Fundamental expansion of Naumburger Straße

The construction site covers the area of Naumburger Straße between the junction with Flurweg and the northern junction with Carl-Orff-Straße.

The area between the junction of Camburger Straße and Flurweg was already completely renovated between 2018 and 2020 and the streetcar line was extended to two tracks.

The extensive construction project will begin - subject to suitable weather conditions - on March 2, 2026 and is expected to last until June 2029. The work will be carried out in several construction phases:

1st construction phase

Jena town exit - Carl-Orff-Straße south junction
Construction period: March 2026 to June 2027

2nd construction phase

Carl-Orff-Straße south junction to Juri-Gagarin-Straße
Construction period: June 2027 to December 2027

3rd construction phase

Juri-Gagarin-Straße to the junction with Netto-Markt / Zwätzen turning loop
Construction period: December 2027 to June 2028

4th construction phase

Junction Netto-Markt / turning loop Zwätzen to junction Brückenstraße
Construction period: June 2028 to September 2028

5th construction phase

Junction Brückenstraße to Flurweg
Construction period: September 2028 to May 2029

Preparatory measures to clear the construction site have been underway since the end of January.

In the period from 02.03. to 30.11.2026 there will be a full closure between the southern Carl-Orff-Straße and the end of Jena. There will be a large-scale detour in both directions from Camburg / Rodameuschel via the L1070 to Trotz, from Trotz on the B7 via Bürgel to Jena. The Carl-Orff-Straße Süd junction is passable throughout.

Current closures, detour and information about the roadworks can also be found in the City of Jena's roadworks report.

"We are aware that the construction work means a stressful time for commuters and residents. That's why we looked intensively for ways to keep the duration of the closure as short as possible. We are therefore pleased that we have succeeded in reducing the originally planned full closure period from 18 to 9 months - even though we are aware that this period will still be associated with considerable restrictions. My special thanks go to the constructive discussions with the affected districts and communities - together we were able to find a viable solution," emphasizes department head Dirk Lange.

The accessibility of the adjacent properties is guaranteed as far as possible. However, restrictions cannot be completely ruled out - especially in the Brückenstraße - Maria-Pawlowna section. Increased traffic volumes are to be expected in the rest of the area due to the detour.

Initially, streetcar traffic will not be affected by the construction work. Work will begin in the north and therefore in the sections where the new streetcar line is being built.

However, the full closure of Naumburger Straße will lead to restrictions on regional bus services operated by JES Verkehrsgesellschaft.

As a result, journeys on routes 420 and 426 from Porstendorf will be diverted in both directions via Golmsdorf and Kunitz to Jena. Selected journeys on route 420 will be routed via Himmelreich and will also serve the Zwätzen, Schleife stop. Line 422 will run via Rödigen during the construction period.

The specific construction timetables will be published in good time on the Jena public transport website.

Citizens can find out more about the construction project at the following public events:

Public information events

04. 02.2026

At 18:00 in the Rautalschule (Schreckenbachweg 3, Jena) as part of the meeting of the Zwätzen district council.

10.02.2026

The city of Jena, Jenaer Nahverkehr and the commissioned engineering office HI Bauprojekt GmbH invite you to a hybrid information event from 18:00 to 20:00. The event will take place online as an MS Teams live event. The speakers will be connected via microphone and camera. Questions can be asked via the comment function (Q&A).

For people without online access, the event will be broadcast in the Kommunalservice Jena building:
Löbstedter Straße 68, 3rd floor, consultation room 3.10, Jena

The topics of the information events are

• the planned construction process
• the restrictions to be expected, in particular the detour and accessibility of properties during the construction period

The total cost of the project is around 53.8 million euros (gross). A large proportion of the costs can be covered by federal and state subsidies. The funding for infrastructure measures amounts to a maximum of 75 percent for the city and local transport.

Naumburger Straße is being completely renewed. In addition to the road construction, the streetcar line is being extended to the Himmelreich residential area. At the same time, footpaths and cycle paths as well as central supply and disposal lines are being renewed. The aim is to secure the infrastructure in the long term and improve the connection between the Himmelreich and Am Oelste residential areas and Jena's streetcar network.

The project partners are the City of Jena, Jena's local public transport system, Stadtwerke Jena Netze, JenaWasser and Kommunalservice Jena.

City of Jena

Planning:

• Ronald Müller
  Mobility Department, Project Manager
  Telephone: 0049 3641 49-5337
  E-mail: ronald.mueller@jena.de
  
• Petra Schmidt
  Mobility Department, Team Leader Planning Traffic Facilities
  Phone: 0049 3641 49-5321
  E-mail: petra.schmidt@jena.de

Municipal service Jena

Execution:

• Oliver Kalbe
  Construction and quality management, project manager
  Phone: 0049 3641 49-89147
  E-mail: oliver.kalbe@jena.de
  
• Steffen Schulz
  Head of Construction and Quality Management
  Phone: 0049 3641 49-89141
  E-mail: steffen.schulz@jena.de

Jena public transport

• Falk Hamann
  Project Manager
  Phone: 0049 3641 414127
  E-mail: falk.hamann@nahverkehr-jena.de

Zweckverband Jena Wasser and Stadtwerke Jena Netze GmbH

• Robert Egler
  Planning/construction management, project manager
  Phone: 0049 3641 688-767
  E-mail: robert.egler@stadtwerke-jena.de