New cold weather riding temperature for me. (9F/-12C). I had one altercation, which happened on Heart of America Bridge over the Missouri River. I've had a few flats on this section in the past, but not this time. The roads were fine for a majority of my 20-mile commute, but this bike path over the bridge had quite a bit of ice. I was being careful, and made it almost all the way across before my front tire slid out (still not sure how it happened since I was going straight), and I side-swiped the concrete barrier on my right. No real damage except for a scrape on my knee and my pride. Otherwise it was a good ride to work.