Forecasters said areas of light freezing drizzle are continuing to expand across the state making some roads slick.
A couple crashes were reported on the Mile Long Bridge in Polk County due to slick conditions.
A winter weather advisory is now in effect until midnight:
Icy conditions lead to several crashes on the Mile Long Bridge in Polk County on Thursday, one caught on video by KCCI photojournalist Cortney Kintzer.
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