The northern portal of the tunnel is located at elevation of 562 m.a.s.l., while the southern one is found at 575 m.a.s.l.

The tunnel comprises 7.7 metres (25 ft) wide carriageways, permitting driving speeds of up to 100 km/h.

Numerous caves, caverns and other speleological structures were found during the construction, but all of those were addressed successfully.

A backup electrical power supply is also provided to ensure continuous operation of the tunnel.

[9] Substantial variations between annual (AADT) and summer (ASDT) traffic volumes are attributed to the fact that the motorway carries substantial tourist traffic to the Dalmatian Adriatic resorts.