The new S4

The S4 project from Hamburg to Bad Oldesloe

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Latest NewsInformation for local residents: construction work in OctoberMore 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 

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 

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, 25. September 2023

Information on the display of documents in Section 3

On September 26, 2023, the display of the planning approval documents for Section 3 will begin. Up to and including October 25, 2023, you will have the opportunity to obtain information about the documents at the following locations and online here:

  • Ahrensburg – Peter Rantzau-Haus (1st floor, Manfred-Samusch-Straße 9, 22926 Ahrensburg): Monday to Friday from 9 a.m. to 5 p.m.
  • Bargteheide – Amt Bargteheide-Land (Room 211, Eckhorst 34, 22941 Bargteheide): Monday, Thursday and Friday from 8 a.m. to noon, Tuesday 8 a.m. to noon and 2 p.m. to 6 p.m., Wednesday closed
  • Großhansdorf – Town Hall, Großhansdorf Municipality (1st floor foyer, Barkholt 64, 22927 Großhansdorf): Monday from 9 a.m. to noon and 2 p.m. to 4 p.m., Tuesday from 9 a.m. to noon, Wednesday from 7:30 a.m. to noon, Thursday from 3 p.m. to 6 p.m., Friday closed.

All citizens have two weeks (up to and including November 8, 2023) to submit objections.

Objections can only be submitted or sent in writing or in writing to the above-mentioned display locations or to the Ministry of Economics, Transport, Labor, Technology and Tourism of the State of Schleswig-Holstein (Office for Transport Planning Approval, Hopfenstraße 29, 24103 Kiel).

You can also find the documents for construction section 3 on our website here in the media centre. More information in our press information

Wednesday, 13. September 2023

S4-arena in Ahrensburg - communication at eye level

S4 Team

DB Netz AG

Overall Project manager Amina Karam and the S4-team

200 people from Ahrensburg came to the Peter-Rantzau-Haus in summery 30 degrees Celsius to discuss the most important topics of the S4. The main topics were: Noise protection, Stellmoor tunnel valley as well as construction logistics in the city. "My team and I take these issues very seriously. That's why we have developed alternative proposals that we believe will be an improvement for the citizens," explained overall project manager Amina Karam. The S4 is being built for the people, not against them.

From Karam's and DB's point of view, the aim of the evening was to get into a real conversation with the people of the city. To this end, DB designed a new dialog format. Chairs and bar tables were set up in a circle in the hall for the event's guests. Moderation and project management operated from the center of the hall. "We want to show people that we are talking to them at eye level. We succeeded very well in doing that," Karam explained. The exchange with the peple from Ahrensburg lasted two and a half hours - a marathon.

Monday, 4. September 2023

We celebrate the "Tag der Schiene 2023" together!

Tag der Schiene 2023

We would like to celebrate the "Tag der Schiene 2023" with you and cordially invite you to our event at the S4-Info Train. 

Wann?      Friday, 15 September, 1 to 6 p.m.
Wo?           S4-Info Train, Hammer Straße, 22043 Hamburg

27.09.2023Construction site camera on section 1