Sognefjord Span

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The Sognefjord Spans are the second, third, and fourth longest spans in the world situated east of Hermansverk, Norway and are part of different powerlines. As Sognefjord Span is a deep valley the pylons of these spans are not taller than ordinary pylons. In order to avoid any too close approaches or contacts between the conductors, each is mounted on a separate pylon at the end of the span, which is built as a steel framework tower.

Span 1[edit]

This span is part of the powerline between Hermansverk 61°10′49″N 6°51′53″E / 61.18028°N 6.86472°E / 61.18028; 6.86472 (Hermansverk) and Vikøyri 61°04′50″N 6°35′13″E / 61.08056°N 6.58694°E / 61.08056; 6.58694 (Vikøyri) and was built in the 1950s. It has a length of 4850 metres and was until the inauguration of Ameralik Span the longest span in the world. The span, which crosses Sognefjord in North-South direction, has 4 conductors, whereby one is for reserve. Its northern ends are at
61°10′30″N 6°54′14″E / 61.17500°N 6.90389°E / 61.17500; 6.90389 (Sognefjord Span 1, Tower North 1)
61°10′29″N 6°54′16″E / 61.17472°N 6.90444°E / 61.17472; 6.90444 (Sognefjord Span 1, Tower North 2)
61°10′29″N 6°54′19″E / 61.17472°N 6.90528°E / 61.17472; 6.90528 (Sognefjord Span 1, Tower North 3)
61°10′27″N 6°54′21″E / 61.17417°N 6.90583°E / 61.17417; 6.90583 (Sognefjord Span 1, Tower North 4)

and its southern ends are at
61°08′21″N 6°51′13″E / 61.13917°N 6.85361°E / 61.13917; 6.85361 (Sognefjord Span1, Tower South 1)
61°08′20″N 6°51′17″E / 61.13889°N 6.85472°E / 61.13889; 6.85472 (Sognefjord Span1, Tower South 2)
61°08′19″N 6°51′18″E / 61.13861°N 6.85500°E / 61.13861; 6.85500 (Sognefjord Span1, Tower South 3)
61°08′16″N 6°51′18″E / 61.13778°N 6.85500°E / 61.13778; 6.85500 (Sognefjord Span1, Tower South 4).

Span 2[edit]

Just a few hundred metres east of Span 1, the powerline from Stakaldefossen 61°26′48″N 6°00′49″E / 61.44667°N 6.01361°E / 61.44667; 6.01361 (Stakaldefossen) to Refsdal: 61°01′15″N 6°34′08″E / 61.02083°N 6.56889°E / 61.02083; 6.56889 (Refsdal) crosses Sognefjord with a 4520 metres long spanin East-West direction. As Span 1 it has 4 conductors, whereby 1 is as reserve. The locations of the towers used for this span are at its werstern end:
61°08′08″N 6°51′37″E / 61.13556°N 6.86028°E / 61.13556; 6.86028 (Sognefjord Span2, Tower West 1)
61°08′07″N 6°51′38″E / 61.13528°N 6.86056°E / 61.13528; 6.86056 (Sognefjord Span2, Tower West 2)
61°08′05″N 6°51′39″E / 61.13472°N 6.86083°E / 61.13472; 6.86083 (Sognefjord Span2, Tower West 3)
61°08′04″N 6°51′40″E / 61.13444°N 6.86111°E / 61.13444; 6.86111 (Sognefjord Span2, Tower West 4)

and at its eastern end:
61°08′28″N 6°56′39″E / 61.14111°N 6.94417°E / 61.14111; 6.94417 (Sognefjord Span2, Tower East 1)
61°08′27″N 6°56′39″E / 61.14083°N 6.94417°E / 61.14083; 6.94417 (Sognefjord Span2, Tower East 2)
61°08′25″N 6°56′36″E / 61.14028°N 6.94333°E / 61.14028; 6.94333 (Sognefjord Span2, Tower East 3)
61°08′24″N 6°56′36″E / 61.14000°N 6.94333°E / 61.14000; 6.94333 (Sognefjord Span2, Tower East 4) .

Span 3[edit]

Approximately 9 kilometres east-south east of these spans, there crosses the line from Aurland1 60°51′46″N 7°18′04″E / 60.86278°N 7.30111°E / 60.86278; 7.30111 (Aurland1) to Langedøla 61°26′14″N 7°14′44″E / 61.43722°N 7.24556°E / 61.43722; 7.24556 (Langedøla) Sognefjord in a span with a length of 4500 metres in North-South direction. It has no reserve conductor and consists therefore of 3 ropes. Its towers are situated at its southern end at
61°6′19″N 7°03′53″E / 61.10528°N 7.06472°E / 61.10528; 7.06472 (Sognefjord Span3, Tower South 1)
61°6′20″N 7°03′55″E / 61.10556°N 7.06528°E / 61.10556; 7.06528 (Sognefjord Span3, Tower South 2)
61°6′21″N 7°03′58″E / 61.10583°N 7.06611°E / 61.10583; 7.06611 (Sognefjord Span3, Tower South 3)

and at its north end at
61°8′45″N 7°02′56″E / 61.14583°N 7.04889°E / 61.14583; 7.04889 (Sognefjord Span3, Tower North 1)
61°8′45″N 7°02′59″E / 61.14583°N 7.04972°E / 61.14583; 7.04972 (Sognefjord Span3, Tower North 2)
61°8′46″N 7°03′02″E / 61.14611°N 7.05056°E / 61.14611; 7.05056 (Sognefjord Span3, Tower North 3)
.

See also[edit]

External links[edit]