I-15 | Hamilton Fort | Rebuild
I-15 | Hamilton Fort | Rebuild
UDOT is adding a northbound climbing lane on I-15 between the Kanarraville Rest Stop and the South Cedar Interchange. This project is also improving the Hamilton Fort Interchange at Exit 51.
Project Overview
The Utah Department of Transportation (UDOT) plans to construct a 13-mile-long northbound climbing lane on I-15 from the Kanarraville rest stop to the South Cedar Interchange, milepost 43 to 56. The project will widen I-15 through this area from two to three northbound lanes. The project will also reconstruct the northbound side of the Hamilton Fort interchange (Exit 51) with a roundabout constructed on the east side of I-15.
Construction is expected to require multiple construction seasons, beginning in Spring 2025 and ending in early 2027. Construction schedules are subject to change due to weather conditions and material availability.
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Progress at Exit 51
At the Hamilton Fort Interchange (Exit 51), crews are nearing completion of the new bridge and have started excavation work for the new roundabout.
They have built a temporary bypass ramp to allow traffic to access northbound I-15. The image below shows an aerial view of the newly paved bypass. The image was taken on August 27, 2026.
Schedule
Work Hours: 6 a.m. - 5 p.m.
Work Days: Monday through Friday
There may be intermittent one-lane closures on I-15 during nighttime work hours of 7 p.m.- 7 a.m.
Contact Information
To contact the public information team with questions or concerns:
Hotline: 435-254-3305
Email: i15hamiltonfort@utah.gov
Stay Informed
To receive project updates, please contact the public information team at the email address above and enter "Project Updates" in the subject line.