When you’re digging up streets that haven’t been dug up for decades, surprises are sure to emerge. The Northern Wisconsin city of Rhinelander is finding that out as it moves through a large sewer, water and streetscape project.“We come across surprises every day in this construction,” says Tim Kingman, director of public works. “We’ve encountered some interesting foundation walls that are frightening, but we have to deal with them. We’ve encountered piping and abandoned materials that we didn’t know were there, some active materials we didn’t even know were there. It’s been revealing.”The city, located about 2 1/2 hours northwest
