I-25 North Express Lanes: 120th to Northwest Parkway/E-470

Location: Denver, CO

The North I-25 corridor between US 36 and State Highway 7 is one of the most congested stretches of highway in the Denver metro area. This stretch sees an average daily traffic volume of 174,000 vehicles per day.

This project increases safety, capacity, and travel choice along a six-mile segment of I-25 by building one tolled HOV/Express Lane in each direction from 120th Avenue to Northwest Parkway/E-470.

Project scope included resurfacing the existing pavement with new asphalt, restriping the roadway to accommodate the new lane, and installing new concrete median barrier, lighting, and tolling infrastructure.

Contract Value


Prime Consultant

Hamon Infrastructure

Project Owner


Contract Format


Completion Date

June 2020

Contract Duration

17 months