I was thinking about mentioning that... yes! Construction on this project began 13 years ago so it needs to be taken into consideration. A similar project in Australia would've seen a drift of up to several metres in this time [0]. Europe has another angular CRS for this reason [1].

[0]: https://theconversation.com/australia-on-the-move-how-gps-ke...

[1]: https://www.killetsoft.de/t_1009_e.htm