Interstate 90 - Exit 387 (Hartford)

Project Summary

This project will include reconstructing the standard diamond interchange at exit 387, and replacing the structure over Interstate 90.

The newly constructed corridor of Western Avenue will improve pedestrian facilities and traffic flow through the area.
In conjunction with the SDDOT project, the City of Hartford is continuing the Western Avenue reconstruction from the Diamond Trail intersection to the north of Mickelson Road.

Project Timeline:

Spring 2025 - November 2025 with minor finish work into 2026

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Project Updates:

June 23, 2025:

May 15, 2025 – June 15, 2025, Completed Work: The contractor has finished building the south bridge berm and continues to work on the north bridge berm. Pile driving and footings have been completed for the bridge center bent.

Anticipated work June 15, 2025 – July 15, 2025: The contractor will finish building the north bridge berm and temporary ramps for phase two. Pile driving will be completed for both abutments, and the center bent will be completed. Traffic will be switched over to the temporary diversion on Western Avenue. Pavement removals will begin on the west side of the Western Avenue eastbound off-ramp and westbound on-ramp. Grading, pipe work, gravel surfacing, and PCC work will follow.

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April 8, 2025 - Press Release:

On Monday, April 14, 2025, construction work begins on Interstate 90 (exit 387) at Hartford. During the construction project, lane closures will be placed at various times on the eastbound and westbound lanes of I-90. Speed limits will be reduced to 65 mph through the work zone on I-90.

The project also includes work on Western Avenue from south of Jeffrey Street to Diamond Trail in Hartford. A two-way traffic configuration will be placed on Western Avenue.

This project will include reconstructing the standard diamond interchange at exit 387 and replacing the structure over I-90. Western Avenue will be reconstructed as a three-lane roadway with a center left-turn lane, curb and gutter, sidewalk, and a shared use path. Additionally, the City of Hartford will have a project starting that extends the reconstruction of Western Avenue from Diamond Trail to the north of Mickelson Road. Motorists are asked to stay alert for workers, equipment, and slowed traffic through the work zone.