The Drežnik Viaduct is located in
Karlovac
Karlovac () is a city in central Croatia. In the 2021 census, its population was 49,377.
Karlovac is the administrative centre of Karlovac County. The city is located southwest of Zagreb and northeast of Rijeka, and is connected to them via the ...
,
Croatia
Croatia, officially the Republic of Croatia, is a country in Central Europe, Central and Southeast Europe, on the coast of the Adriatic Sea. It borders Slovenia to the northwest, Hungary to the northeast, Serbia to the east, Bosnia and Herze ...
, immediately to the west of the Karlovac interchange on the
A1 motorway. It is the longest viaduct in Croatia, spanning . It is executed in seven segments (++4x+ long), separated by expansion joints.
The viaduct was constructed by
Konstruktor
Konstruktor inženjering d.d. is a Croatian construction company which was founded in 1945 as "Konstruktor-Split" in Split, Yugoslavia (today's Croatia).
Konstruktor was the first construction company in Dalmatia. Since 2006 Konstruktor inženje ...
,
Split
Split(s) or The Split may refer to:
Places
* Split, Croatia, the largest coastal city in Croatia
* Split Island, Canada, an island in the Hudson Bay
* Split Island, Falkland Islands
* Split Island, Fiji, better known as Hạfliua
Arts, enter ...
, as the main contractor, and
Viadukt and
Hidroelektra of
Zagreb
Zagreb ( ) is the capital (political), capital and List of cities and towns in Croatia#List of cities and towns, largest city of Croatia. It is in the Northern Croatia, north of the country, along the Sava river, at the southern slopes of the ...
as subcontractors in 2000 and 2001.
The viaduct is executed as two parallel structures, each wide. Their superstructures are continuous structures with spans of to m above
Kupa River
The Kupa () or Kolpa ( or ; from in Roman times; ) river, a right tributary of the Sava, forms a natural border between north-west Croatia and southeast Slovenia. It is long, with a length of serving as the border between Croatia and Slovenia ...
. The carriageway of each of the bridges consists of two traffic lanes wide and two marginal strips wide. There are no sidewalks and no emergency lanes on 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 spans), except for those spanning the river and the longest, long span.
Foundations of the viaduct are executed on piles.
Cost of 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
Zagreb ( ) is the capital (political), capital and List of cities and towns in Croatia#List of cities and towns, largest city of Croatia. It is in the Northern Croatia, north of the country, along the Sava river, at the southern slopes of the ...
in the north and
Rijeka
Rijeka (;
Fiume ( fjuːme in Italian and in Fiuman dialect, Fiuman Venetian) is the principal seaport and the List of cities and towns in Croatia, third-largest city in Croatia. It is located in Primorje-Gorski Kotar County on Kvarner Ba ...
and
Split
Split(s) or The Split may refer to:
Places
* Split, Croatia, the largest coastal city in Croatia
* Split Island, Canada, an island in the Hudson Bay
* Split Island, Falkland Islands
* Split Island, Fiji, better known as Hạfliua
Arts, enter ...
in the south, and channels it away from the Karlovac city centre, dramatically reducing travel times between those cities and relieving traffic congestion from the
D1 state road running through Karlovac, which was especially severe during summer seasons.
Traffic volume
Traffic is regularly counted and reported by
Hrvatske autoceste
Hrvatske autoceste (HAC) or Croatian Motorways Ltd is a Croatian state-owned limited liability company tasked with management, construction and maintenance of motorways in Croatia pursuant to provisions of the Croatian Public Roads Act () enacted ...
, operator of the viaduct and the A1 motorway where the structure is located, and published by
Hrvatske ceste
Hrvatske ceste (lit. ''Croatian roads'') is a Croatian state-owned company pursuant to provisions of the Croatian Public Roads Act ( enacted by the Parliament of the Republic of Croatia.
The tasks of the company are defined by the Public Roads A ...
.
Substantial variations between annual (
AADT
Annual average daily traffic (AADT) is a measure used primarily in transportation planning, transportation engineering and retail location selection. Traditionally, it is the total volume of vehicle traffic of a highway or road for a year divided ...
) and summer (ASDT) traffic volumes are attributed to the fact that the bridge carries substantial tourist traffic to the
Adriatic
The Adriatic Sea () is a body of water separating the Italian Peninsula from the Balkans, Balkan Peninsula. The Adriatic is the northernmost arm of the Mediterranean Sea, extending from the Strait of Otranto (where it connects to the Ionian Se ...
resorts. The traffic count is performed using analysis of motorway toll ticket sales.
See also
*
List of arch bridges by length
This list of the longest arch bridge spans ranks the world's arch bridges by the length of their main Span (architecture), span. The length of the main span is the most common way to rank bridges as it usually correlates with the engineering compl ...
*
List of bridges by length
This is a list of the world's longest bridges that are more than in length sorted by their full length above land and water. The main span is the longest span without any ground support.
''Note: There is no standard way to measure the total ...
References
External links
Autocesta Rijeka–Zagreb: Drežnik Viaduct webcam
{{DEFAULTSORT:Dreznik Viaduct
Viaducts in Croatia
Beam bridges
Bridges completed in 2001
Toll bridges in Croatia
Buildings and structures in Karlovac County
Transport in Karlovac County