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According to AB Kauno Tiltai, which is carrying out the construction of the bridge, it is in the middle of the pushing work on the metal floor: of the 2,425 tons planned, the part of the structure weighing 1,200 tons has already been welded and it will be withdrawn. And all this, in 3 months.
The installation of the bridge supports is also being completed, the viaduct works have begun, piles will be drilled and the foundations will be concreted.
In total, the construction of the bridge will require 42 sections weighing 60 tons each. The sections are manufactured in the Polish city of Gdynia and delivered by welding to the bridge construction site. There are 20 workers at the welding site, a total of about 70 at the construction site, divided into two shifts.
Of these constructions, one of which separates about 200-300 thousand. The process of production, delivery to Lithuania and welding takes about a month. Then there is a “push” on the river, which lasts only 2 days. The “push” from October 8 to 9 is the second stage, which took place a month ago. Two more are planned: by the end of the year, the metal floor of the new bridge should already connect the two banks of the Neris.
“We are in the middle of construction. Currently one of the main stages of the process is underway. The most important thing is the installation of foundations and bridge posts. This is already done. Then there is the” push “of the structures. Four spacers have been installed (as well as two additional supports on the struts) – the beams will be pushed over them.The longest distance between the supports is 84 meters.
Once the metal sections have been transported, they are welded together (this takes about 1.5 months) and “tightened”. Now we will “pull” the 110 meter bridge in two days. There are a total of four of these stages, this is the second. The latter will be very short ” 15 minutes Aldas Rusevičius, CEO of Kauno tiltai, explained the “push” process.
Photo by Alius Koroliovas / Managing Director of Kaunas Bridges Aldas Rusevičius
When asked to explain how the bridge structures were “thrown” over the river, the interviewee first started talking about jacks and hydraulic stations.
Managing Director of Kauno Tiltai AB: “In two days we will” pull “the 110 meter bridge”.
“Given the pressure, the cat pulls the temples under the bridge with a force of 300 tons. At the end there is a frame in which the structures are embedded. It’s like there is a “push” from behind. Teflon plates are placed between the metal structures and the creep. This increases the gliding surface and the bridge glides well. There is an avaneck called “nosimi” in front of the structures. When the bridge approaches the middle of the river, that “nose” rests on another support, so the end of the bridge is not down. In the end, the “nose” will be removed, it only plays an auxiliary role, “explained A. Rusevičius.
VIDEO: Construction of the bridge over the Neris
According to him, this method is most often used in the construction of metal bridges. The Kaunas Panemunė bridge and the bridge over Nevėžis, which leads towards Raudondvaris, were also built in this way.
Asked which is the most difficult part of constructing this type of buildings, the interlocutor assured that the production of metallic structures and the welding of profiles is the one that takes the longest. It’s a very responsive and responsible job – every seam is welded and inspected.
When the “stretch” is complete, the top will be concreted. On the metallic structures will rest concrete slabs 35 centimeters thick, waterproofing and 10 centimeters of asphalt. In total, it is promised that the construction of the bridge will consume about 4 thousand. concrete cubes.
Once the bridge is built, drivers will travel on three new lanes. The project is scheduled for completion in the fall of 2021.
Subsequently, new public tenders are promised: the central bridge of the four-lane highway will be demolished and a new one will be built, and finally the side bridge will be repaired.
The entire project, which includes the construction of a new bridge over the Neris, a viaduct over Jonavos Street and a connecting road on the right side of the A1 Vilnius – Kaunas – Klaipėda highway, is expected to be completed in 2021. September .
The entire Icelandic motorway project will separate traffic and local traffic flows: the 4 intermediate lanes separated by barriers will be used for transit traffic, the maximum speed will be increased to 110 km / h, and the 4 side lanes (two at each side) will work. the purpose of connecting roads for local traffic.
The project is being implemented in accordance with the agreement between the Highway Administration and AB Kauno tiltai “On the implementation of the reconstruction project of the 99.29 to 100.47 km section of the state highway A1 Vilnius – Kaunas – Klaipėda”.
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