City of Greeley roundabout to bring full intersection closure
Published on March 02, 2026
Construction of a roundabout at 59th Avenue and O Street will kick into high-gear March 9 as the intersection will be fully closed while work is done to transform the intersection into a roundabout. The closure, approved last Wednesday by the Weld County Board of Commissioners, will last through June 26, 2026. Detours can be viewed on Weld County’s Road Advisory Map.
The City of Greeley will manage the project, having hired Connell Resources Inc. to complete construction. The county, which has jurisdiction of O Street west of 59th Avenue, signed an intergovernmental agreement with the city in 2023 to contribute a little more than $1.6 million toward the project.
This type of partnership between Greeley and the county is not new. In 2022, when the county built a roundabout north of Greeley at 35th Avenue and O Street, the city pledged $1.6 million to the effort.
“This improvement is mutually beneficial to Greeley and Weld County residents, and we’re pleased to assist Greeley in the same way the city has assisted us in the past,” said Jason Maxey, Weld County Commissioner Chair Pro Tem. “We know road construction and detours can be inconvenient, so we appreciate the public’s patience as Greeley works to complete this improvement, which we believe will be beneficial for years to come.”
The roundabout comes as a solution to increase safety and efficiency at the intersection and to promote better traffic flow. The intersection sees heavy traffic, especially during the evening hours. More than 11,000 vehicles pass through the intersection daily, according to the Weld County Department of Public Works.
This roundabout follows others at county intersections, which have also eased traffic flow — 35th Avenue and O Street (2022), WCR 54 and WCR 17 (2020), WCR 74 and WCR 33 (2024), WCR 6 and WCR 13 (2025).
The project will also include milling existing asphalt and applying new asphalt from the intersection of 59th Ave. and O St. to Colorado Highway 392. Greeley and Weld County share jurisdiction of the road and have agreed to a 50/50 cost-share to complete the improvement.
Questions and more information
Those with questions or seeking more information about the roundabout project can reach out to Roch Labossiere, Civil Engineer IV with the City of Greeley’s Public Works and Transportation Department, by calling (970) 617-8514 or emailing roch.labossiere@greeleygov.com.