US 85 & US 34 Interchange Improvements

Project Complete

About the Project

The Colorado Department of Transportation and contracting partner, Jalisco International, Inc., have completed improvements at the interchange of US Highway 85 and US Highway 34 in Greeley near Garden City. Commonly known as "Spaghetti Junction," the interchange now features upgrades designed to enhance mobility, improve roadway visibility, and reduce the risk of crashes.

The project focused on increasing safety and driver confidence with several improvements, including the installation of new guardrails, upgraded signage, and refreshed roadway striping throughout the interchange. These enhancements improve lane recognition and help prevent vehicles from unintentionally leaving the roadway.

In addition, many of the outdated sign structures have been replaced to meet current highway standards, making it easier for drivers to navigate the area safely and efficiently.

Another key feature of the project is the widening of roadway shoulders. This improvement provides greater space for vehicles, particularly on narrower segments of the corridor, enhancing overall safety and improving traffic flow.

Project Facts

  • Construction Cost: $4 Million
  • Contractor: Jalisco International, Inc.
  • Timeline: October 2024 and anticipated through June 2025
  • Location: The intersection of US 85 and US 34, known as Spaghetti Junction 
    • Nearest Towns: Greeley, Garden City
    • Mile Point(s):
      • US 34: MP 111.9 to MP 113.8
      • US 85: MP 265.1 to MP 267.2
      • US 85 Business: MP 265.1 to MP 0.7
    • County: Weld

Project Benefits

  • Install new guardrails at the intersection of US 85 and US 34 and improve signage and striping; this will reduce crash occurrences and improve lane recognition
  • Widening the shoulders along the corridor will boost safety and mobility for motorists on narrow two-lane highways, creating a safer travel experience

Work Schedule

  • Daytime work hours are from 7 a.m. to 5 p.m., Monday through Friday
  • Periodic overnight work between the hours of 9 p.m. and 6 a.m. during overhead sign replacement

Traffic Impacts

Motorists can expect the following impacts during the period of construction:

  • During construction, motorists can expect single and alternating lane closures
  • Please obey posted speed limit signs
  • Construction vehicles entering and exiting the work zone