(15th St.) across 15th St. in Denver, Arapahoe County, CO. Speer Blvd SE 0.15 miles from jct with I25 exit 212, NE (left) on Platte St. 0.2 miles, SE (right) on 15th St. 0.35 miles to the bridge overhead. (N39 45.174 W105 00.279) Photo by Mark & Clare Comstock 4-23-22.