CDOT and WestConnect Coalition complete transportation study

June 28, 2018 - Denver Metro Colorado/CDOT Region 1 - Study evaluated transportation options for C-470, US 6 and CO 93

JEFFERSON COUNTY — The Colorado Department of Transportation, along with the WestConnect Coalition, have completed a Planning and Environmental Linkages study of portions of C-470, US Highway 6 and Colorado Highway 93 between Littleton and Boulder.

The 2-year-long study evaluated options to reduce congestion, improve operational performance and safety, and address future transportation needs in this highly traveled corridor. Transportation improvement alternatives were developed and evaluated using local agency and public stakeholder input.

“The WestConnect PEL study has been a truly regional and collaborative effort among the coalition agencies, CDOT and the public,” said Paul Jesaitis, CDOT Denver metro area regional transportation director. “We considered a variety of alternatives to address the 32-mile corridor goals and have produced a regional plan that lays the groundwork for future environmental studies, allocating funding as it becomes available and eventually moving into construction.”

The study examined existing and forecasted transportation initiatives, considered current and anticipated problem areas, and identified and evaluated a reasonable range of potential transportation improvements to develop an implementation plan for projects to meet the operational, safety and capacity needs along the corridor, with respect for local agency plans.

The study evaluated the three unique segments of the corridor:

  • C-470 from Kipling to I-70/US 6 in south Jefferson County;
  • US 6 from C-470 to CO 58/CO 93 in Golden; and
  • CO 93 from Golden to Marshall Road (CO 170) in Boulder County.

The recommendations provided in the study were customized for each segment and included roadway expansion, intersection/interchange improvements, multimodal enhancements, and technology and corridor management considerations.

Through the work of CDOT and the WestConnect Coalition, the study received regional support and approval from 14 local, regional and state agencies with interests along the corridor.

“This region especially has a reputation for working cooperatively,” said Commissioner Tina Francone, Jefferson County District 3. “This has been a long process, but it is a hallmark of this County and the State of Colorado to set aside our differences and work together to move things forward.”

STUDY INFORMATION: To view the complete report, visit