Drivers in South Dakota will soon have another option to enter and exit Interstate 29.

The South Dakota Department of Transportation has announced that the 20th Street Interchange on I-29 is scheduled to open on Saturday (July 29), in Brookings.

Northbound and southbound I-29 on and off-ramps will be opened that day, as well as the 20th Street mainline through the city of Brookings.

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I-29/20th Street - Brookings

SDOT is advising motorists to be aware that permanent signage installations along I-29 will continue over the coming weeks and may require periodic Interstate single-lane closures. A reduced speed limit of 65 miles per hour will remain in effect until all permanent signs are installed.

According to SDOT, Brookings has been considering a new I-29 interchange at 20th Street for nearly 20 years. The project became a reality after a 2019 Department of Transportation grant was received.

The $15.3 million dollar project officially began in the winter of 2022.

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