The entrance building was rebuilt and given extensions. In the course of this rebuilding, the Garte Valley Railway ("Gartetalbahn"), a 750mm narrow gauge railway to Duderstadt that had previously ended at the station, was cut back to run to end at its own station about 400 metres further south; this line was closed in 1959. The station was largely destroyed by bombing during the Second World War. The station and the station hall were rebuilt in the postwar period in a simplified form with a redesigned facade. Göttingen was connected to the electrified rail network in 1963. In the 1960s, the station forecourt was rebuilt again and aligned for the requirements of motor traffic. The buses that previously stopped almost directly in front of the station have since operated from a central bus station to the south of the station building and a car parking area was built in front of the station. The first railway to Kassel, the section of the Hanoverian Southern Railway that ran via Dransfeld, was closed in May 1980. During the construction of the Hanover–Würzburg high-speed railway between 1984 and 1989, the station was extensively remodelled. It was extended to the west to a new platform serving tracks 10 and 11, the previous platform C (serving tracks 8 and 9) was demolished and rebuilt in the style of the new platform adjacent. Several buildings of the former workshop were demolished to build a new western entrance, including a passenger train servicing facility, which was re-erected elsewhere. The 400 m long platform C went into operation at the winter 1988/89 timetable change. In 1981, it had been planned that the new line would have three tracks through the station area: apart from the two main tracks of the new line (the southern edge of platform C and the northern edge of platform D) it would have a track overtaking passenger trains (the southern edge of platform D). The original platform C was only used by services running to Bodenfelde. The first plans for the new line in Lower Saxony, submitted in 1971, provided for a route though the Weser Uplands via Holzminden. After protests in the state and various studies and reports, the current route via Göttingen was adopted in 1976. The first of the two platforms for the new line was completed in September 1987. A total of 4.0 km of the tracks were adapted in the western part of the station area. The station area was a separate zoning section of the new line (no. 3.8 from km 98.750 to 101.000).