1900, KBS 310) east of Weddel station 6.6 km (4.1 mi) east of Braunschweig Hauptbahnhof (near the line's 10 km (6.2 mi) chainage point) and runs as a single track to Lehre station.

This station has no passenger facilities, but has two tracks, which provide the only possibility for trains to overtake or cross on the route.

At the eastern end of the line a two-track main line was planned from Fallersleben, where the Volkswagen works is now connected with the Lehrte Railway, to the planned new Brunswick central station (about where the current station was opened in 1960) and on to the newly built steel mill in Salzgitter.

Of the planned works only the single track section north of Lehre had been completed by 1942 and this was attached temporarily to the existing branch line; construction work then stopped because of World War II and the old line was closed between Lehre and Fallersleben.

This temporary connection remained for over fifty years, although the branch line was used by up to 20 freight trains a day.

Although a direct connection was considered between Oebisfelde and Brunswick, this idea was dropped in the face of strong opposition from the city of Wolfsburg.

In November 1996, the Federal Ministry of Transport agreed to release DM 242 million for the project and after the finalisation of planning approvals large-scale construction began in 1997.

Although it was originally planned to open the new line in early 1999, in May 1998 Deutsche Bahn decided to complete it at the same time as the Hanover–Berlin high-speed line, because DB considered that Hannover Hauptbahnhof would not cope with all Intercity-Express being routed that way, which would require a reversal.