Russian engineers installed a giant railway arch in the channel between Russia and Crimea, as a 19km road-rail bridge takes shape.
It will take about a month to fix the arch, weighing 6000 tonnes, to massive supports in the water.
The road section of the Kerch Strait bridge will also have a giant arch, BBC reported.
The project's official website says the bridge should be completed by the end of next year, when the first cars will cross it. Then rail traffic will start crossing it in 2019.
