Environmental Assessment

Published November 25,2024

We have prepared the Environmental Assessment (EA) for the I-15 Spanish Fork Interchange Study!

This assessment evaluates the environmental impacts and performance of the preferred alternative (a new interchange on I-15 at Center Street) compared to the no-action alternative (doing nothing ). We will accept public comments during the public comment period, open from Nov. 25, 2024, through Jan. 3, 2025.

We will hold a virtual meeting and in-person public hearing for the EA where members of the public can review study results, gather information about the study, ask questions, and provide comments (public hearing only).

Comments can be provided at the in-person hearing, on the study website, through voicemail at 385-999-7771, or mail at 2825 E Cottonwood Pkwy #200, Salt Lake City, UT 84121.

Preferred Alternative: Center Street Interchange

The Utah Department of Transportation (UDOT) is initiating an Environmental Assessment (EA) to evaluate a potential new interchange on Interstate 15 (I-15) in southwest Spanish Fork in Utah County. 

The study area for the EA includes I-15 between the Main Street Interchange to the north (Exit 257 A-B) and the Benjamin interchange to the south (Exit 253); the area west of I-15, and east of I-15 along Center Street and surrounding roads. 

Study Area

These limits are general and are not intended to constrain the EA and possible solutions. East/west limits depend on potential interchange locations identified in the scoping phase.

UTA South Valley Transit Study

While UDOT prepares an EA, the Utah Transit Authority (UTA) will conduct the South Utah Valley Transit Study to evaluate options for expanding FrontRunner transit service in the southern portion of Utah County, which includes Spanish Fork.

The UDOT study and the UTA study are being conducted independently of each other, but both agencies will be collaborating throughout the study process to inform each agency's respective decision-making process.

Find out more about the UTA study here.