On the Oldenburg–Wilhelmshaven dual-track line 1522 between Varel and Sande from km 35.200 to km 43.950; permissible travel speeds will be increased to 120 km/h and axle loads to 23.5 tonnes. The section of line, including tracks and structures, is to therefore undergo complete renewal during single-track operation and weekend closures.

• approx. 17,200 m of track renewal
• approx. 17,200 m of drainage work
• Installation of a geotextile-coated protective layer for 2 tracks along 2,230 m
• Soil improvement using the milling-mixing injection method to a depth of 9 m over a distance of 6,200 m
• Construction of 180 m of roadway foundations on 105 bored piles up to 28 m in length
• Soil improvement via partially cemented vibrating stone columns over a distance of 220 m
• Renewal of a steel bridge built on drilling piles 
• Installation of support plates over existing culverts in FMI sections
• Underground cable construction along 8,600 m of track length
• New noise barrier 870 m in length
• Technical equipment