1. Plan


  2. Community Engagement


  3. Design


  4. Build

Current Phase

Project Overview

The Iris Avenue Transportation Improvements Project will re-design and construct street enhancements to this important east-west street to make it safer, more comfortable and more connected for all travelers.

The project will:

  • increase mobility choices
  • improve safety for everyone
  • make walking, bicycling and taking transit more attractive and convenient
  • improve connections to local and citywide destinations

Core Arterial Network

Iris Avenue is the second of three priority corridors in the city’s Core Arterial Network (CAN) initiative.

The CAN is a connected system of protected bicycle lanes, intersection enhancements, pedestrian facilities and transit facility upgrades. This connected system will help reduce the potential for severe crashes and make it more comfortable and convenient for people to get where they need to go along Boulder’s main corridors. The CAN initiative is one of City Council’s top ten priorities.

Provide Your Input

Community engagement opportunities will be available in 2023. Sign up to receive monthly transportation email updates, including future engagement opportunities for the Iris Avenue project.


Project planning, community engagement, and design will begin in spring 2023. This work will take about one year to complete. Construction of final design will follow once the city secures funding.

Related Projects 

Crosswalk Improvements

In fall 2023, we plan to construct pedestrian and bicycle enhancements to Iris Avenue at the 15th Street crossing. We received funding from the Denver Regional Council of Governments (DRCOG) Community Mobility Planning and Implementation (CMPI) 2019 grant program to improve three crosswalk locations in 2023, including at this crossing.

While these crossing improvements support our CAN goals, they are not part of the Iris Avenue Transportation Improvements Project. Learn more about the city’s Pedestrian Crossings.