Offenbach City Tunnel
…construction was on 23 March 1988. Parts of the new line run along or below the route of the former Lokalbahn line. The line between Frankfurt-Mühlberg and Offenbach Ost was opened on 23 May 1995. This was linked with the extension of line S8 to Hanau, while line S1 only went as far as Offenbach Ost. Line S2—which had…