The agency says northbound lanes of I-35 will be closed overnight on Jan. 26 for work on the snow gate at U.S. Highway 30.
The closure will begin at 1 a.m. and the agency says the closure should be brief.
The Iowa DOT also says northbound lanes of I-29 will be closed from 9 a.m. to 10 a.m. on Jan. 28 for work on the snow gate at U.S. Highway 30 near Missouri Valley.
Snow gates can be lowered to restrict travel during severe winter weather.
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