Transportation Studies

Regional Studies

Arapahoe Road Corridor Study

The Arapahoe Road Corridor Study is an 18-month study to examine alternatives for improving mobility, accessibility and safety along Arapahoe Road. The goal of the study will be to identify a long-term plan for Arapahoe Road (from I-25 to Parker Road, and between I-225 on the north and E-470 on the south) that balances regional mobility with local community needs. The study will consider all modes of transportation in this travel corridor, including mass transit, pedestrian, and bicycle traffic.

The Project Partners include: Arapahoe County, Greenwood Village, the City of Centennial, the Regional Transportation District, and the Colorado Department of Transportation. The engineering firm of David Evans & Associates is leading a team to examine alternatives from improving mobility, accessibility, and safety along this major arterial.

Visit the project web site for updates on the progress of the study. For more information on public involvement, please email Heather Halpape, Media Relations or contact at 303-796-8888.

C-470 Corridor Project

In accordance with the Federal Highway Administration (FHWA), the Colorado Department of Transportation (CDOT), through its consultant team of Wilson & Company and PBS&J, has initiated the C-470 Corridor Project. The project consists of an Environmental Assessment (EA) along the southern reach of the Corridor and an Express Lanes Feasibility Study (ELFS) from South I-25 to West I-70. The EA identifies the future needs, then examines improvements that meet those needs, including the number of travel lanes, interchange modifications and other major capacity improvements, as well as alternative modes of transportation. The EA has taken approximately three years to complete.

The Express Lanes Feasibility Study (ELFS) examined the feasibility of tolled express lanes to address congestion along the corridor from South I-25 to West I-70. The study results were incorporated into the EA as one of the examined alternatives. The Corridor is bordered by three counties (Arapahoe, Douglas, and Jefferson) and seven cities (Centennial, Greenwood Village, Golden, Lakewood, Littleton, Lone Tree and Morrison.)

Public input is a critical component of the project. Visit the project web site for updates on the progress of the study. For more information, please email Wilson & Company, Inc. or contact at 303-297-2976.