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  • Northwest Quadrant Transportation Feasibility Study


    Jefferson County and the cities of Arvada, Golden, Lakewood, Westminster and Wheat Ridge commissioned the Northwest Quadrant Transportation Feasibility Study Adobe PDF Icon to increase mobility, improve safety and provide a higher level of service for transportation facilities in Northern Jefferson County during the next 20 years. The study includes recommendations, decisions and supporting documentation. 

    National Environmental Policy Act

    In 2003, the Federal Highway Administration (FHWA) and the Colorado Department of Transportation (CDOT) initiated a National Environmental Policy Act (NEPA) process to study the need, merits and impacts of potential transportation improvements in the Northwest Corridor of the Denver metropolitan area. The Notice of Intent to prepare an Environmental Impact Statement (EIS) appeared in the Federal Register dated July 21, 2003. It identified the proposed action as: “an improved connection between the western terminus of the Northwest Parkway in Broomfield County and the SH 58, I-70, or C-470 freeway systems to the south in Jefferson County.”

    Need for Funds

    In 2007 and 2008, nearing completion of the draft EIS, CDOT recognized that while transportation improvements in the northwest Denver metropolitan area are needed, federal and state funds are not available to meet these needs in the foreseeable future. The Northwest Corridor NEPA process was discontinued and the notice of intent was rescinded. NEPA language and related commitments were removed from the document, to a practical extent, resulting in a Northwest Corridor Transportation and Environmental Planning Study, View exit disclaimer policy page for links to third-party websites. which can serve as a foundation for future projects.

    The study presents information related to the potential benefits and impacts of a "no action alternative" and four build alternatives: freeway, tollway, regional arterial and combined. The combined has been identified as the recommended alternative.

    Jefferson County Parkway Public Highway Authority

    The Jefferson County Parkway Public Highway Authority View exit disclaimer policy page for links to third-party websites. was established in 2008 to complete the last section of the Denver metropolitan beltway, the Jefferson Parkway, through a public-private partnership to finance, design, build, operate and maintain the parkway.

    Last Updated: 3-13-2014