What are the red and white gates that are seen on I-64 exits?

Question:
They are almost like barriers that will stop the flow of traffic on and off I-64. Why are they there and what are they for?

Answers:

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The asker did not specify where on I-64 he saw the red and white gates. I-64 goes from St. Louis, MO to Chesapeake, VA and passes through mountainous country (nowhere near what exists out in the Rocky Mountains). If the poster specifies where he saw the gates, perhaps he will get a better answer rather than mere speculation. I assumed he was referring to Norfolk, VA.

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Do you see these gates towards Norfolk or Virginia Beach?

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I-64 is an evacuation route from those coastal areas in the event of a hurricane or some Homeland Security event. I-64 can become one-way westbound - meaning that eastbound traffic will not be able to hop on I-64 because the gates will prevent people from doing so.

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When the event passes - I-64 becomes one-way eastbound and the gates will prevent those from traveling westbound on I-64.

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Another possibility is HOV exits where there is a shared HOV lane. I-66 in northern Virginia used to have gates which prevented traffic from exiting onto I-495 during the morning rush hour.

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Even though temperatures are in the 50s there now, it's still snow country and there are times it will drift to the point the road has to be temporarily shut down to be cleared. So that's exactly what they are, barriers that will stop the flow of traffic on I-64.

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Not sure where I-64 is, but I-70 has the same and they are used when the weather gets really bad during the winter. They close the highway to keep people from getting stranded.

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It's part of Homeland Security. They can shut down the ramps to the Interstate if need be. Less frightening aspect would be the snow but we don't get that much here.

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Like a little gate would stop a terrorist?!

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Red & white striped barriers, my guess is to close the highway in heavy snow.

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