Utilizing Digital Delivery for Utah’s I-15 Roadway Services

Digital delivery—the process of transferring data electronically rather than through physical means—was the key component in driving the design of a new interchange on Utah’s Interstate 15 (I-15) at Dry Creek Parkway. With Kimley-Horn serving as a major subconsultant to Horrocks, UDOT’s vision enabled not just the creation of the interchange but also the widening of Dry Creek Parkway for approximately three miles, expanding from two to five lanes, and the addition of a new grade-separated bridge over a dual-track railroad.

Elevating Our Roadway Services

Dry Creek Parkway is split across two different municipalities with multiple railroad crossings owned by two railroad companies. The project’s complexity necessitated coordination with the Bureau of Reclamation powerlines and more than 11 different utility companies that operate in the territory of the corridor. To navigate these challenges and effectively coordinate with stakeholders, our team employed several different visualization tools that were developed using our 3D model.

To expedite the project’s construction progress, our team split the work into two packages. This approach allowed for powerline relocations, the settlement of the new embankment at the I-15 interchange ramps, and the settlement at the grade-separated railroad crossing to begin before the remainder of the project was constructed.

We delivered our services as a hybrid digital delivery project, with the structures plans as a traditional plan set and everything else as MALD. This required our team to collaborate with stakeholders and contractors with varying levels of digital delivery experience, necessitating nimble adaptation and strategic communication. Throughout construction, our team has also continued to provide design services to support the contractor.

A Better-Connected Corridor

By leveraging our innovative digital delivery services and collaborative stakeholder engagement, the new I-15 interchange will be a tight diamond interchange that includes one to two lanes on each side of the on- and off-ramps and an auxiliary lane in the northbound direction between Dry Creek Parkway and 400 South. Dry Creek Parkway will also be widened to two lanes in both directions from Main Street in Spanish Fork to SR-51 (State Street) in Springville.

Additionally, the frontage roads will be re-aligned to maintain traffic flow and provide continued access to local businesses during construction. Upon anticipated completion in the summer of 2026, the project will alleviate congestion on I-15 and enhance transportation mobility and safety for residents and travelers across Utah.