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 NewsThe October Resident Information is online – an overview of all construction work.More 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 

Passenger numbers on northern German rail services have risen sharply in recent years, and the necessary mobility turnaround is expected to lead to even more people switching to rail in the future. To make this possible, the infrastructure at the Hamburg hub is being massively expanded
Passenger numbers have also been rising steadily for years on regional services between Hamburg, Ahrensburg and Bad Oldesloe. 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 

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. 

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, 30. September 2024

A sunny Friday, 6 hours construction site and 45 interested guests – “Railway Day” at the S4

Amina Karam und Ole Buschhüter

DB InfraGO AG

Interested citizens explore the construction site together with the S4 team

On Friday, September 20th, as part of the nationwide “Tag der Schiene 2024” (Day of the Railway 2024), we organized three construction site tours in the first section of the future S-Bahn line S4 for the public. The demand was high, and the tours had been fully booked for weeks. However, more regular public tours are planned to occur soon, and we will, of course, keep you updated here.

Wednesday, 31. July 2024

Every year anew: General Director Amina Karam welcomes MdHB Ole Thorben Buschhüter to the S4 construction site

Amina Karam und Ole Buschhüter

DB InfraGO AG

Ole Thorben Buschhüter (SPD) MdHB and Amina Karam, General Director S-Line S4 & General Overhaul Hamburg-Lübeck at the construction site of the S-Line S4.

We had the pleasure of welcoming Ole Thorben Buschhüter (SPD) MdHB and his team to our construction site in Hasselbrook on 31 July 2024. As part of a regular exchange, Mr Buschhüter visits the construction site once a year to learn about the progress of the S4 project.

Friday, 26. July 2024

Together We Are Strong: Build the S4 with Us!

Engaging with the residents is a central and vital part of our mission. Our goal is to build the S4 railway line not just for the citizens, but with them. This means actively involving them in the project. We strive to explain what to expect and address their needs as much as possible. To achieve this, we offer exciting construction site tours, personal meetings, our interactive Info Train, as well as our email and citizen hotline.

02.09.2024Construction site camera on section 1