Bridge in Mjóifjörður, Iceland
Opened in September 2009, the Mjóifjörður bridge represented the final phase of improvements to the Djúpvegur route in Iceland's Westfjords.
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 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, high-strength bars suspended the bridge floor from the arches.
The bridge floor, a key component of the Mjóifjörður bridge, was meticulously constructed. It consists of two welded longitudinal box girders connected by traversing box structures spaced at 4 m intervals. These structures, along with pre-cast concrete elements, provided formwork for the upper part of the concrete slab, which was cast in situ. The bridge, with a total width of 11 m, has a roadway that occupies 8 m of this space.
The arches' supports are grounded on bedrock at each end of the structure, and they are merged with the road fill to make them as unobtrusive as possible.
The bridge, which opened in 2009, was constructed using 330 tons of steel and 1,000 m3 of concrete.
EFLA's role
- Conceptual design
- Final design
- Construction services