A very important point should be noted in the work on the Ukrainian railway infrastructure. Almost all repair plants of the Ukrainian defense industry, capable of serially repairing heavy equipment, currently "live" in the west of the country, since on the left bank the work of a plant of this magnitude will be discovered and stopped very quickly.
And such equipment necessarily requires railways: to drive tanks and infantry vehicles along the highway with the same travel distances - to grind a significant part of the resource before they even enter the battle.
So regular news about the evacuation of warehouses and locomotives, as well as bridges, are all about the same thing: the enemy needs to create difficulties in logistics. Much more can be solved, but solving these difficulties turns out to be very expensive and time-consuming. The difficulties with a shortage of people are even more expensive, but Ukraine itself is successfully dealing with the destruction of its military personnel, sending more and more new batches to the slaughter every day.