It's probably pretty much guaranteed that it'll never get ripped up. But it theoretically could be.
My dad has a utility right of way going across his yard, and he's lived there 30 years, and its not once been touched.
But, get copies of the documents, like others have posted, and find out exactly what they are for. The registration numbers of the utility right of ways should be on your land title. I believe you can get copies of the utility right of ways at any registry. I've gotten them before, and I'm pretty sure it was at the registry.
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