Krka Bridge

Not to be confused with Krk Bridge.

The Krka Bridge is located in Croatia, between the Skradin and Šibenik interchanges. It is a 391 metres (1,283 ft) long concrete arch bridge spanning the Krka River at a height of 65 metres (213 ft). It carries the A1 motorway route south of Skradin, in immediate vicinity of Krka National Park.

Krka Bridge
Coordinates	43.808°N 15.915°E / 43.808; 15.915
Carries	A1 motorway
Crosses	Krka River
Locale	Southern Croatia
Official name	Most Krka
Maintained by	Hrvatske autoceste
Characteristics
Design	concrete arch bridge
Total length	391.16 m
Width	22.56 m
Longest span	204 m
Clearance below	65 m
History
Opened	2005
Statistics
Toll	charged as a part of A1 motorway toll
Location

The Krka River canyon is spanned by 204 metres (669 ft) reinforced concrete arch, with arch rise of 52 metres (171 ft). Composite spandrel structure consists of steel girders and reinforced concrete deck slab. The steel grillage consists of two main longitudinal girders at the axial distance of 7.6 metres (25 ft), transversal girders set 4 metres (13 ft) apart and peripheral beams. Immediately to the south of the bridge, there is Krka rest area offering a scenic view of the bridge and the river canyon.^[1][2]

The construction works comprised 16,000 cubic meters of excavation, 2,000 cubic meters of embankments and backfill, 11,800 cubic meters of various types of concrete and 2,300 tons of reinforcement steel. That does not include additional 1,700 tons of steel used for execution of the spandrel structure.^[3]

The Krka Bridge comprises the longest span of all the bridges on the A1 motorway, as its span surpasses the Maslenica Bridge by mere 4 m (13 ft).^[1][3] That makes the Krka Bridge the fourth largest concrete arch bridge in Croatia, by span size, behind two arches of the Krk Bridge - 390 m (1,280 ft) and 244 m (801 ft) long and Šibenik Bridge (246 m (807 ft) long).^[4][5][6][7]

Traffic volume

Traffic is regularly counted and reported by Hrvatske autoceste, operator of the bridge and the A1 motorway where the bridge is located, and published by Hrvatske ceste.^[8] Substantial variations between annual (AADT) and summer (ASDT) traffic volumes are attributed to the fact that the bridge carries substantial tourist traffic to the Dalmatian Adriatic resorts. The traffic count is performed using analysis of motorway toll ticket sales.

Krka Bridge traffic volume
Road	Counting site	AADT	ASDT	Notes
A1	5315 Skradin south	8,811	19,707	Between Skradin and Šibenik interchanges.

See also

• A1 motorway
• List of arch bridges by length
• List of bridges by length

References

1. "HAC Monografija pp 220-221". Hrvatske autoceste. May 17, 2010. Archived from the original on August 18, 2010. Retrieved August 25, 2010.
2. "Zagreb - Split motorway bridge across Krka River near Skradin". Gradimo (in Croatian). July 1, 2007. Archived from the original on September 4, 2011. Retrieved August 25, 2010.
3. "Krka Bridge". Konstruktor (in Croatian). August 25, 2010.
4. "The largest Japanese reinforced concrete arch bridge would rank the fourth in Croatia" (PDF). Vjesnik (in Croatian). April 10, 2004. Archived from the original (PDF) on June 2, 2004.
5. "Zagreb - Split motorway" (PDF). Hrvatske autoceste. July 18, 2005. Archived from the original (PDF) on July 5, 2010. Retrieved August 27, 2010.
6. "Arched bridge in Krka, Croatia". Doka Press Corner. August 27, 2010. Archived from the original on July 27, 2011. Retrieved August 27, 2010.
7. "Krka River Bridge". Structurae. August 27, 2010.
8. "Traffic counting on the roadways of Croatia in 2009 - digest" (PDF). Hrvatske Ceste. May 1, 2010. Archived from the original (PDF) on July 21, 2011.