Department of Transportation and Infrastructure (DOTI) Share: Government Agency Visit Website Request Info 201 W. Colfax Ave. Suite 608 Denver, CO 80202 (720) 913-8815 Facebook About Map About Denver's Department of Transportation & Infrastructure (DOTI) is a modern agency focused on increasing mobility and safety while reducing congestion and fighting climate change. What's Nearby? Distance: 5 10 15 20 25 50 mi.