski, snow mobile, and snow shoe in the parks all winter. Joggers and walkers still use the paths that are cleared of snow. Once you get used to it it is not so bad. The trade off are glorious springs, falls and SUMMERS. We don't have to sweat like pigs in the summer. We can get temps over 100 but our evenings generally cool down. To this day I have no air conditioning in my house. It is naturally cooled and rose only once to 88 degrees when it hit 106 outside.
PS. I forgot to mention science experiments. When it reaches -20 like it did at our house you can take a pan of boiling water toss it in the air and watch it vaporize.