There are 1,185 bridges in Iceland, of which 229 can be found on the Ring Road. The IRCA is responsible for the maintenance and service of the country’s bridges.

It is important that bridge design be handled in as disciplined and coordinated a manner as possible, whether the work is carried out within the IRCA or not. This needs to be ensured to the greatest extent possible, in the most efficient way.
The IRCA is responsible for monitoring the load bearing capacity of roads and bridges. The agency makes decisions regarding limitations on the total weight and axle weight of vehicles on individual bridges, if deemed necessary.
The role of the IRCA is stipulated in Act No. 120/2012 on the Icelandic Road and Coastal Administration as an executive agency for transport. The IRCA issues rules regarding bridge design; included therein are project specifications for bridge construction. Iceland is a member of the European Committee for Standardization (CEN), and works to implement the committee’s standards wherever possible. European standards on bridge design came into formal effect in Iceland at the end of the year 2011, when a country annex was published. More information on the methodology of the implementation can be found in the IRCA’s publication: Rules on Bridge Design.
The verification process is a basic principle of reliability management, cf. ÍST EN 1990.
The process consists of the following steps:
The verification process is in place to ensure documentation of the verification of the design, as well as guaranteeing that all design documents are submitted to the IRCA. The Rules of Bridge Design include aspects that refer to general project specifications for road and bridge construction. A few chapters are still in progress, such as a chapters on seismic load, suspension and cable-stayed bridges, cables and cable systems, and ferry marinas. One of the benefits of the verification process is that experience and knowledge is easily transferred between coworkers. More people come to know the project and its criteria and are therefore better prepared when it comes to solving any problems that may arise.

Aerial view of a bridge over Önundarfjörður in the Westfjords.

Aerial view of a new pedestrian, and cycling bridge over Elliðaárósar.
The IRCA has made a great effort to document and preserve historical relics, e.g. by renovating historical bridges, for which an award is now given.
Bridge | Length | Design | Year built | Rebuilt | Type | More details |
Örnólfsdalsá by Norðtunga | 33 m | Windfeld Hansen / Sigurður Thoroddsen | 1899 | suspension bridge | The only preserved bridge from the 19th century. | |
Bláskeggsá by Þyrill in Hvalfjörður | 7 m | Jón Þorláksson | 1907 | 2010 | concrete arch bridge | The oldest concrete arch bridge in Iceland. |
Fnjóská by Vaglaskógur | 55 m | Christiani & Nielsen | 1908 | concrete arch bridge | The longest concrete arch bridge in the Nordic countries for quite some time. | |
Jökulsá á Brú by Hákonarstaðir in Jökuldalur | 27.4 m | 1908 | 2008 | truss bridge | Steel structure manufactured in America. | |
Haffjarðará | 30 m | 1912 | 2011 | concrete arch bridge | Original bridge in service until 1965. | |
Kaldakvísl in Mosfellsbær | 19.3 m | 1912 | concrete arch bridge | |||
Vesturós in Héraðsvötn | 113 m | 1925 | concrete beam bridge | Bridge for pedestrians and equestrian traffic. | ||
Bakkaá in Tjörnes | 5.5 m | 1927 | concrete arch bridge | |||
Hvíta by Ferjukot in Borgarfjörður | 106 m | Árni Pálsson | 1928 | concrete arch bridge | Long concrete arch bridge with two arches. | |
Ormsá in Hrútafjörður | 22.3 m | 1929 | 2010 | arch bridge | Original bridge in service until 1983. | |
Skjálfandafljót by Fosshóll | 71 m | 1930 | steel bridge | In service until 1972. Replaced an older bridge from 1883. | ||
Botnsá in Hvalfjörður | 22 m | 1932 | 1985 | concrete beam bridge | ||
Geithúsaá in Reyðarfjörður | 18 m | 1935 | beam bridge | Built on top of beam foundations of a wooden bridge from 1905. | ||
Tunguá in Skutulsfjörður | 10 m | 1940 | concrete beam bridge | |||
Hítará | 1905 | 2008 | Old foundations from 1905, new top structure in 2008. | |||
Jökulsá á Dal by Fossvellir | 26 m | 1931 | concrete arch bridge | In service until 1994 | ||
In 2015, the IRCA was the first recipient of a Cultural Heritage Agency of Iceland Award for important pioneering endeavours in service of cultural heritage protection.
“This award is presented to the IRCA for initiating the protection and renovation of historical bridges in recent years. The IRCA has for a long time endeavoured to document and protect the heritage of its own operations pertaining to the history of road building in Iceland. The institute operates the Icelandic Road Museum, specifically to document- and communicate to the wider public the history of road construction in Iceland. The museum’s artefacts, such as machinery, equipment, tents, and work sheds are on display in a special section of the Skógar Transportation Museum. In addition to the Icelandic Road Museum, the IRCA has initiated the repair or renovation of sixteen historical bridges for preservation at their original locations.
Few technical structures have had more importance for Icelandic society than the first bridges erected over the country’s large rivers at the end of the 19th Century and in the first decades of the 20th. Therefore, it is invaluable that important examples from the evolution of Icelandic bridges have been preserved, including the only steel suspension bridge left from the 19th Century, and the first concrete bridge, built in 1907. The IRCA facilitated the rebuilding of certain bridges to a large extent, while in other cases, the renovation of individual parts sufficed. The goal of the reconstruction projects is two-fold: To ensure the preservation of historical structures and guaranteeing new, worthy uses for them, such as walking paths and riding trails. In some cases, bridges have a role when it comes to tourist attractions, i.e. at Skjálfandafljót by Fosshóll, where the walk across the old steel bridge is an important aspect for visitors in experiencing the canyon below Goðafoss waterfall. In many instances, bridges have conservation value due to their unique architecture, as well as history with regards to technology and transport. Such is the case for the concrete arch bridge across Fnjóská by Vaglaskógur. Viewed through the lens of architecture, it is one of the most beautiful structures built in Iceland in the 20th Century.”