This wooden structure is a meter gauge version of what the original bridge over the river Kwai
might have looked like if it had been built like its iron replacement (it turns out it wasn't. Enjoy the bridge anyway).
NOTE! This can be converted to 3 ft gauge by changing the kuid for the built-in rail-only track in the config file.
The difference is small enough that the stringers under the ties will still be under the rails.