There's been a lot of ugly talk about the plan to replace the crumbling I-70 viaduct. But it inspired something beautiful this past year: 'Duct Work, a project that put 38 street artists to work creating murals under the viaduct at 46th Avenue and York Street. The viaduct is slated for demolition by 2018, but in the meantime, it's a great urban canvas. "We want to make sure we get the whole viaduct painted eventually, so we're going to have lots of chances for more artists," says organizer Kendall Peterson of CIG, who worked with the Colorado Department of Transportation, Urban Arts Fund and North Denver Cornerstone Collaborative to create this massive urban-art project, curated by renowned local artist Yiannis Bellis. Contributors to the mural include Thomas Evans, Ricks, East, Jolt, Tuke One, Robin Munro, Jesse Frazier, Patrick Kane McGregor, Koko Bayer, Chris Haven, Thomas Scharfenberg, Sandra Fettingis, Paige Madison and many more; enjoy their work while you can.