29th at Columbus has been a work of art for a while now. What's been there a while are the mosaic murals like this one, on the 29th Street side of the north tower.
I'll show more of the towers — and the murals inside — in a minute. But I wanted to say that the Tucson Arts Brigade is working on the murals as a community project. They meet every Thursday afternoon. There are details (and more of their projects!) on TAB's murals page.
Here's our announcement.
Update (September 16, 2012): Since I took these photos, more painting has gone on. There are more photos in TAB grand opening, overpass update.