UDOT Proposes Phase 1 Revisions for Legacy Parkway and I-15 Widening Projects

The Regional Growth Technical Advisory Committee (TAC) for the Salt Lake Area has made significant strides in planning for future transportation projects, as discussed in their recent meeting on July 30, 2025. A key decision was made to amend the Regional Transportation Plan (RTP), which outlines essential projects and funding strategies through 2050.

The committee emphasized that the RTP is a dynamic document, subject to adjustments based on funding availability, local needs, and environmental considerations. The amendment process includes thorough reviews, public input, and air quality conformity assessments, ensuring that the planning remains rigorous and responsive to changing circumstances.

Among the notable amendments is the proposal to expedite the widening of Legacy Parkway. This project aims to add a lane in each direction between I-215 and the I-15 interchange in Farmington. The Utah Department of Transportation (UDOT) has determined that moving this project to phase one will enhance traffic flow during the ongoing I-15 construction, potentially saving up to $200 million and reducing construction time by 9 to 12 months. This strategic shift is expected to create a safer working environment and improve overall traffic conditions.

Additionally, the committee discussed the I-15 widening project in Box Elder County, recommending its advancement to phase one as well. This change is deemed necessary due to heavy truck traffic in the area and aligns with financial assessments that favor widening over the previously planned operational passing lanes.

The amendments are designed to improve regional connectivity and safety, particularly during the construction phases of major projects. The committee's analysis indicates that these changes will lead to reduced vehicle hours traveled and better traffic management, aligning with the broader Wasatch Choice vision for sustainable growth.

As the TAC moves forward, these amendments will play a crucial role in shaping transportation infrastructure in the Salt Lake area, ensuring that projects are not only timely but also beneficial to the community's long-term goals. The next steps will involve further reviews and approvals, paving the way for enhanced transportation solutions in the region.