ÖBB to add second track St. Pölten–Herzogenburg by end of 2036

For the roughly 8 km section between St. Pölten and Herzogenburg on the Tullnerfeld line, ÖBB is planning a second track including electrification because the line is reaching its capacity limit; trains are then to be able to run at 160 km/h instead of 120. Baseline surveys for the environmental impact assessment are starting now; from 2028 two level crossings in Unterradlberg and Oberradlberg are to be replaced by an underpass first and flood protection built (traffic through the underpass from mid-2029), while the expansion itself starts in 2031 at the earliest and enters service at the end of 2036. The package also includes step-free rebuilds of the stations at Unterradlberg, Viehofen and St. Pölten Traisenpark with a new railway bridge over the L5036; the article gives no investment figure. Announced on 3 August 2026. The date is a placeholder: the article gives only the end of 2036 for commissioning. (LOK Report, 3 Aug 2026)