The Utah Department of Transportation (UDOT), in coordination with the Federal Highway Administration and the I-15 Payson Main Street Interchange Environmental Impact Statement (EIS) project team, has identified six alternatives to study in greater detail during the next phase of the EIS.
In December 2015, UDOT approached the public, federal and state agencies, and Payson City to solicit comment on three categories of potential alternatives (Improve, Relocate, Combination), and 17 alternatives within those categories.
UDOT, FHWA, and the study team narrowed the list to a reasonable range of alternatives based on the results of the Level 1 and Level 2 screening process, as well as input received from the public, agencies, and Payson City. Four build alternatives, within the Combination and Improve categories of alternatives, were initially carried forward: C1 Braided Ramps, C3 Frontage Road Ramps, C4 Split Diamond, and I1 Long Span Structure.
Since that time, the project team has been addressing comments received from UDOT and FHWA, including adjusting alternative design and providing additional information regarding environmental, social, and economic impacts. Through this process, the study team determined the two Relocate (R) alternatives should be carried forward and fully evaluated in the DEIS alongside the other four build alternatives. The R alternatives - R1 Relocate Near and R2 Relocate Far - were originally eliminated after the alternatives meeting in December 2015. However, review and comment indicates further analysis is warranted.This is a normal part of the EIS process to work collaboratively and undergo multiple reviews to ensure that study requirements are met and alternatives are adequately considered.
Additional details regarding each of these alternatives can be found on the Alternatives Meeting tab.
The study team will now analyze, in detail, the environmental, social, and economic effects of these alternatives. The findings of this analysis will be presented in the Draft EIS, which is now expected to be available for public review in late summer 2017. The DEIS will provide a full analysis of the six build alternatives and will identify a preferred alternative. There will be a 45 day minimum public comment period after the DEIS is published. UDOT and FHWA will consider comments when finalizing the EIS and issuing a Record of Decision.
The alternatives shown below, including design details and potential impacts, are preliminary. The design of each alternative and any corresponding impacts are being further refined and analyzed throughout the summer of 2017.