(The Center Square) – Seattle voters have approved the largest tax proposal in city history, with revenue going toward transportation needs. Tuesday night results show the levy receiving 67% of collected votes. The eight-year levy package totals $1.55 billion. It is expected to cost a median homeowner in Seattle approximately $546 a year. The biggest portion of generated funding – $330 million – would go toward arterial roadway maintenance. Approximately 15 major corridors are planned to be repaved. Another $115 million would go toward transit improvements on streets with high ridership bus ro…