Construction Update | March 26, 2026 

Overnight Closure at I-15 & 5600 South (SR-97) – April 10 

Crews will close the roadway beneath I-15 at 5600 South (SR-97), and all the interchange on/off ramps on Friday, April 10 from 7 p.m. to 7 a.m. to prepare for the opening of the SPUI interchange in it's final configuration. Drivers should plan ahead and use alternate routes. 

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.

Underneath I-15 at 5600 South (SR-97) SPUI  interchange facing northeast.

Upcoming Work 

Traffic Shift along 5600 South (SR-97) 

Crews will be shifting traffic along 5600 South between 2000 West and the Union Pacific Railroad (UPRR) bridge starting next week through early spring to accommodate paving, striping and the roadway's final configuration. 

Drivers should anticipate a new traffic pattern, as well as as intermittent daytime and nighttime lane closures in the area. Follow posted signage and use caution while traveling through the work zone.

Along 5600 South (SR-97)  near 2200 West intersection facing west.

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

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. 

I-15 Lane Closures & Shifts

Crews will complete nighttime intermittent lane shifts and closures on I-15 in both northbound and southbound directions through the end of March 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.

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.

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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