(https://farm8.staticflickr.com/7422/10223737705_758ce5211e_c.jpg)
I was wondering why the walls on some bridges are painted at the bottom like the overpass in the picture here? I have seen that in many places in my travels, especially in the North-East this is quite common.
Either to cover up graffiti, or like in Wisconsin, to make the bridge more attractive.
Would there be any protection against salt spray splashes with paint ?
I park on a slab in my back yard, and just the salt dripping off my rig for 10 years is really rotting out the concrete. I'm thinking cars splashing salt on a load bearing concrete wall might be of some concern.
But I am just speculating.
Thompson's water seal anyone? ;)
I thought about graffiti too, but usually they try to match it with the color of the natural concrete. Plus, I actually used to see it a lot back in the early 70's under many of the Garden State Parkway underpasses with the bottom half green even back then long before graffiti became a problem outside of the big cities.