We’ve had rubberized asphalt overlaying the concrete on Arizona freeways for decades. Smooth and quiet, Baby!
I take back the part about it not being hyped as environmentally friendly. The rubber is made from recycled tires. I sure they must have pushed that angle.
Was the asphalt in Cali a top course over concrete, or was it just asphalt?
I agree. I greatly prefer driving on rubberized asphalt!
Yes... Tires. It did have the ground off level old asphalt road bed as support under it. But they did lay it thick per Ca engineer standards. Probably too thick because of the words “California Engineers”. :)
But seriously it was so soft that in the summer a big rig would leave tire divots if it sat on it more than an hour. When you tried to jack up an axle for a tire repair the jack would leave a 3 inch square hole in the road because it sank in two inches.