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:

Sept. 17, 2025:

Aug. 15 – Sept. 15, 2025, Completed Work:
The bridge contractor completed the bridge abutments and bridge deck concrete pour. Contractors also began dirt work, storm sewer installation, concrete paving, curb and gutter placement, and lighting along Western Avenue.

Anticipated Work Sept. 15 – Oct. 15, 2025:
Contractors will finish work on the west side of Western Avenue and shift traffic to a two-lane configuration on the newly constructed lanes. Work will then begin on the east side of the bridge and Western Avenue, as well as Ramp A and Ramp B.

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Sept. 8, 2025:

Beginning at 6 a.m. on Thursday, Sept. 11, 2025, the westbound Interstate 90 on-ramp at Hartford (exit 387) will be temporarily closed. The temporary on-ramp closure is required to allow crews to safely complete a bridge deck pour over I-90.

Concrete trucks will need direct access in and out of the work zone during this bridge deck pour operation. The on-ramp will be reopened as soon as the deck pour is complete. The on-ramp is anticipated to reopen by 12 p.m. (noon) on Thursday, Sept. 11, 2025.

During the temporary on-ramp closure, traffic will be routed to the I-90 eastbound on-ramp exit at 387 and travel three miles east. Motorists can then use the westbound on-ramp at exit 390 to travel westbound on I-90. Drivers are encouraged to allow for extra travel time and use alternate routes if possible.

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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.