Complex sentence: In 1957 the North Bridge of Düsseldorf (Theodor-Heuss-Brücke) was opened, creating a direct connection of Lörick with Düsseldorf (not only via Oberkassel).
Split into simpler sentences: In 1957 the North Bridge of Düsseldorf (Theodor-Heuss-Brücke) was opened. So there was a direct connection of Lörick with Düsseldorf (not only via Oberkassel).