Joban Expressway (Yamamoto Minami Smart IC to Yamamoto IC)Progress of the 4-lane expansion project Construction area Clicking will display a Large image. Current progress Explanation of progress status Progress photos will be posted from the start of construction. To those using Joban Expressway HOME Tohoku Area 4-Lane Road Expansion Project Map Miyagi Prefecture Business Map Progress report on the 4-lane expansion project Joban Expressway (Yamamoto Minami Smart IC to Yamamoto IC)