Construction progress October 2020 Construction progress Thursday, October 1, 2026 Regarding the breakthrough ceremony for the Yamauchi Tunnel on the E46 Akita Expressway December 2020 Construction progress Friday, December 5, 2025 Construction progress has been updated (as of October 2025). April 2025 Construction progress Friday, April 25, 2025 Construction progress has been updated (as of March 2025). Construction progress Monday, April 21, 2025 The Onahama Road will open on Thursday, August 7th, 2025 at 3:00 PM. HOME Construction progress
