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A manhole cover on the 600 block of 25th Avenue Southwest that's several inches below street level. Tribune photo by Gary Miller

Manholes aren't sinking -- frost is lifting the streets around the city


WILLMAR -- People driving around Willmar's rougher-than-usual streets this spring are seeing a demonstration of the tremendous power of water and ice.

Many have probably noticed that many manhole covers in the city seem to be sinking.

That is what it looks like, but the manholes don't rise or fall with the weather, because they extend below the frost line, said Willmar Public Works Director Ron Gilbertson.

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Linda Vanderwerf

I cover education issues for the West Central Tribune and have worked for the paper since 1995. I have worked in journalism since 1981.

Follow me on Twitter: @lindavanderwerf

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