Vrata Tunnel (Croatian: Tunel Vrata) is one of the shortest tunnels on the Croatian A6 motorway route. It is only 257 metres (843 ft) long and consists of two tunnel tubes. It is located between Oštrovica and Vrata interchanges. The tunnel is tolled within the A6 motorway closed toll collection system. There are no other toll plazas related to use of the tunnel. The tunnel was excavated by Viadukt using New Austrian Tunneling method. The tunnel was originally designed to be 325 metres (1,066 ft) long, but it was shortened due to the landslide on the western portal in the zone of contact between Paleozoic and carbonate layers.