The Drežnik Viaduct is located in Karlovac , Croatia , immediately to the west of the Karlovac interchange on the A1 motorway . It is the longest viaduct in Croatia, spanning 2,485 metres (8,153 ft). It is executed in seven segments (225 m (738 ft)+270 m (890 ft)+4x408 m (1,339 ft)+358 m (1,175 ft) long), separated by expansion joints. The viaduct was constructed by Konstruktor , Split , as the main contractor, and Viadukt and Hidroelektra of Zagreb as subcontractors in 2000 and 2001.
11-424: The viaduct is executed as two parallel structures, each 10.5 m (34 ft) wide. Their superstructures are continuous structures with spans of 35 metres (115 ft) to 70 metres (230 ft) m above Kupa River . The carriageway of each of the bridges consists of two traffic lanes 3.75 metres (12.3 ft) wide and two marginal strips 1 metre (3.3 ft) wide. There are no sidewalks and no emergency lanes on
22-601: Is 297 kilometres (185 miles) long, with a length of 118 km (73 mi) serving as the border between Croatia and Slovenia and the rest located in Croatia. The name Colapis , recorded in antiquity , is presumed to have come from the Proto-Indo-European roots *quel- 'turn, meander' and *ap- 'water', meaning 'meandering water'. An alternative interpretation is *(s)kel- / *skul- 'shiny, bright', meaning 'clear river'. The Kupa originates in Croatia in
33-418: Is a river in central Croatia . It is 83 km (52 mi) long and its basin covers an area of 604 km (233 sq mi). Its source is in the Žumberak mountain, southwest of Zagreb . It flows eastwards, passes south of Velika Gorica , then turns south-east, more or less parallel to the river Sava . It flows into the river Kupa near Odra Sisačka , just northeast of Sisak , also just before
44-614: The Adriatic resorts. The traffic count is performed using analysis of motorway toll ticket sales. Kupa River The Kupa ( Croatian pronunciation: [kûpa] ) or Kolpa ( Slovene pronunciation: [ˈkóːlpa] or [ˈkóːwpa] ; from Latin : Colapis in Roman times; Hungarian : Kulpa ) river, a right tributary of the Sava , forms a natural border between north-west Croatia and southeast Slovenia . It
55-534: The D1 state road running through Karlovac, which was especially severe during summer seasons. Traffic is regularly counted and reported by Hrvatske autoceste , operator of the viaduct and the A1 motorway where the structure is located, and published by Hrvatske ceste . Substantial variations between annual ( AADT ) and summer (ASDT) traffic volumes are attributed to the fact that the bridge carries substantial tourist traffic to
66-505: The Kupa joins the river Sava. The upper flow of Odra has been significantly altered by humans, by the digging of the 32 km (20 mi) long canal Sava-Odra (-Sava) south of Zagreb, as a measure against flooding (designed taking into account the maximum flows of 1964 , 1973 and 1974, and first put to use in 1979). There is no certain etymology for the river's name, it could be Slavic or pre-Slavic, and 20th-century linguists did not have
77-484: The bridge itself. The superstructure is executed in I-section prefabricated reinforced concrete girders, made monolithic with in situ executed transverse beams and the deck slab. The longitudinal girders are mostly of a uniform length (traversing 35 m (115 ft) spans), except for those spanning the river and the longest, 70 m (230 ft) long span. Foundations of the viaduct are executed on piles. Cost of
88-579: The construction works related to the Drežnik Viaduct was 250 million Croatian kuna . The Drežnik Viaduct is the largest and the most significant structure on the Karlovac - Bosiljevo 1 section of the A1 motorway, which carries the transit traffic between Zagreb in the north and Rijeka and Split in the south, and channels it away from the Karlovac city centre, dramatically reducing travel times between those cities and relieving traffic congestion from
99-575: The left in Primostek , passes Vrbovsko , and eventually detaches from the Slovenian border having passed Metlika . It then reaches the city of Karlovac , where it receives influx from two other rivers from the right, Dobra and Korana (which in turn is joined by Mrežnica ). The Kupa continues flowing to the east, where it merges with Glina from the right, it then passes through two small towns called Šišinec and Brkiševina, and then proceeds to
110-463: The mountainous region of Gorski Kotar , northeast of Rijeka , in the area of Risnjak National Park . It flows a few kilometers eastwards, receives the small Čabranka River from the left, before reaching the Slovenian border. It then continues eastwards between the White Carniola region in the north and Central Croatia in the south. The Kupa receives influx from the river Lahinja from
121-691: The town of Sisak where it merges with Odra from the left and, after passing through Sisak town centre, flows into the Sava River. Fairly unpolluted downstream to Karlovac, the upper Kupa is a popular place for bathing in summer. The section from Stari Trg down to Fučkovci since 2006 is part of the Slovenian Krajinski park Kolpa nature reserve. The hydrological parameters of the Kupa are regularly monitored at Radenci , Kamanje , Karlovac , Jamnička Kiselica and Farkašić . Odra (Kupa) Odra ( pronounced [odra] )
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