At Kalvebakken in the Ramfjord, there are three juxtaposed bridges. Each bridge represents a different generation. All of the bridges span the same river and are situated above one another in the terrain, which slopes downwards toward the fjord. The oldest bridge is situated uppermost in the terrain, while the newest bridge is located at the lowest point. The uppermost bridge, a stone arch bridge, has piers and an arch built of natural hewn stone. The middle bridge is a cantilever bridge with two steel girders and a concrete bridge deck. The newest bridge is comprised of two prefabricated steel-plated supports, in two spans, with a deck of integral cast concrete elements.

The oldest bridge was built in 1911 and remained in use prior to 1958, when a new bridge was built. In 1975 the bridge from 1958 was succeeded by the bridge which is included as a part of today's (2007) main road 'Ev 8' - from Nordkjosbotn to Tromsø.

The middle bridge, built in 1958, is a cantilever bridge with two steel girders and a concrete deck. The span of the bridge measures 13 metres. Constructed of steel, the banister has concrete anchors located on both ends.

Each of the three bridges is typical of its own time period and depicts different technical solutions. During the period from 1911 to 1975, many changes occurred in Norwegian bridge building. This is well demonstrated by these three bridges.

1911

1958

1975

Statens vegvesen (The Norwegian Public Roads Administration)

Bridge

Arch bridge

cantilever bridge

natural hewn stone

concrete

steel

bridge

arch bridge

girder bridge

natural stone

concrete

steel

Statens vegvesen (The Norwegian Public Roads Administration): Vegvalg : Nasjonal verneplan. Oslo 2002, pp. 44-45.