Rode the first two north-bound sections of the WABDR on the way to the Touratech-USA Rally last weekend.
Carson to Packwood and Packwood to Ellensburg - all clear, no reroutes needed.
Expect a few patches of snow on the first section and about 10 miles of rutted muddy dirt road on the second section. Great variety of terrain, road surfaces and scenery!
See that broken limb behind my bike? Jousted my handlebar end, pitching me off the bike high-side going about 30 MPH - be VERY cautious with overhanging branches!