 and if we wait till it's completely broken down and the you know water started to wash away the underlayment on the street then it might cost a couple of million dollars a mile and you say you mean you could just maintain the street by seal coating it so the water never or doesn't penetrate to below the surface and start the cracking to begin with and i compared to painting a house i mean if you have a wood house but you keep it painted and maintained that wood house might last 100 years