Highway Art

As the metro area sprawls, more and more highways are needed to enable we residents to move more quickly from place to place. Of course, highways with their heavy traffic create lots of noise for the adjacent residential neighborhoods. That's fixed by building high, concrete walls to deflect the sound ways up and over the houses. Of course, high concrete walls are not very pretty, so they are made more attractive by the addition of stylized Anasazi art symbols every so often, like this: a desert tortoise perhaps?

I applaud the effort, but I have always found it interesting that the artwork is on the side facing the traffic, as if the drivers in that mess didn't have plenty of other stuff to look at. The poor sods with the high walls in their back gardens don't have artwork on their side.