As the title would lead you to believe, an Ant Hill has disrupted a road I've been constructing. But, instead of being able to walk past it to the next stone and continue, when I attempted to use it the timer would tick up to 90% and fail when heading west. I was able to travel east from the stone and ran into the ant hill again. I then continued east all the way to the Milestone. After returning to the beginning of the road I tried using it again and it simply stopped at 90% again.
I tried a different character and even had another player come test it, but we can no longer travel on the road. I'm a bit perplexed.
Now, I figure this will sort itself out once the ant hill de-spawns, but until that time, the road is completely unusable. I'll update again ~20min and see if it works.
*edit*
I'd also like to mention the first time an ant hill blocked the road, it did not have this effect. So this might be hard to narrow down a specific cause.