The Christian Science Monitor reports there are some 130,000 square feet of rubberized sidewalks in about 60 North American cities.

The premolded rubber squares (2' x 2' x 1.5") are cut to fit the job.

Each square foot of rubberized sidewalk contains almost one tire. The price of the rubber square is a bit more than two times the cost of concrete. However, one District of Columbia rubber sidewalk installation is credited with saving 35 aging trees. The installation was so shallow that the rubber surfacing was placed over the roots without needing to trim the roots, a procedure that would have been required with the deeper installation of concrete surfacing.

For more info, visit rubbersidewalks.com