There IS semi truck parking available. When you turn north off business 40, you’ll cross the tracks to the stop sign. Look to your 1 oclock. There is a large, lighted, paved, parking area there on your right. There is a shuttle van to carry you to the casino entrance.
They have parking across the street you can park there
Not sure you may have to call the casino and ask them
There were some 1 ton duellies there at my last visit
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