The new S4

The S4 project from Hamburg to Bad Oldesloe

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Latest NewsInformation for local residents: construction work in April 2024More information

Opening hours in our S4-Info Train

Thursdays, 3.30 – 5.30 p.m.
Tuesdays for groups by previous appointment at S4 (at) 

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!

Thursday, 25. April 2024

Exploring Careers: Girls’Day Experience at S-Bahn Line S4

Girls’Day 2024 auf der Baustelle der S-Bahnlinie S4


Girls’Day 2024 on the construction site of the S4 S-Bahn line

We were delighted to welcome two very interested students on April 25th as part of Girls’Day!

Girls’Day is a nationwide orientation day for girls from 5th to 13th grade. The aim is to explore professions where the female representation is below 40%, or to meet women in leadership positions.

Wednesday, 24. April 2024

Milestone reached: Hearing for construction phase 2 completed

Group photo of DB and technical experts at the hearing of the S-Bahn line S4 for construction section 2


DB and technical experts at the hearing of the S-Bahn line S4 for construction section 2

On April 24, 2024, another significant milestone was reached in the construction of the S-Bahn line S4. On this Wednesday, we successfully concluded the hearing for the second construction section which extends from Luetkensallee to the border between Hamburg and Schleswig-Holstein. The hearing lasted a total of three days and was characterized by intense exchange and dialogue with the participants. It was a non-public, oral hearing in accordance with the Hamburg Administrative Procedure Act, conducted by the Hamburg Authority for Economy and Innovation as the hearing authority. We were represented by numerous internal and external experts from Deutsche Bahn as the project developer, and we were able to discuss the interests of all those who submitted objections or statements. Participants included objectors, public interest entities, and authorities.

Wednesday, 10. April 2024

The S4-Team wishes a blessed Eid!

10.05.2024Construction site camera on section 1