Mayor Touts Waze App to Avoid Casey Mess By Chris Helms on March 16, 2015 Mayor Touts Waze App to Avoid Casey Mess Screen grab of Waze traffic app on Monday, March 16, 2015 It might come as little comfort to people who live near Jamaica Plain’s version of the Big Dig, but Mayor Marty Walsh suggests downloading a socially-driven traffic app to navigate around the Casey Arborway project.