It seems that by the time they finish redoing a stretch of the expressways around here, it’s time to start over again where they began.
Laying concrete roadways takes a lot of time, but it lasts along time unless there are construction errors. I’ve been on road trips where a 10 mile 2 lane road can be resurfaced with asphalt in a couple of weeks or so. One week to remove the old asphalt, reprocess it and lay the new new road.