Central City Parkway
Official page of the new facility connecting Interstate 70 and Central City. Site includes maps, background, and FAQ.
Colorado Department of Transportation
Supervises road construction, maintenance, and weather-related closures, and promotes recreation, tourism, and transportation safety.
E-470 Public Highway Authority
Maintains the tolled eastern beltway of Denver which uses the EXpressToll electronic toll collection system. Official site includes toll rates, maps, and an FAQ.
Front Range Toll Road
Official page on this proposed facility which would run east of Interstate 25. Site includes a map and full text of the related bill.
The Highways of Colorado
Contains comprehensive information, including history and essays.