Project History

Although the North I-25 corridor still has the appearance and feel of a rural environment, it is undergoing a transformation from rural to urban.

Over the past 10 years, the corridor and surrounding communities from 120th Avenue to SH 7 have been developing at a rapid pace. New development in Thornton, Westminster, and Northglenn includes the St. Anthony Hospital, and large retailers such as Cabela's, Lowe's and Walmart.

Why this project is necessary

An interim project is necessary to address the existing and impending traffic congestion; this is based on current and future residential and business growth, as well as increasing traffic projections in the surrounding area.

Project Milestones

  • Wednesday, June 8, 2016: Public Open House
  • Thursday, July 7, 2016: Groundbreaking Ceremony


Therefore, CDOT has allocated $55 million in funding through the Responsible Acceleration of Maintenance and Partnerships (RAMP) program to extend the tolled Express Lanes currently being built on I-25 between US 36 and 120th Avenue. Extending these Express Lanes to the north will help support this important economic growth.

In addition to RAMP funding:

  • HSIP has provided $6.5 million.
  • Bridge Money provided $1 million
  • Surface Treatment provided $12 million.
  • Water Quality Fund provided $1.1 million.
  • A state commercial loan financed $22 million.

In total, the project's $97.5 million in funding will extend the construction limits to Northwest Parkway/E-470.

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