Kent County Road Commission FAQ

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Why can’t salt be put on roads and bridges before it snows?

Putting salt on road surfaces prior to a snowfall is ineffective because the salt often bounces off, or is blown from, the dry road before it can do its job. Salt is most effective after snow has accumulated and the temperature is 20° Fahrenheit or higher. Under these conditions, the salt mixes with the snow and melts the snow into slush that can be plowed off the pavement.  


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