It's been a few years since I was up there. Then, it was ALL gravel and the trucks travel VERY fast and didn't give ANYONE a chance. If you see the dust, find a place to pull over and hide as the flying gravel will make short work of your windshield.
A couple spare tires are also in order. Along with SEVERAL 5 gal. full gas containers. Last chance for gas was Cold Foot, then, so leave there "full up." Fill the cans in Fairbanks and top off the van in Cold Foot.
Beautiful drive but you must go prepared!!!! It is not for the faint hearted.
The "Sag" river parallels the road on the east side so you loose a lot of the 5 mile corridor on that side of the road unless you have a row boat or canoe (no motors). Strong current and too deep to wade. Good fishing though. Arctic char run about that time, Greyling good too.
If the herd is there hunting is good but LOTS of other hunters will be there too. If the herd isn't there, you'll have little to no chance. Walking much is VERY challenging in the tundra from "cabbage heads" to just wet everywhere.
There also used to be a "fly in" service available in "Happy Valley" -- don't know if it still operates or not.
Don't get me wrong, a very worthwhile trip, just go with good preparation and a BIG spirit of adventure.
Arne