Amur region 926-meter long new Kerak tunnel will be built to replace old tunnel. Trains will go faster and it will be longest tunnel on the Trans-Baykal Railway. Russia increase railway network modernzation in eastern part of the country to increase exports to China.

https://www.eastrussia.ru/news/novyy-tonnel-na-transsibe-nachali-stroit-v-priamure-/