The Utah Department of Transportation (UDOT), in cooperation with the City of Payson, has prepared an Environmental Impact Statement (EIS) that evaluated the interchange at Main Street (SR-115) and I-15. This study analyzed transportation conditions and is recommending potential solutions to meet current and future needs.

Final EIS

The project team has published the Final EIS, which is available for review on the Final EIS page of this site (click here). The FEIS identified Alternative C1: Braided Ramps as the Preferred Alternative. Alternative C1 would provide a connection between the existing Payson Main Street interchange and a new interchange approximately 0.7 miles to the northeast which would connect to a new arterial road (Nebo Beltway). Braided ramps (i.e., ramps that cross over each other) would provide a free-flow connection between the two interchanges. Main Street would be widened to five lanes at the interchange and taper to its current configuration south of 600 North. Main Street would also be realigned to connect to 900 North.

Next Steps

After the 30-day comment period, UDOT will consider and respond to all written comments received from members of the public and regulatory agencies. UDOT will then prepare a Record of Decision, which is final step in the EIS process. A Record of Decision is expected in mid-2019.
Contact the study team with any questions or concerns via email at or phone at (801) 859-3770.
The environmental review, consultation, and other actions required by applicable Federal environmental laws for this project are being, or have been, carried-out by UDOT pursuant to 23 U.S.C. 327 and a Memorandum of Understanding dated January 17, 2017, and executed by FHWA and UDOT.


Below is UDOT's estimated timeline for the EIS process.


Late 2014


Early 2015

Identify and gather public input regarding items to consider in the environmental study.


Mid 2015 to Summer 2017

Screen alternatives based on their potential impacts and how they meet the purpose and need statement; gather public input on the alternatives and the analysis metrics.

Draft EIS Published

Fall 2017

Report findings and present Locally Preferred Alternative.


Fall 2017

Members of the public invited to provide comments on the DEIS, review the document, and have questions answered by the project team.


Fall 2017

This period extends a minimum of 45 days after the release of the DEIS, providing members of the public the opportunity to submit comments in response to the DEIS via mail, email, or other means.


November 2018

The final EIS includes responses to all comments received for the DEIS, including feedback from agencies, key stakeholders, and the public. There will be public comment period following the publication of the final EIS.


Mid 2019

The Record of Decision is UDOTs final decision regarding the project. It also identifies mitigation requirements and other commitments.

The schedule has been revised throughout the course of this study. This timeline reflects the most current plan.
Current Phase
* Public Meeting and Review Period