Critics have skewered the unimaginative name of the University District Gateway Bridge. And let’s be honest, “Centennial Trail” does nothing to describe the 61 miles of paved trail that follows the Spokane River’s path from Nine Mile Falls northwest of Spokane to Coeur d’Alene. Then there’s Ben Burr, that mysterious name that’s attached to a trail, a boulevard and a road, not to mention a very quaint park. But who was Ben Burr?