Seems like there are more underground utility conflicts than a decade ago, and they are getting harder to deal with.  One signal mast arm pole foundation within a new traffic signal was not cooperating with standard installation techniques.  We had to work around two adjacent utility trenches that had been backfilled with sand.  There was one trench on each side of the new foundation (with adequate clearance) and the sand was caving into the drilled foundation hole and exposing the utility pi...
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