If you haven't used Waze before, its a road based GPS app where everyone who is using it can place a marker for trouble spots. That marker can be slow traffic, a cop, whatever, then other users can use that information to choose alternative routes or slow down so you don't get a ticket. If you could take Waze and trail-ize it, then the trail manager could pull up their trail system on their computer and see if anything is being reported.

Then again, you could just walk into the KT office, or call them and tell them where the blockage is.