Swietelsky reconstruction railway by SMD-80

LTC (Join to see), I also found it interesting that concrete ties were replacing wooden ties.

I'm actually curious how that will play out in years to come. The ground isn't exactly static... tectonic shifts, earthquakes and such, erosion (even inland), rains and floods can all change the topology, even slightly. Wooden railway ties can handle that kind of shifting, even with the heavy steel rails over top, not to mention the trains themselves speeding down the tracks. Concrete? Not so much. Sure, concrete barriers are fine and all in parking lots... where they don't have things resting on them, and certainly don't have to keep a delicate alignment intact. This just sort of seems (at least to me, a complete layman in terms of civil engineering) like a disaster waiting to happen.