Lost and Found Art: Hint #2

Still no guesses on where the mystery murals are. Go here to see what they look like and here for the first hint.

The second hint is visual. Here is the setting for the graffiti murals. You can see them on the retaining wall in the middle of the photo. And, yes, that is a leaf-strewn, abandoned road.

What is the road's name? How do you get to it?

Tomorrow: The final hint.