In total, 68 stay cables will be installed
Installation of a cable-stayed system on the bridge under construction across the Oka River on the M-12 Moscow – Nizhny Novgorod – Kazan Highway has begun. Specialists of Bamtonnelstroy-Most Group of Companies have installed the first pair of stay cables, each 49.3 m long.
During the cable-stayed system installation, bundles of cables (strands) are cut and sheathings of the required length are prepared at site of the superstructure. Аfter that, the first strand is pulled through the sheathing and fixed with a holder. The upper end of the sheathing is lifted up by a tower crane and fixed on the pylon, while the lower end is fastened to the superstructure. Afterwards, the sheathing is filled with the remaining strands.
In total, 34 pairs of stay cables will be installed on the bridge across the Oka River – 17 to each one of the two pylons. The length of the shortest stay cable is 39.2 m, and the longest one is 130.6 m long. The number of strands inside the stay cables varies from 9 to 60. Each strand consists of 7 wires with a total diameter of 19.2 mm.
The bridge across the Oka River is the only cable-stayed bridge on the M-12 Moscow – Nizhny Novgorod – Kazan Highway under construction. It will connect the banks of the Vladimir and Nizhny Novgorod regions near the city of Murom. The bridge is 1,377.6 m long and has a 254-meter-long cable-stayed central span. 1,100 people and more than 100 units of equipment are involved in its construction. Work is going on around the clock.