In the USA, the construction crew will show up, tear everything up, and put out lots of traffic cones, ... and then disappear.
Yes, same technique in Italy. During a trip I counted something like 10 different areas with restricted lanes (or lane changing side) and traffic cones on the highway, some as long as 15km, and not a single worker to be seen. One such area has been like that for over 15 years.
In France it depends. I like the technique they use on the Paris beltway: they shut it down at 10pm, move all the equipment at once under floodlights, work on only 10 to 50 meters, clean up everything and reopen by 6am. Repeat the next night on the next 10 to 50 meters. But it's expensive and the planning must be held tight no matter what otherwise the city can shut down the next day!