Temporary On-Ramp Closure Scheduled on Interstate 90 at Hartford (Exit 387)

For Immediate Release:
Monday, Sept.  8, 2025

Contact:
Matthew Glines, Project Engineer, 605-220-6798

HARTFORD, S.D. – 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.

The prime contractor for this $12.6 million project is D & G Concrete Construction Inc. of Sioux Falls, S.D. The overall project completion date is June 2026.

Construction Project Page:
Find the latest information on the project website at https://dot.sd.gov/projects-studies/construction-projects/interstate-90-exit-387-hartford.

Sign Up for Text Notifications:
For updates on major traffic changes, subscribe to a free text-in service. To subscribe, simply text the keyword I90Exit387 to 605-566-4041. Subscribers can unsubscribe at any time.

About SDDOT:
The mission of the South Dakota Department of Transportation is to provide a safe and efficient public transportation system.

For the latest on road and weather conditions, road closures, construction work zones, commercial vehicle restrictions, and traffic incidents, please visit https://sd511.org or dial 511.

Read more about the innovative work of the SDDOT at https://dot.sd.gov.

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