Bargagli-Ferriere Tunnel

It was opened on 15 June 1971 as part of a 4,220-metre (13,850 ft) toll road originally numbered T3.

[1] It was the first tunnel to be built with a jet-fan longitudinal ventilation system.

[2] On 22 July 1989 this road, built to complement the SS 225, was renumbered and part of the SS 225 was renumbered SP 77.

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