Tunnels in Circuit road of Immitos, Athens, Greece

Tunnels in Circuit road of Immitos (Periferiaki leoforos Immitou), Athens, Greece

These photos are from two tunnels constructed with
two different techniques in the Circuit road of
Immitos, in Athens, Greece.

The photos below are from a tunnel constructed with
the cut-and-cover method. Briefly, in this method, the
ground material above the tunnel is excavated, the
tunnel is constructed and then it is covered with some
of the excavated material.

These photos are from a different tunnel in the
circuit road of Immitos, that is constructed with
the NATM method. In the photo on the left you can
see the reinforcement of the entrance of the
tunnel. Temporary reinforcement is provided by
shotcrete.