Well, it'd be hard to do a Milepost anywhere else. Between Alaska and northwestern Canada (what's covered in the Milepost) there are, what, 20 or 30 roads? And most of the entries in the road logs are for things like "culvert over Fish Creek" and "campground next to Bear Lake" and "turnout for slow vehicles"--there just isn't a lot of stuff along the roads here!

I'd hate to see how thick a Milepost for California would be--heck, one just for Los Angeles County would be several thousand pages! Even travel through rural Wyoming or Colorado can't compare to the vast stretches of road devoid of human civilization here (not to mention the supermajority of the state that can't even be accessed by road...).