When it comes to parking decks, concrete is an ideal building material. It’s solid and durable, and it will serve you well for decades. It’s also suitable for paving but is used less frequently than asphalt. Asphalt costs about half as much as concrete, and it doesn’t take nearly as long to cure. You can drive on a freshly paved asphalt road almost immediately, but concrete takes much longer to cure. Asphalt needs to be repaired more frequently than concrete, but it costs about half as much.