Giovanni XXIII Tunnel (also called Passante a Nord-Ovest) is a road tunnel in Rome, Italy, that is part of the Tangenziale Est road. It is about 2.9km (01.8miles) long.
The twin tunnels form a dual carriageway running under the Monte Mario hill, connecting the northwest zone to northeast zone of Rome.
The tunnel was officially opened on 22 December 2004.
The tunnel is toll-free.
