ADOT 'Goes Deep' With Columns to Support Roadway, Keep Bridges Steady

Every time you drive by an overpass, you see the cement-and-steel columns that support the roadway. There could be only a few on a small overpass, or more than a dozen in larger overpasses like the ones at two current projects on Interstate 10 in Pinal County. They usually hold the overpass 15 to 20 ft....

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