Numerous studies have shown that asphalt pavements generally have a lower life cycle cost. The initial cost of asphalt pavement is usually less than concrete. In addition, an increasingly important factor is the traffic delay cost during construction or rehabilitation. You can't close down a busy road and spend weeks repairing it without costing businesses and individuals money – potentially millions of dollars. With asphalt, you can usually perform construction and rehabilitation operations at night and reopen the road to traffic the next morning.