Remarkable land transportation innovations include the San'yō Main Railroad Line in Honshū and the Yosan Main Railroad Line in Shikoku (both completed before World War II) and three series of bridges connecting Honshū and Shikoku (completed in the late 20th century).
As grandes innovacións no transporte terrestre inclúen a Liña de Ferrocarril Principal de San'yō en Honshū e a Liña de Ferrocarril Principal de Yosan en Shikoku (ambas completas antes da Segunda Guerra Mundial e tres series de pontes que conectan Honshū e Shikoku (terminadas a finais do século XX).