Money will be available to states and territories to help cover the costs of repairing roads and bridges damaged by natural disasters.
Two lanes are scheduled to reopen in each direction on Friday, Nov. 18.
U.S. 30 between I-29 and the Missouri River will be closed temporarily beginning at 9 a.m., Oct. 24.
Parts of interstates 680 and 29 remain closed almost three months after flooding.
$2 million in emergency money goes to the Iowa Department of Transportation to reimburse the state for work done on federal-aid highways.
Closures could last for months, state transportation departments say.
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