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Train station alarm! Citytunnel-Hamburg has to close due to construction work!
Maintenance work in the Hamburg City Tunnel affects the connection to Altona train station from December 28th to 29th, 2025. Current DB messages.
Train station alarm! Citytunnel-Hamburg has to close due to construction work!
In Hamburg there will soon be some movement in city traffic again, because Deutsche Bahn has announced maintenance work in the city tunnel. These measures, which begin on Sunday, December 28, 2025, at 11:00 p.m. and last until Monday, December 29, 2025, at 3:00 a.m., are intended to affect the connection between the main station and Altona via Jungfernstieg and Landungsbrücken. Diversions are planned for several S-Bahn lines in order to carry out the construction work efficiently and, above all, to minimize the burden on passengers. This shared [news.de](https://www.news.de/reisen-und-leben/859217968/deutsche-bahn-news-fuer-hamburg-instandhaltesarbeiter-im-citytun nel-from-Sunday-December-28th-2025-around-11pm-to-Monday-December-29th-2025-around-3am-information-about-current-db-messages-in-the-timetable/1/) with.
The diversions are planned as follows:
- S1: Umleitung zwischen Hauptbahnhof und Altona über Dammtor und Holstenstraße. Erste Abfahrt: 23:18 ab Hauptbahnhof, 23:32 ab Altona.
- S3: Umleitung über Dammtor und Holstenstraße, Halt in Altona entfällt. Erste Abfahrt: 23:16 ab Hauptbahnhof, 23:32 ab Holstenstraße. Pendelzüge zwischen Altona und Elbgaustraße alle 20 Minuten, abfahrend sechs Minuten früher.
- S5: Fällt zwischen Elbgaustraße und Hauptbahnhof aus, fährt nur zwischen Hauptbahnhof und Stade. Letzte Abfahrt: 23:03 ab Elbgaustraße, 23:22 ab Hauptbahnhof.
- S2/S7: S7 fährt als S2, Umleitung über Dammtor und Holstenstraße nach Diebsteich, Halt in Altona entfällt. Erste Abfahrt: 23:20 ab Hauptbahnhof.
Background of the work
The current maintenance work is not an isolated case. Deutsche Bahn is also planning regular construction work in the City Tunnel for 2026 in order to secure the infrastructure in the long term and increase comfort for passengers. The work should take place during the night to keep disruptions to daytime traffic as low as possible.
In terms of punctuality, compared to 2023, Deutsche Bahn notes that 64 percent of long-distance trains were on time, while 36 percent arrived at least six minutes late. In 2025, punctuality could still fall short of the planned targets, as the railway only had around 55 percent of long-distance trains on time in September, which represents a decline compared to previous years. Construction sites, technical malfunctions and vandalism were identified as the main causes, as tagesschau.de reported.
The future of Deutsche Bahn
The new CEO Evelyn Palla is committed to ensuring that Deutsche Bahn remains sustainable. A central topic is the measures to improve punctuality. Federal Transport Minister Patrick Schnieder has formulated ambitious goals for the coming years: he is aiming for a punctuality rate of at least 70 percent in long-distance transport by 2029 and even 90 percent in the long term. In local transport, punctuality should even be permanently at 90 percent.
Another important concept that contributes to the stabilization of rail operations is the “SB² – Building in Time” program, which was launched in 2023. The aim is to combine driving and building in a forward-looking manner and thus improve planning. According to Deutsche Bahn, over 70 percent of the planned work should be implemented within the defined time frames in order to minimize future disruptions for travelers, as deutschebahn.com reports.
In summary: Even if Deutsche Bahn is struggling with some challenges, there are important innovations and strategic plans on the agenda to improve punctuality and ensure comfort for passengers. The upcoming maintenance work in the City Tunnel is just one of many measures to make the infrastructure fit for the future.