Bridge, Mjóifjörður, Iceland

Opened in September 2009, the Mjóifjörður bridge represented the final phase of improvements to the Djúpvegur route in Iceland's Westfjords, along with another EFLA project, the 25 km road traversing the Arnkötludalur valley.

About this Project

The Icelandic Road Administration


Mjóifjörður, Westfjord, Iceland


The project's objective

EFLA was commissioned to design the Mjóifjörður bridge in Iceland's Westfjords, and the work began in 2004. The structure is 130 m long and consists of two steel arches linked together and sloping towards each other, rising to a height of 14 m above the road surface. The arch span is 107 m, the longest in Iceland. Constructed of composite steel girders and a concrete slab, the bridge floor is suspended from the arches by high-strength bars.

The main section of the bridge floor is constructed from two welded longitudinal box girders connected by traversing box structures spaced at 4 m intervals, between which are pre-cast concrete elements. This provided formwork for the upper part of the concrete slab, which was cast in situ. The total width of the bridge is 11 m, of which the roadway occupies 8 m.

Supports for the arches are grounded on bedrock at each end of the structure, and they are made as unobtrusive as possible by merging them with the road fill.

A total of 330 tons of steel and 1,000 m3 of concrete were used for the bridge, which opened in 2009.

EFLA's role

  • Conceptual design
  • Final design
  • Construction services