The new S4

The S4 project from Hamburg to Bad Oldesloe

Hintergrund-Ebene der Zuganimation in der StadtAnimierter ZugVordergrund-Ebene der Zuganimation in der Stadt
Latest NewsInvitation to the digital Info Event in Section 2 on 4th April 2023More information

Opening hours in our S4-Info Train
Thursdays, 3.30 – 5.30 p.m.
Tuesdays for groups by previous appointment at S4 (at) deutschebahn.com 

More convenient, more efficient and more punctual 

Regional rail services between Hamburg, Ahrensburg and Bad Oldesloe have seen a steady increase in passenger numbers in recent years. We are responding by constructing the S4. This new S-Bahn line will provide the region's inhabitants with better local transport between Hamburg and Bad Oldesloe. Some 250,000 people will benefit from this new service.

Opportunities and Benefits      Financing 

Conservation from day one
Modern noise control along the route
Answers to the most important questions

  • Conservation from day one

  • Modern noise control along the route

  • Answers to the most important questions

In-depth information about the planning process and our construction work

20 kilometres of existing line from Hasselbrook to Ahrensburg-Gartenholz will be upgraded for the new S-Bahn service. The project consists of three sections. Each of them has its own specific planning procedure, which means separate approval is necessary for every section. 

Work on the LineFind out about the project's different stages, the S4's route and the sites of the new line's stationsPlanning ApprovalInformation about the planning approval decision and what happens before construction starts
PFA1Section 1
PFA2Section 2
PFA3Section 3
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Our project diary

There's a lot happening when it comes to the planning and construction of the new S4. Our project diary keeps track of the latest developments and follows how the project is going. Members of the project team also provide details about their work so you know more about what's happening in the background. It's a mine of interesting information. Enjoy!

Monday, 27. March 2023

Invitation to the digital Info Event in Section 2

Dear residents,

we would like to inform you today that our planning for section 2 of the project is progressing. We will be pleased to inform you shortly about further details regarding the display of the documents.

At an Info Event, we would like to inform you about everything important concerning the construction phase 2. We would like to welcome you to this digital event on Tuesday, 4 April from 6 to 8 pm. We will inform you about our construction plans, the further process and will be available to answer your questions about the S4. Prior registration is not necessary.

Direct exchange with you is important to us! During the digital event, you can simply ask your questions in the chat. Our experts from the fields of planning, construction, environment and noise protection will answer them.

To the digital Info Event

Monday, 30. January 2023

Agile construction at the S4

Agiles Bauen bei der S4

Welt.de/Bertold Fabricius

General Project Director Amina Karam at the S4 construction site in Wandsbek

Agile construction and the faster realisation of large infrastructure projects - especially in rail transport - is on everyone's lips. Amina Karam told Welt-Wirtschaftsreporter Olaf Preuß in an interview why the S4 urban railway line is a pilot project for this and how agile and flexible construction is being carried out using a wide range of methods.

You can read the whole article here.

Monday, 19. December 2022

The S4-Team wishes you Merry Christmas!

Merry Christmas!
Find out more