3 ms·
I would guess that within about 10-20 years of non-use they would be overgrown to the point of invisibility. Joints are tooled/cut every 20 feet (I think?) and
by chadgeidel 10y ago
I would guess that within about 10-20 years of non-use they would be overgrown to the point of invisibility. Joints are tooled/cut every 20 feet (I think?) and grass has a habit of growing everywhere. The individual "sections" would remain in place of course, but growing things and erosion would push the joints further and further apart every season.
IMHO - the pristine unbroken roadways would be like that for only a few years/maybe a decade.
- angersock 10y agoI'm not sure about that...the highways they put into are often more than three feet deep all told.
- chadgeidel 10y agoIt's highly unlikely (due to cost of materials) that there would be more than 12 inches of concrete on a highway. There would maybe be 3 feet of depth including base material (dirt, gravel, or other engineered fill types). You would only see that depth of concrete on an airport runway or where the aircraft are parked. I can't seem to find anything definitive about US road depths ATM.