I-70B East of Third Street Improvements in Grand Junction

About the Project

The Colorado Department of Transportation and prime contractor, Native Sun Construction, will be performing a safety and mobility improvement project in Grand Junction on I-70B. The project will focus primarily on the reconstruction of I-70B (Pitkin Avenue) and I-70Z (Ute Avenue) between Third Street and Sixth Street. This is the seventh in a series of phased improvements along I-70B. It follows the I-70B South of Rood Improvement Project (Phase 6), which was completed in October, 2025.

In addition to the roadway reconstruction, work will also include:

  • Concrete sidewalk installations for better pedestrian mobility and Americans with Disabilities Act accessibility
  • Drainage improvements
  • Utility upgrades
  • New traffic signal installations
  • Landscape beautification efforts

These safety and mobility improvements were identified during the 2008 Environmental Assessment to address congestion, provide effective business access along the corridor and bring multimodal upgrades for a safer and more comfortable travel experience for drivers, pedestrians and cyclists.

I-70B is the backbone of the transportation system in Grand Junction, serving as a gateway to regional retail, interregional connections, commuters, employment centers and other local institutional facilities, recreational facilities and neighborhoods. This project is part of CDOT’s 10-year plan for improvements statewide.

Work this Week & Lane Closures for I-70B East Third Street Improvements in Grand Junction

Project Facts

  • Construction Cost: $12.5 million
  • Contractor: Native Sun Construction Inc.
  • Timeline: February 2026 to December 2026
  • Location: I-70B (Pitkin Avenue) and I-70Z (Ute Avenue) from approximately Third Street to Sixth Street along Pitkin Avenue
    • Nearest Town/City: Grand Junction
    • Mile Point(s): MP 5.5 to 5.78
    • County: Mesa
Map showing a phased timeline of completed and ongoing I-70B improvements. Currently, Phase 7 is underway, focusing on upgrades between Third and Sixth Street.
Map showing a phased timeline of completed and ongoing I-70B improvements. Currently, Phase 7 is underway, focusing on upgrades between Third and Sixth Street.
Final design rendering of planned upgrades for Phase 7 of the I-70B improvements.
Final design rendering of planned upgrades for Phase 7 of the I-70B improvements.

Project Benefits

  • Providing improved street connections and mitigating congestion for easier business access
  • Offering multimodal enhancement for greater pedestrian safety and accessibility
  • Upgrading utilities for more resilient and long-lasting city infrastructure

Work Schedule

  • The project is anticipated to begin in February 2026 and continue to the end of the year
  • General working hours will take place from 7 a.m. to 5 p.m., Monday through Friday
  • Night and weekend work will be limited, but is anticipated intermittently throughout the course of construction

Traffic Impacts

  • Drivers can expect both Ute and Pitkin Avenue to be reduced to a single-lane.
  • Additional closures will occur intermittently throughout the course of construction with detour routes in place
  • Bicycle and pedestrian detour routes will be in effect while new sidewalks and bike lanes are constructed in the surrounding area
  • Expect parking restrictions in active work zones. At least one point of access to businesses in the area will be maintained at all times
  • Bus routes may be impacted during construction. Please continue to check Grand Valley Transit and Bustang resources for more details on schedule and route changes
  • Refer to COtrip.org for real-time travel conditions and road closures