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Railroad Quiet Zones


In response to concerns expressed by community members regarding the impacts of train horn noise, city staff is planning several “quiet zones” for railroad crossings impacting Boulder.

Quiet zones are railroad crossings that include physical infrastructure and warning systems so that train engineers are not required to sound the train horn at the crossing. The city has been awarded a $1.2 million in grant funding from the Denver Regional Council of Governments to advance quiet zones for the Boulder community. This grant is expected to fund the Pearl Parkway and 47th Street crossings. Other funding sources are being pursued for the other quiet zones projects. 

Upcoming Projects and Next Steps

View the latest quiet zones brochure to see the list of projects and background.

2017:  $1.2 million in grant funding was received from the Denver Regional Council of Governments for Quiet Zones design and construction

Feb. 2018:  Preliminary design of crossing at Pearl Parkway, 47th Street, 55th Street  (north of Arapahoe) and 63rd Street (north of Arapahoe)

Spring and Summer 2018:  Final design, review and approvals

Late 2018/early 2019:  Construction of improvements at Pearl Parkway and 47th Street crossings

Construction of the 55th and 63rd Street crossings (north of Arapahoe) may also be possible though the $1.2 million grant. The Valmont Road quiet zone improvements are being constructed through a separate transportation capital improvement project. Project timelines for these projects have not yet been determined. 

The city will continue to pursue other funding opportunities for any remaining locations in conjunction with Boulder County and adjacent municipalities.

For more information about quiet zone projects in Boulder County, please contact Matt Wempe at the Boulder County Department of Transportation at   [email protected] .   

Project Prioritization

The city conducted a public engagement process with the community to inform a prioritization and phasing plan for implementation. Projects will be prioritized as follows: Map of six City of Boulder quiet zone projects and three Boulder County projects along State Highway 119.

  1. 47th St.
  2. Valmont Road
  3. Pearl Parkway
  4. 63rd St. at the Diagonal Highway
  5. 55th St. north of Arapahoe
  6. 63rd St. north of Arapahoe

The community provided input on a number of factors, including the number of people living and working within 0.5 miles of the railroad crossings, type and proximity of adjacent land uses (existing and /or planned), as well as street characteristics, safety, and costs for installation, plus any potential on-going maintenance responsibilities.

These were conducted by the City of Boulder in partnership with Boulder County and the Federal Railroad Administration. To view the previous two open house presentation materials and boards, please see the links below. 

Feb. 23, 2017 Open House

Dec. 15, 2016 Open House

How to stay updated 

This webpage will be updated as the projects progress.

You may also  join our list to receive project updates by email.

Have a comment?

We want to hear from you! If you have any comments or questions about the railroad quiet zones project, please submit your comments below. Feedback will be shared with the project team.

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