It was a common story in the 1980s: downtowns were dying. Stuart was right there with the ill-fated. Businesses had largely abandoned Stuart's historic buildings, leaving the streets deserted. The St. Lucie River, which should have been an asset, was more of a liability, befouled with pollution, some of it from the city's sewer system. The southernmost leg of Interstate 95 hadn't been completed yet, meaning US 1, the town's...