Construction Update | March 19, 2026 

Lane Closure – 1900 West & 5600 South Intersection 

Earlier this month, crews closed a lane and implemented intermittent business access restrictions along 1900 West. A westbound right-turn lane closure at the 5600 South intersection will remain in place through the end of the month while crews complete curb, and sidewalk work.

The right-turn movement is shifted into the thru lane to maintain traffic flow. Business access continue to be maintained throughout this work. Drivers can expect a temporary pattern and delays during peak travel times. 

1900 West near 5600 South intersection facing south. 

Upcoming Work

Overnight Closure at I-15 & 5600 South (SR-97)

Crews will close the roadway beneath I-15 at 5600 South (SR-97), and all the interchange on/off ramps in mid-April to prepare for the opening of the SPUI interchange in it's final configuration. Drivers should plan ahead and expect delays.

A SPUI (Single-Point Urban Interchange) is designed to move traffic more efficiently by allowing all left turns at the interchange to be controlled by a single traffic signal.

Detour information will be shared in future updates.

5600 South (SR-97) and I-15 SPUI on/off ramps facing north.

Driver & Pedestrian Notice:

Drivers and pedestrians may notice intermittent construction activities as crews coordinate work around weather conditions and specialized operations. Traffic control devices, including barrels, will remain staged throughout the project area to maintain safe traffic patterns, protect work zones, and allow crews to mobilize quickly when conditions allow–even during periods when active construction is not taking place.

Construction activities will continue to shift throughout the project area as crews complete as much work as possible during winter conditions. Drivers and pedestrians are encouraged to use caution, plan for extra travel time, and follow posted signage and traffic control measures. 

     Along 5600 South near 1900 West intersection facing southwest.

Ongoing Activities

I-15 Lane Closures & Shifts

Crews will complete nighttime intermittent lane shifts and closures on I-15 in both northbound and southbound directions until March 20 for profile and concrete grinding activities. During this work, traffic will shift to the three middle lanes. Pavement grinding smooths the concrete surface to improve the ride quality for drivers. 

Plan ahead and expect delays during peak travel times. 

I-15 Nouthbound near 5600 South/Riverdale Rd. Exit facing northwest.

3100 West & 5600 South – Signal Prep and Activation

Crews completed installation activities that include steel signal arms and activating the traffic signal at 3100 West and 5600 South through early March. The signal will initially operate on a temporary timer until full signal connectivity is established along the corridor from 3500 West to 1900 West along 5600 South. 

Permanent coordination and connectivity with the other traffic signals along the corridor is anticipated to be completed this summer. Drivers should expect possible delays and intermittent backups during peak travel times while the signal operates on temporary timing. 

Along 5600 South and 3100 West intersection facing southwest.

Crews are continuing work along 5600 South (SR-97) under I-15 in the SPUI (Single Point Urban Interchange) area, which is an interchange design where traffic entering and exiting the freeway is controlled through one main signalized intersection. Crews are installing curb and gutter, completing removals, finishing earthwork and slopes. In addition, crews are completing hardware installation on bridge girders (beams) and setting junction boxes in preparation for upcoming concrete work. Once prep work is complete, final boxes will be set and UDOT fiber will be installed running both east and west.

With the new traffic pattern in place, drivers can expect occasional lane shifts, changing traffic movements, and construction equipment and crew members near the roadway. Please slow down, stay alert, and follow all posted signs while traveling through the area.

Along 5600 South and I-15 SB Off-Ramp facing northeast.

5600 South and Riverdale Rd. – Intersection & Signal Construction 

Crews are completing signal and pedestrian improvements at the intersection of 5600 South and Riverdale Rd. as part of the ongoing construction project. This includes work near the Union Pacific Railroad (UPRR) bridge and is expected to continue through the winter months. 

Additional signal work will take place along Riverdale Rd. During the next couple of weeks, drivers should expect a temporary right-turn closure while crews complete installation and foundation placement. As part of the permanent signal and roadway upgrades, crews will also be removing existing traffic-management equipment poles. Drivers and pedestrians are encouraged to plan ahead and use caution in the work zone. 

Along Freeway Park Dr. & Ritter Dr. near Riverdale Rd. facing northeast.

Final Paving Resumes This Spring on 5600 South & 1900 West  

Crews will complete the remaining paving work in the spring, once warmer temperatures return. Asphalt paving requires  specific temperature conditions to ensure long-lasting, high-quality results. While drivers may notice unfinished areas near 1900 West and 5600 South intersection, this work is intentional and temporary.

Why Paving Waits for Warmer Weather

Asphalt is produced at facilities called hot plants, where aggregates (rock and sand) are heated and mixed with liquid asphalt binder. This material must stay hot from the plant to the roadway so it can be properly placed, compacted, and bonded. Completing this work during the winter months can lead to cracks, poor compaction, and a shorter pavement lifespan. UDOT crews source asphalt from certified local hot plants that meet quality and safety standards, ensuring roads are built to last once conditions are right. Waiting for spring temperatures helps deliver smoother, safer, and more durable roads for Utah drivers. 

Crews place asphalt along I-15 in the median facing north.

5600 South – Intermediate Lane Closures

Through the winter months, crews will implement occasional intermediate lane closures along 5600 South in both directions to accommodate finalizing flatwork (curb, gutter, sidewalk) between 2700 West and 3500 West. Crews will maintain one lane in each direction. Drivers should plan for slower traffic and delays during peak commute hours.

5600 South (SR-97) and 3500 West corridor facing east.

Adjacent Area Projects 

In addition to construction on the 5600 South project, several nearby UDOT projects are currently under construction in the area. For more information, please contact the following project teams:

1800 North Interchange

Hotline: 385-383-6576

Email: 1800north@utah.gov

4400 South | I-15 & I-84 – Riverdale  

Hotline: 855-925-2801 (Project code: 3107)

Email: i84bridges@utah.gov

2000 West Interchange

Hotline: 888-556-0232 (ext. 4)

Email: 2000west@utah.gov

I-15 mainline work at 5600 South(SR-97) facing northwest.

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