Commissioner Dee discusses $250M US 89 I 84 interchange replacement project timeline

April 27, 2025 | Transportation Coordinating Committee, Wasatch Front Regional Council, Wasatch County Commission and Boards, Wasatch County, Utah


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Commissioner Dee discusses $250M US 89 I 84 interchange replacement project timeline
A significant transportation project is set to transform the US 89 and I-84 interchange in Wasatch County, with plans for construction to begin by 2027. The Transportation Coordinating Committee announced that the project, which has a budget of $250 million, is currently in the design phase following the completion of its environmental review in October 2024. This progressive design-build approach will foster collaboration between contractors and designers, aiming for greater efficiency and cost-effectiveness during construction.

The project will not only replace the existing interchange but also improve mobility along US 89, particularly benefiting residents in Morgan County who frequently travel to and from the area. The new design will include enhancements to the railroad bridges that cross US 89, further facilitating traffic flow.

In addition to the US 89 project, the committee discussed the Mountain Green Interchange, which is programmed for $5 million and is also in the environmental phase. This project aims to replace the current half-interchange with a full-access interchange, providing better access to the Snow Basin area. Environmental clearance is expected by early next year, with construction anticipated to take place over two seasons.

Another key topic was the continuation of the West Davis Corridor, which is currently in design with a budget of $20 million. This project will extend the corridor from 1800 North to SR 193, enhancing connectivity for Weber and Davis Counties. Construction could begin as early as 2026, pending the acquisition of necessary right-of-way.

The committee also addressed ongoing concerns about congestion at various interchanges, including the 650 North and 2700 North areas, which are under consideration for future reconstruction projects. As development continues in the region, including the new America First Credit Union complex, the committee is actively studying the impact on local infrastructure and planning for necessary upgrades.

These projects reflect a commitment to improving transportation infrastructure in Wasatch County, addressing current needs while preparing for future growth. The committee remains focused on ensuring that these developments enhance mobility and accessibility for all residents.

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