This list of tunnels in Croatia includes any road, rail or waterway tunnel in Croatia.
The M6 motorway is a north-south motorway in Hungary running along the Danube connecting Budapest to the seat of Baranya county Pécs, and further south to the Croatian border.
The Sveti Rok Tunnel is a road tunnel in Lika, Croatia. It is 5.68 kilometres (3.53 mi) long and passes through the Velebit mountains. The tunnel runs between the Sveti Rok and Rovanjska exits on the A1 highway (Zagreb–Dubrovnik); eponymous villages are located near the tunnel's northbound and southbound entrances respectively.
The Plasina Tunnel is located between Žuta Lokva and Ličko Lešće. It is located between Otočac and Perušić interchanges of the Croatian A1 motorway.
Tuhobić Tunnel is one of the most significant structures on the Croatian A6 motorway route. As it is 2,143 metres (7,031 ft) long, Tuhobić Tunnel is the longest tunnel on the A6 motorway route. The tunnel is located at 700 metres (2,300 ft) above sea level, connecting the Gorski Kotar and Croatian Littoral regions. The tunnel is located between the Vrata and Oštrovica interchanges.
The Brinje Tunnel is a four-lane tunnel in Croatia, an integral part of the A1 motorway located between Brinje and Žuta Lokva interchanges. The Brinje Tunnel is located immediately to the south of the Mala Kapela Tunnel, the longest tunnel in Croatia.
Mala Kapela Tunnel is the most significant structure on the Croatian A1 motorway route. As it is 5,821 metres (19,098 ft) long, Mala Kapela Tunnel is the longest tunnel in Croatia. The tunnel is geographically located between the villages of Jezerane and Modruš, and between Ogulin and Brinje motorway interchanges. The tunnel passes through the Mala Kapela mountain in the northeast-southwest direction. The first tunnel tube through the Mala Kapela mountain was completed in 2005, and was used for both directions of traffic until the second tube was completed in 2009.
The Adriatic Highway is a road that stretches along the eastern coast of the Adriatic Sea and is part of the European route E65. The road passes through Croatia, with smaller stretches through Bosnia and Herzegovina and Montenegro and ends at the Montenegro-Albania border. It is an undivided two-lane road for almost its entire length, with the exception of a short stretch through Zadar and a 24 kilometres (15 mi) dual-carriageway section from Plano (Trogir) to the southeast suburbs of Split. It was planned in the 1930s and built in the 50s and 60s. The dual carriageway is planned to be extended further southeast to Omiš. Completion of the Adriatic Ionian motorway is proposed in order to replace the Adriatic highway as a high-performance road transport route along the Adriatic coast.
The A1 motorway is the longest motorway in Croatia, spanning 476.3 kilometers (296.0 mi). As it connects the nation's capital Zagreb to the second largest city Split, the motorway represents a major north–south transportation corridor in Croatia and a significant part of the Adriatic–Ionian motorway. Apart from Zagreb and Split, the A1 motorway runs near a number of major Croatian cities, provides access to several national parks or nature parks, world heritage sites, and numerous resorts, especially along the Adriatic Coast. National significance of the motorway is reflected through its positive economic impact on the cities and towns it connects as well as its importance to tourism in Croatia.
The A2 motorway is a motorway in the Hrvatsko Zagorje region of northern Croatia, connecting Zagreb to the Macelj border crossing and Slovenia. The A2 motorway is part of the European route E59 and the Pan-European Corridor Xa. The motorway spans 59.2 kilometres (36.8 mi) between the Slovenian border and the Jankomir interchange within the Zagreb bypass, providing road connections to a number of cities and towns besides Zagreb, including Krapina, Zabok and Zaprešić. All sections of the motorway, except the northernmost one between the Macelj border crossing and Trakošćan, and the southernmost one near Zagreb, are tolled, using a closed toll collection system.
The A6 motorway is a motorway in Croatia spanning 80.2 kilometres (49.8 mi). It connects the nation's capital, Zagreb, via the A1, to the seaport of Rijeka. The motorway forms a major north–south transportation corridor in Croatia and is a part of European route E65 Nagykanizsa–Zagreb–Rijeka–Zadar–Split–Dubrovnik–Podgorica. The A6 motorway route also follows Pan-European corridor Vb.
The A7 motorway is a 42.4-kilometre-long (26.3 mi) motorway in Croatia. It connects the nation's largest port in Rijeka, to the Croatian motorway network, as well as to the Rupa and Pasjak border crossings to Slovenia. The motorway forms part of a longitudinal transportation corridor in Croatia, and it is a part of European route E61 Villach–Ljubljana–Trieste–Rijeka. The A7 motorway route south of Orehovica interchange, where it also intersects Pan-European corridor Vb, is a part of European route E65.
The D8 state road is the Croatian section of the Adriatic Highway, running from the Slovenian border at Pasjak via Rijeka, Senj, Zadar, Šibenik, Split, Opuzen and Dubrovnik to the border with Montenegro at Karasovići. Most of the D8 state road remains single carriageway, though with some dual carriageway stretches. The total length of the road through Croatia is 643.1 kilometres (399.6 mi).
The Učka Tunnel is a toll tunnel on the A8 motorway in Croatia. Being part of the Istrian Y network in Istria, it is 9.1 meters (30 ft) wide and 5,062 m (16,608 ft) long, the third longest in Croatia after the Mala Kapela and Sveti Rok tunnels. The tunnel consists of a single tube, with two traffic lanes. Construction on the existing tunnel tube began in 1978 and it was opened for traffic on September 27, 1981. It is currently used for traffic in both directions. An additional tunnel tube is under construction.
D50 state road, located mainly in Lika region of Croatia connecting cities and towns of Otočac, Gospić, Perušić and Gračac, to the state road network of Croatia, and most notably to A1 motorway at a number of interchanges - Otočac and Sveti Rok interchanges (directly) and Gospić and Gornja Ploča interchanges. The road is 104.2 km (64.7 mi) long. The route comprises a significant number of urban intersections, in segment of the road running through Gospić.
D62 is a state road running parallel to a section of A1 motorway route between Šestanovac, Vrgorac and Mali Prolog, and parallel to the A10 motorway after Mali Prolog. The road provides access to the Mali Prolog border crossing to Bosnia and Herzegovina via the D222 state road.
D532 is a state road in Dalmatia region of Croatia, connecting the A1 motorway in Zagvozd interchange, to Baška Voda at the Adriatic coast and D8 state road and D62 state road immediately to the north of the motorway. The road is 10.5 km (6.5 mi) long.
D27 is a state road connecting Gračac in the southern part of Lika, Croatia to D8 state road via Benkovac. The road is 96.9 kilometres (60.2 mi) long. The road also provides an alternate route to the sections of A1 motorway and the D8 state road that cross the Maslenica strait over the two Maslenica bridges, underneath the Velebit. This is especially important when strong wind or storms cause the A1 motorway section between Maslenica Bridge (A1) and Sveti Rok Tunnel to be closed for traffic for safety reasons.
The Konjsko Tunnel is located between Vučevica and Dugopolje interchanges of the A1 motorway, in the central Dalmatia region of Croatia.
D35 is a state road in the northwestern Croatia connecting Sveti Križ Začretje and the A2 motorway Sveti Križ Začretje interchange to Varaždin and the A4 motorway Varaždin interchange. The road is 46.0 km (28.6 mi) long.
Vrata Tunnel 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. The tunnel is noteworthy since it comprises a 58-metre (190 ft) bridge spanning a cavern found during excavation.