The park is open, but some portions are closed off to vehicles for trails and winter weather. Please find more info here: https://www.iowadnr.gov/Places-to-Go/State-Parks/Alerts-and-Closures
The park is open to walk into year round during those hours. They do close it to vehicles during the winter. They will open to vehicles again once the road has been cleared of trees, snow and ice, usually in April but is really weather dependant.
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