nothing like Japan in terms of roadworks, they mostly happen at night or during week ends to minimize disruptions
they are VERY well signaled, and you will always find a battery of older gents to show you the way through the construction site and plenty of lights at night, you cannot really miss it!!
same thing happens if a road is closed for demonstrations, special visits, hanami etc. an army of policemen will be here standing every 5 meters, ensuring all goes well