Greeley to Replace US 34 Lights With Interchanges
The MERGE project will swap traffic signals at 35th and 47th avenues for grade-separated interchanges, with construction expected in 2028.
Updated on Nov. 11, 2026 in Utilities
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The City of Greeley and the Colorado Department of Transportation plan to remove signal lights at Highway 34 and 35th Avenue and at Highway 34 and 47th Avenue, replacing them with grade-separated interchanges. The work is part of the MERGE project, launched in 2015, and construction is expected to begin in 2028.
Why it matters
The project aims to improve safety, mobility, and connectivity along the US 34 corridor in Greeley. Replacing long-standing signals with overpasses and underpasses is intended to keep traffic moving through the intersections.
The MERGE project is estimated to cost upwards of $190 million, and the City of Greeley is contributing $31 million toward it. The filing does not detail funding sources for the remaining balance.
The players
City of Greeley
The City of Greeley is a municipality in Weld County, Colorado, and a co-sponsor of the MERGE project.
Colorado Department of Transportation
The Colorado Department of Transportation is the state agency that oversees the state highway system and co-leads the MERGE project with the City of Greeley.
The details
The MERGE project will remove the existing traffic lights at the two Highway 34 intersections and install grade-separated interchanges that use overpasses and underpasses to move traffic between roadways on different levels. The plan also includes a Mobility Hub at Centerplace, a pedestrian underpass, and upgrades to infrastructure for reliability and long-term performance.
Timeline
2015: The City of Greeley and CDOT launch the MERGE project.
2028: Construction is expected to begin.
2030: The project is expected to be completed.
Roadmap
The MERGE project continues a decade-long effort launched in 2015 to address safety and mobility along the US 34 corridor through Greeley. Replacing signalized intersections with grade-separated interchanges reflects a broader approach of separating vehicle and pedestrian movements to reduce conflict points on busy arterials.
Drivers who use the US 34 intersections at 35th and 47th avenues will eventually pass under or over the cross traffic instead of stopping at signals. Residents will also see a new pedestrian underpass and a Mobility Hub at Centerplace once the project is built.
The takeaway
The MERGE project shows how Greeley is planning long-term changes to a major highway corridor, with construction still several years away. Residents can expect the most noticeable effects to come after the 2028 start date.
What happens next
Construction on the MERGE project is expected to begin in 2028, with completion anticipated in 2030.
Further reading
Explore more on Utilities coverage for the infrastructure context behind this Greeley project.
Source note: This article includes information reported by Retro 102.5.
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