Arrive in time to take in the sights and sounds of the Jacksonville Jazz Festival May 25-28 when you download the free FL511 app to your mobile device. The festival returns to the heart of downtown Jacksonville Memorial Day weekend and includes food vendors, musicians, artists and more! For road closures and parking information visit Hotel & Travel Information • Jacksonville Jazz Festival. For up-to-the-minute traffic information or to download the FL511 app visit FL511| Florida Traffic | Commuter Information.