Google says the more norther bits are dirt:
[ame="https://maps.google.com/maps?q=Steamboat+Springs,+CO&hl=en&ll=40.887294,-106.978421&spn=0.090324,0.083942&sll=40.454458,-106.799555&sspn=0.090651,0.083942&oq=Steamboat&gl=us&hnear=Steamboat+Springs,+Routt,+Colorado&t=m&z=14&layer=c&cbll=40.887294,-106.978421&panoid=5_5hOFoJdtUDhlrospBUCg&cbp=12,333.13,,0,37.64"]Steamboat Springs, CO - Google Maps[/ame]
The imagery date is 2009, though. Looks dern fun!!