We drove our sprinter B to Prudhoe Bay in 2010, just after Labor Day. There was a couple of rough stretches where they were grading the road but nothing was all that bad. We camped a few miles from Prudhoe on an access road to the pipeline, it was great. The scenery was gorgeous, the road had more paved sections that we expected. If you really want more information ask a similiar question on the Alaska forum here. Lots of folks have driven it. There is a nice BLM campground about five miles north of Coldfoot. We pulled over for approaching trucks and had no problem with rocks. Fuel should be available at both Coldfoot and Prudhoe but don't know if the businneses at the Yukon crossing would still be open.
