Kamačnik Bridge is located between the

Vrbovsko Vrbovsko ( sr-Cyrl, Врбовско) is a town in western Croatia, situated at the far east of the mountainous region of Gorski Kotar in the Primorje-Gorski Kotar County; on its 280 square kilometers area, Vrbovsko features 60 settlements and a t ...

and Ravna Gora interchanges of the A6 motorway in

Gorski Kotar Gorski Kotar () is the mountainous region in Croatia between Karlovac and Rijeka. Because 63% of its surface is forested it is popularly called ''the green lungs of Croatia'' or ''Croatian Switzerland''. The European route E65, which connects B ...

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 ...

, spanning

Kamačnik Kamačnik is a right tributary of the Dobra that runs through a canyon covered in dense beech forest. Kamačnik canyon gained legal protection in 2002 by decision of the Županijska skupština of Primorje-Gorski Kotar County, which can be found i ...

stream. It is long. The bridge was designed by

Zlatko Šavor Zlatko ( sr-Cyrl, Златко, ) is a South Slavic masculine given name. The name is derived from the word ''zlato'' meaning gold with hypocoristic suffix ''-ko'' common in South Slavic languages. Zlatko is a given name. Notable people with the na ...

. It consists of two parallel structures, both completed in 2003 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 ...

. The bridge is tolled within the A6 motorway

ticket system A ticket system, also known as a closed toll collection system, is a system used on some toll roads in which a user pays a toll rate based on the distance traveled from their originating entrance to their destination exit. The correct toll is d ...

and there are no separate toll plazas associated with use of the bridge. The bridge spans deep Kamačnik stream bridge canyon which is legally protected as a listed landscape. This prevents any construction on the canyon cliffs and in turn requires an asymmetrical structure across a span of approximately .

Structure description

At this location the motorway route follows a horizontal curve therefore the transversal grade of the deck is slightly increased. It is constant and equals 4.2%, while elevation grade of the bridge is constant at 5.7%, sloping down towards Vrbovsko. The bridge is a box girder structure supporting the deck across three spans. The southbound bridge spans are + + . Its piers are and tall. The northbound bridge spans are + + . Its piers are and tall. All of the piers comprise box cross section, (perpendicular to the bridge axis) by to (parallel to the bridge axis. The parallel bridge structures were built simultaneously.

Traffic volume

Traffic is regularly counted and reported by Autocesta Rijeka–Zagreb, operator of the viaduct and the A6 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.

References

{{DEFAULTSORT:Kamacnik Bridge Box girder bridges in Croatia Bridges completed in 2003 Toll bridges in Croatia Buildings and structures in Primorje-Gorski Kotar County Transport in Primorje-Gorski Kotar County

Structure description

Traffic volume

See also

References