Why Does Salt Fail on Icy Roads in Illinois?

When the cold weather hits Illinois, it's not uncommon to see roads covered in salt, but sometimes, this salt doesn't do much to prevent icy conditions. Why does this happen? It's all about the science behind salt and ice. The key to understanding this is knowing that salt works by lowering the freezing point of water. However, when temperatures drop below 25 degrees Fahrenheit, salt becomes less effective. It can't penetrate the ice to start the melting process. This means that even if roads are covered in salt, they can still be icy and dangerous. This winter, temperatures in Northern Illinois are expected to dip below zero. This means that salting roads, sidewalks, driveways, and parking lots might not be as effective as we'd like. It's important to be cautious when walking or driving in these conditions. You might even want to practice your penguin waddle to avoid slipping on hidden patches of ice. The reason for this is that salt needs to mix with water to lower its freezing point. When it's too cold, the water freezes before the salt can do its job. This is why you might see salt on the roads but still encounter icy patches. It's a reminder that Mother Nature can be unpredictable, and sometimes, our best efforts aren't enough to keep the roads safe. So, what can you do to stay safe? Be cautious when walking or driving. Keep an eye out for icy patches, and remember that salt might not be as effective as you think. It's also a good idea to stay informed about the weather and road conditions. This way, you can be prepared for whatever Mother Nature throws your way.