2024 Diverging Diamond Interchanges (DDI) Construction Project

The Idaho Transportation Department (ITD) is making plans to reconstruct two US-20 interchanges in Rexburg in the summer of 2024. The interchanges are located at:

University Boulevard (Exit 332)
SH-33 (Exit 333)

Work began in mid-May of 2024 with the South Interchange (332). A full closure went into effect in June for approximately 30 days. The Intersection opened as single-lane access shortly after the full closure. Construction on the interchange continued throughout the season. In mid-July, work began on the Central Interchange (333) with a 30-day full closure taking place in August. There were significant challenges faced during the closure (including a sewer line break that caused a 24-hour water-use cessation across the city where residents we asked to avoid utilizing drains throughout the city). These challenges pushed the full closure into September, opening a single lane of the intersection around the middle of that month. Construction on both interchanges was wrapped up by November.

As the summer of 2025 approaches, cosmetic updates are expected to take place as well as final details, i.e. chip/slurry seal, line painting, and signage. There may be brief traffic interruptions to the interchanges during these times, but projects are not expected to be nearly as significant as last year's complete redesign.

City of Rexburg

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