With the opening of the Berlin-Frankfurt Railway on 31 October 1842 from Berlin's Silesian station to Frankfurt (Oder) the now loosely connected German railway network now had a total length of just under 1,000 km.
On 1 September 1846, the last section (Frankfurt (Oder) - Bunzlau) of the Lower Silesian-Märkisch Railway was opened, linking the two great cities of Prussia, Berlin and Breslau.