I-15 Southbound Project

Beginning in Spring 2018, the Utah Department of Transportation began work to add a southbound lane to I-15 between S.R. 201 and 12300 South and expand 7200 South, west of the freeway.

New Construction Activities

Last Updated: Friday, December 6, 2019

Due to equipment/supply issues, the pile driving of bridge supports at the Union Pacific Railroad structure on 7200 South has been delayed. It is expected to begin in the next week, as equipment is made available. This work will take place during the day. Area businesses and residents may notice increased noise and vibrations. This work is expected to last a few weeks.

7200 South Traffic Control Changes

Due to the nature of the work on the railroad bridge over 7200 South, it can only be completed between specific hours, including daytime work. To accommodate this work, UDOT has given authorization for the contractor to close one lane during daytime hours, outside the peak commute times as outlined below. These closures will occur intermittently through the end of the project.

    • Eastbound Lanes
      • Monday through Friday: 9 am to 3 pm and again from 6:30 pm to 5 am
      • Daytime and night-time Saturday and Sunday
    • Westbound lanes
      • Monday through Friday: 9 pm to 5 am
      • All day Sunday

Drivers in the area are advised to use caution in the construction zone and observe all posted signage.

Project Overview

To improve traffic flow and reduce congestion, UDOT is adding a southbound lane to I-15 between S.R. 201 and 12300 South and expanding 7200 South, west of the freeway. The I-15 Southbound project will use $180 million dollars in state funds, which accounts for the environmental study, design and construction. Work will include:

  • Adding a lane to southbound I-15 between S.R. 201 and 12300 South in Salt Lake County.
  • Widening 7200 South to three lanes in each direction from I-15 to Bingham Junction Boulevard in Midvale.
  • Modifying the I-15 interchange at I-215 to improve traffic flow.

Contact Us


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For project-specific updates: @i15southbound
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