I-15 | New Harmony to Kolob Canyon Drive | Rebuild
I-15 | New Harmony to Kolob Canyon Drive | Rebuild
UDOT will construct a 5-mile-long passing lane on Southbound I-15 from the New Harmony Interchange to Ash Creek Reservoir, milepost 38-43. Construction will take place Spring 2026 through Fall 2027.UDOT will construct a 5-mile-long passing lane on Southbound I-15 from the New Harmony Interchange to Ash Creek Reservoir, milepost 38-43. Construction will take place Spring 2026 through Fall 2027.
Overview
Project Overview
The Utah Department of Transportation (UDOT) plans to construct a 5-mile-long passing lane on southbound I-15 from the New Harmony Interchange to Ash Creek Reservoir, milepost 43 to 38.
This project will widen southbound I-15 from two to three lanes and rebuild the bridges at the New Harmony Interchange (Exit 42) and
Kolob Canyon Interchange (Exit 40). Construction is anticipated to begin early 2027.
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Project Map
Contact Information
To contact the public information team with questions or concerns:
Hotline: 435-254-3305
Email: i15newharmony@utah.gov
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