Tuhia he tomokanga mo tenei whitianga - I whakawhānuihia te Hawaii Consolidated Railway ki te hono i nga maara huka Hāmākua ki te tauranga i Hilo Bay. I te Paenga-whāwhā 1, 1946, he tsunami i pā mai i te ru o nga Moutere o Aleutian
i pakaru te rori tereina kia nui i whakarerea ona ara. He maha nga tau i muri mai ka whiwhi te kawanatanga o Hawaii i te tika-a-ara, a, i te tau 1960 ka whakahoutia te Hawaii Belt Road (Route 19, e mohiotia ana ko te Māmalahoa Highway) hei whakaiti i te wa taraiwa.