South Dakota Gov. Dennis Daugaard says crews will turn an Interstate 29 exchange bridge into a makeshift levee in an effort to protect much of the town of North Sioux City from flooding from the Big Sioux River.
But the governor says water from the crest expected sometime between Thursday and Saturday will likely spill into the neighborhood of McCook Lake, an area of North Sioux City of about 300 to 400 homes. It's not yet known how high the levels will rise, but some homes are expected to be damaged.
Daugaard says crews will close Exit 4 and begin constructing a levee by sandbagging the highway's four lanes and plugging the underpass. Northbound and southbound traffic will be diverted.
A meeting for residents is planned for Wednesday evening.
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