The purpose of this Manual is to provide guidance on preparing and processing documents that comply with NEPA and other applicable state and federal environmental laws affecting transportation projects in Colorado. This Manual provides references and links to related federal and state laws, executive orders, regulations, and policies. It also provides "best practice" examples for various compliance processes where appropriate. It is intended that...

Project Locator (ProLo) is a geographic application on the web that contains detailed information about Long Range Planning (LRP) corridors and Statewide Transportation Improvement Program (STIP) projects. An interactive map is available for users to search and locate corridors and projects throughout Colorado.

A collection of short videos about the Colorado Department of Transportation, Colorado highways conditions and costs, "smart roads", and other forms of transportation such as public transportation and bicycles.