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The WestConnect corridor extends from C-470 and Kipling to SH-93 and Marshall Road. Jefferson Parkway and Northwest Parkway will not be part of the scope of the WestConnect Planning and Environmental Linkages (PEL) Study. However, since these future connections could influence planning of the corridor, they are included in the study as alternatives. Segments that will be studied or referenced in the PEL are:
The Northwest Parkway is a four-lane, controlled access all-toll facility that opened to traffic in 2003. It extends from I-25 to 96th Street in the City and County of Broomfield. The facility is owned by the Northwest Parkway Public Highway Authority and is operated and maintained by Northwest Parkway LLC.
The Interlocken Loop extends from the 96th Street and Northwest Parkway intersection to SH-128 near the Rocky Mountain Metropolitan Airport. It is currently a four-lane arterial with traffic signals at major intersections.The City and County of Broomfield and the Northwest Parkway Public Highway Authority are in the process of identifying improvements to provide free-flow capacity between the Northwest Parkway and the proposed Jefferson Parkway.
The Jefferson Parkway extends from SH-128 to SH-93 and is planned as a four-lane, controlled-access toll facility. The Jefferson Parkway Public Highway Authority is managing the project. Preliminary engineering and right-of-way acquisition is currently underway. A Public and Private Partnership will likely be used to finance, design, build, operate and maintain the facility.
This section of SH-93 extends from SH-72 to Marshall Road in Boulder County. SH-93 is a two-lane state highway with traffic signals and turn lanes at select intersections and passing lanes along steeper grades.
SH-93 is a two-lane roadway with traffic signals and turn lanes at select intersections. The City of Golden recently completed a conceptual plan for both SH-93 and US-6 that includes a portion of this segment of SH-93. This conceptual plan provides four lanes of free-flow capacity (two lanes in each direction) for both local and through traffic with enhancements to mitigate noise impacts to adjacent Golden residents. The proposed improvements are designed to include one additional lane in each direction when certain traffic volume thresholds are met.
US-6 is a four-lane roadway through Golden with traffic signals and turn lanes at select locations. The City of Golden recently completed a conceptual plan for both SH-93 and US-6 that includes this segment of the WestConnect corridor. This segment includes the C-470 Extension, a 0.9 mile long four-lane controlled access facility under CDOT's jurisdiction that extends from I-70 to US-6. The terminus at US-6 consists of directional ramps for high-volume movements and a traffic signal for local street access.
C-470 is a freeway mostly built to interstate standards that extends from I-70 on the north to I-25 on the south. Construction started in 1980 with the first section opening in 1985. The remainder was completed in 1990. At that time, the highway consisted of two through lanes in each direction. The section between Kipling Parkway and Morrison Road (segment 1) currently retains this four-lane width. The section between Morrison Road and I-70 (segment 2) has since been widened to six lanes with three lanes in each direction.
Jefferson County is the fourth most populated county in Colorado. The county is projected to grow by 17 percent between 2010 and 2040.
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