Park City Begins Transmission Line Undergrounding Project

Work on Kearns Boulevard starts April 7, bringing lane reductions and detours through mid-May.

Apr. 2, 2026 at 11:04pm

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A vibrant, abstract silkscreen print featuring a repeating grid of stylized utility poles in neon shades of blue, green, and orange, conceptually representing the undergrounding of power lines in Park City.A bold, colorful celebration of Park City's efforts to modernize its power grid and improve the community's visual landscape.Park City Today

Park City Municipal and Rocky Mountain Power will begin the first phase of a transmission line undergrounding project on April 7. The project, approved in 2024, involves moving high-voltage overhead transmission lines underground through the Bonanza Park area. Work will start on Kearns Boulevard and continue through mid-May, with lane reductions, diversions, and repaving scheduled during this period.

Why it matters

Undergrounding the transmission lines will provide several benefits to Park City, including adding available cemetery plots, reducing wildfire risk, eliminating unsightly transmission towers, and removing a height restriction that has limited redevelopment options in the Bonanza Park area.

The details

The project will begin on Kearns Boulevard, with westbound traffic diverted at Bonanza Drive from April 7-12 and eastbound traffic diverted at Park Avenue from April 13-17. From April 20 through May 15, Kearns Boulevard between Park Avenue and Bonanza Drive will have one lane of traffic in each direction from 7 a.m. to 4 p.m. Repaving on Kearns Boulevard is scheduled for May 18-22. Work will then shift to Woodbine Way in July, with substation work continuing through August and September. Phase one is scheduled to be completed in October 2026, with phase two, which will bring the new underground lines into service and remove the existing towers and overhead lines, finishing in late spring 2027.

  • Work begins on Kearns Boulevard on April 7, 2026.
  • Westbound traffic on Kearns Boulevard will be diverted at Bonanza Drive from April 7-12, 2026.
  • Eastbound traffic on Kearns Boulevard will be diverted at Park Avenue from April 13-17, 2026.
  • Kearns Boulevard between Park Avenue and Bonanza Drive will have one lane of traffic in each direction from 7 a.m. to 4 p.m. from April 20 through May 15, 2026.
  • Repaving on Kearns Boulevard is scheduled for May 18-22, 2026.

The players

Park City Municipal

The local government of Park City, Utah, which is partnering with Rocky Mountain Power on the transmission line undergrounding project.

Rocky Mountain Power

The electric utility company that owns and operates the high-voltage transmission lines that are being moved underground in Park City.

John Robertson

The city engineer of Park City, who stated that the project is an important long-term investment in the city's infrastructure.

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What they’re saying

“This is an important long-term investment in Park City's infrastructure, and we know the work this spring will require some patience from drivers and neighbors. Short-term disruptions are expected, but the benefits will be felt for years to come. We're committed to keeping the community informed every step of the way, and we appreciate everyone's flexibility this season.”

— John Robertson, City Engineer

What’s next

The project will shift to Woodbine Way in July, with substation work continuing through August and September. Phase one is scheduled to be completed in October 2026, with phase two, which will bring the new underground lines into service and remove the existing towers and overhead lines, finishing in late spring 2027.

The takeaway

This transmission line undergrounding project is a significant infrastructure investment for Park City that will provide long-term benefits to the community, including increased cemetery space, reduced wildfire risk, and more redevelopment opportunities. While the construction will cause short-term disruptions for drivers and residents, the city is committed to keeping the public informed and appreciates the community's patience and flexibility.