Hi sef43, thank you for reaching out.
TomTom proprietary GPS traces show no vehicle movement in the last month between nodes 327216001 and 327216037, suggesting the road segment is not yet operational. Moreover, A28: Ersatzneubau einer Brücke an der Anschlussstelle Zwischenahner Meer suggests that the construction will be completed by the end of 2025. I based my edits over the above information. Please let me know if the situation is different than stated.