Krasnoyarsk Railway Bridge
Coordinates: 55 ° 59 ′ 20 ″ N , 92 ° 48 ′ 45 ″ E
| Krasnoyarsk Railway Bridge | ||
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| use | Railway bridge | |
| Crossing of | Yenisei | |
| place | Krasnoyarsk | |
| construction | Truss bridge | |
| overall length | 940 m | |
| Number of openings | six | |
| Longest span | 142 m | |
| start of building | 1895 | |
| completion | 1899/1937/1999 | |
| planner | Lavr D. Proskuryakov | |
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The Krasnoyarsk Railway Bridge was the first bridge over the Yenisei . It was built for the Trans-Siberian Railway and contributed significantly to the development of the Siberian city of Krasnoyarsk . It is subordinate to the Krasnoyarskaja seleznaja doroga ( Krasnoyarsk Railway ), an independent branch of the Russian Railways . Today's bridge consists of two parallel single - track truss bridges that were opened in 1937 and 1999, respectively.
First bridge (1899)
The first railway bridge was built between 1895 and 1899 based on a design by Lawr D. Proskuryakov under the direction of Yevgeny Knorre . It was the largest structure on the Siberian railway. The single-track bridge, around 940 m long, consisted of six stream openings and two side openings above the embankments. The stream openings were Schwedler girders with spans of 142.25 m. A small, 21 m long fish-belly girder bridge connected to the elevated railway embankment over both embankments . The iron superstructure was mounted on both sides of the railway embankments and rolled onto the piers on the ice in the winter of 1898/99 with the help of overhead cranes and scaffolding.
The pillars were made of Siberian granite and extended over the entire width of the superstructure. On the upstream side of the water they had the usual at that time, sloping forward walling, which served less as a flow divider , but rather as an icebreaker to break up and laterally divert the ice drift that set in every spring . It was founded with the help of caissons according to a system that Knorre had used several times before. The pillars had to be built so high that their heads had a safe distance from the highest water level, which was 9.5 m above the lowest water level. In order not to expose the unfinished pillars to the ice drift, the masonry work was continued in winter at −40 ° C under the protection of heated wooden crates, so that in spring they had exceeded the high water mark.
Newer bridges
In the 1930s, another single-track bridge with the same dimensions was built a few meters downstream to cope with the increased traffic. It was opened in 1937.
In the 1960s, the hydroelectric power station near Diwnogorsk was built about 30 km above the city, which dammed the Krasnoyarsk reservoir and, among other things, resulted in no more ice drifting beneath the power station and the large icebreakers on the old bridge being lost.
In the 1990s, these icebreakers were used as the basis for an extension of the reinforced concrete pillars and a second, parallel superstructure was built on them directly next to the first bridge. Unlike the old bridge, the bridge, which opened in 1999, has four parallel-chorded truss girders over the middle stream openings, while the side openings were bridged with truss girders below the tracks on additional pillars.
From 2002 the historic first bridge was dismantled and scrapped until 2007.
The bridge, which was built in the 1990s, is remarkable in that its western upper chords have cantilever arms attached to which three conductors of a high-voltage overhead line are attached.
