Full resolution (JPEG) - On this page / på denna sida - X. Internal Communications - 1. Railways. By [G. Welin] T. Hamnell
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602 x. internal communications.
method that was employed for the erection of the iron-construction of the great
span across the stream.
In erecting the span across the river, no fixed supports from the river-bed
were employed, as their employment would, in consequence of the great height,
have added considerably to the cost of the bridge, but the iron-construction work
of the central span proceeded unsupported, from either side of the river, and
was continued until the two half-sections of the span met above the centre of
the stream, at a distance of 52 meters from the sides, and were then united
with each other.
Railway-bridge (of granite) over the Flåsjöälven.
The iron track-way of the bridge weighs 1 244 tons, and the total cost of
the erection, inclusive of foundations and stonework, which latter everywhere
consists of granite-faced beton, amounted to about 860 000 kronor. The bridge
was opened for traffic on September 26, 1912. Further may be mentioned the
bridge over the Öre älv, which is 168’9 meters long and has four arches, the
longest of which is 53 meters; the bridge over the Ume älv, which is 178’5
meters long and has three arches, two of which are 59"6 meters each; one of
the bridges over the Vindelälven, which is 181 meters long and has four arches,
two of which are 62 meters each; and the bridge over the Lule älv, which is
162 meters long and has three arches, the longest of which is 62 meters. Two
important bridges have been constructed on the State line through Bohuslän,
viz., those over the rivers Göta- and Nordre älvar, both erections being provided
with swinging-spans, so that the bridges may not be a hindrance to navigation.
The swing-bridge across the Göta älv, of a total length of 50’2 meters, is one
of the largest moveable bridges in the country. The bridge over the Nordre
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