Ban-Etsu Expressway (Aizu-Bange IC to Nishi-Aizu IC)
Progress of the 4-lane expansion project

Construction area

Current progress

Current progress
Explanation of progress status

  • 1. Tsukamatsu Tunnel

    Tsutsumatsu Tunnel

    Taken in October 2025

  • 2. Toriyama Tunnel (Eastern Entrance)

    Toriyama Tunnel (Eastern Entrance)

    Taken in October 2025

  • 3. Nishiaizu Tunnel

    Nishiaizu Tunnel

    Taken in October 2025