^"一般国道の路線別、都道府県別道路現況" [Road statistics by General National Highway route and prefecture] (PDF) (in Japanese). Ministry of Land, Infrastructure, Transport and Tourism. Retrieved 12 February 2020.
^The Ishinomaki Kahoku (2014). Surviving the 2011 Tsunami. Ishinomaki, Miyagi Prefecture, Japan: Junposha. p. 53.
ISBN978-4-8451-1351-4.