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UDOT awards $300 million design-build project for Santaquin I-15 interchange; construction expected in 2027
Summary
After years of local advocacy, UDOT has awarded a design-build contract to reconstruct the I-15/Santaquin interchange with roughly $300 million in funding. City officials said design work is underway, bids are expected in November and initial construction is slated for early spring 2027.
Santaquin’s mayor announced Feb. 17 that the Utah Department of Transportation has awarded a major, multi‑phase project to rebuild the I‑15/Santaquin interchange, a move city leaders said will ease frequent congestion on Main Street and other nearby roads.
The mayor said the state has approved about $300 million for the project and that UDOT’s delivery method is design‑build. He told the council that environmental work already completed provided roughly 20% of the design and that the state expects to release construction bids in November, with the first earth‑moving work targeted for early spring 2027.
“This takes 30 years down to four,” the mayor said, describing long‑running local advocacy to secure the project. He warned the council that construction would cause disruption for “about two construction seasons” but said the work would improve safety and traffic flow for decades.
City staff said UDOT is asking the project team to minimize business impacts during construction and that the city will coordinate with affected businesses. The mayor said the state and city will continue discussions about staging, traffic detours and noise mitigation.
Council members and staff thanked city personnel who led the outreach over several years and committed to continuing community updates as design and permitting move forward. Several council members urged staff to keep affected business owners informed about staging and schedule changes as early designs solidify.
The council closed the discussion by noting that design‑build procurement and complex right‑of‑way work will extend over multiple years and that more detailed phasing and timelines will be available as UDOT advances the design and procurement process.
