Jena Construction Site Report for Calendar Week 40 (September 28 through October 4, 2026)

Unless otherwise noted, you can walk or bike past the construction sites.

New Closures / Traffic Disruptions

Ammerbacher Street

• Type: One-way closure
• Location: toward Nennsdorf
• Duration: September 29 through October 2, 2026, from 8:00 a.m. to 3:00 p.m.
• Reason: Tree maintenance
• Details: Traffic will be controlled by traffic lights.

B88 (A4 highway bridge)

• Type: Alternating lane closure
• Duration: September 29, 6:00 p.m., through October 2, 2026, 6:00 a.m.
• Reason: Structural inspection
• Details: One lane will be closed at a time on an alternating basis.

Announcements/Notices

Maua Industrial Park 

• Type: Alternating full closure of the ramps
• Duration: October 5–23, 2026
• Reason: Repair work
• Details: Traffic will be rerouted.

Oßmaritzer Street

• Type: Full closure
• Location: between the intersection with Helene-Weigel-Straße and the intersection with Hanns-Eisler-Straße 
• Duration: October 5–16, 2026
• Reason: Civil engineering work (water main)
• Details: Traffic will be rerouted via Bertolt-Brecht-Straße.

Closures that have ended

At Erlkönig/Robert-Büchler-Weg/Am Ostbad (sidewalk/bike path)

• Tree maintenance work has been completed.

Eichplatz and Rathausgasse parking lots

• The full closure due to the Old Town Festival has ended.

Südbad Parking Lot

• The temporary full closure due to the regional soccer league gamehas ended.

Current closures

August-Bebel-Straße

• Type: Full closure
• Location: From house number 27a to Botzstraße
• Duration: through November 20, 2026
• Reason: major roadwork
• Details: Residents of Wilhelm-Külz-Straße can still access August-Bebel-Straße. A detour is signposted. The “Norma” supermarket is accessible only on foot.

Bernhard-Schultze-Straße

• Type: Full closure
• Duration: through October 2, 2026
• Reason: major road reconstruction including utility and sewer work
• Details: The work will be carried out in two construction phases. A detour will be signposted.
  • Phase 1: Am Steinborn from Löbichauer Street to Bernhard-Schultze Street
  • Phase 2: Am Steinborn to Klopfleischstraße

Burgauer Weg

• Type: One-way closure
• Location: Between Mühlenstraße and the SteinMalEins all-day school
• Duration: until approximately early October 2026
• Reason:Construction of a high-pressure gas pipeline
• Details: The project will be carried out in two construction phases. 
  • Phase 2: (August 17 through early October 2026): In the area between the boathouse of the Jena Rowing and Water Sports Club and the Lichtenhain Bridge. A temporary lane for local traffic will be provided.

Camburger Straße (sidewalk)

• Type: Complete closure of the westbound sidewalk
• Location: From the intersection with Leipziger Straße to across from the garage complex
• Duration: through October 14, 2026 
• Reason: Civil engineering work
• Details: Pedestrianand bicycletrafficwill bererouted via Fritz-Kalisch-Straße.

Carl-Zeiss-Platz

• Type: Full closure
• Location: House numbers 12 through 14
• Duration: through December 31, 2026
• Reason: Renovation and new construction of the German Optical Museum

Dornburger Street

• Type: Various closures
• Location: House number 6
• Duration: through October 31, 2026
• Reason: New construction
• Details: A one-way traffic system is in effect toward the city center. The cordoned-off area is being used for construction site setup and loading/unloading. Traffic heading out of the city is being rerouted via Spitzweidenweg and Nollendorfer Street.

Friedrich-Wolf-Straße / Dornburger Straße

• Type: Full closure
• Duration: through October 16, 2026 
• Reason: Renovation of the railroad crossing
• Details: The railroad crossing can be crossed on foot. The closure can be bypassed via Leipziger Straße and Scharnhorststraße.

Forstweg (bridge)

• Type: Full closure
• Location: between house numbers 12 and 24
• Duration: through December 20, 2026
• Reason: Replacement of the bridge
• Details: The road is accessible from both directions only up to the bridge. Depending on the construction work, additional parking and stopping restrictions may apply. 
  The pedestrian bridge may be crossed from Friday (2:30 p.m.) through Monday (7:00 a.m.).On weekdays, please use the detour via Kochstraße, Magdelstieg, and Hornstraße. 
  All road users are again urged to follow the existing traffic route at all times. There is a significant risk of injury in the construction zone due to the excavation pit.

Fritz-Reuter-Straße

• Type: Full closure
• Duration: through October 21, 2026
• Reason: Reconstruction of drinking water, stormwater, and electrical lines
• Details: The work will be carried out in two construction phases. A detour will be signposted.
  • Phase 1: From Kronfeldstraße to Viktor-von-Scheffel-Weg
  • Phase 2: From Viktor-von-Scheffel-Weg to Tatzendpromenade

Knebelstraße

• Type: Half-lane closure in the direction of Fischergasse
• Location: Near Volksbad
• Duration: through October 31, 2026
• Reason: Construction work at the Gleisdreieck
• Details: Kahlaische Straße remains accessible. Traffic is being rerouted via Grietgasse toward Fischergasse and Löbdergraben. From Grietgasse, drivers can then only turn onto Kahlaische Straße.

Kritzegraben

• Type: Full closure
• Location: Intersection of Kritzegraben, Thomas-Mann-Straße, and Sankt-Jakob-Straße
• Duration: through October 9, 2026
• Reason: Civil engineering work
• Details: Drivers should take a wide detour around the closure.

Lessingstraße

• Type: Full closure
• Location: between Fröbelstieg and Max-Wien-Platz
• Duration: through December 31, 2026
• Reason: Civil engineering work and construction site traffic
• Details: The construction site can be bypassed via Helmholtzweg.

Lützowstraße

• Type: Full closure
• Location: From house number 30 to Wildenbruchstraße 25
• Duration: through October 9, 2026
• Reason: major roadwork

Naumburger Street

• Type: Full closure
• Location: From the outskirts of Jena to the intersection with Carl-Orff-Straße Süd
• Duration: Phase 1 through November 30, 2026
• Reason: Comprehensive infrastructure project (renovation of the road, sidewalks, and bike paths; utility lines; tram line extension)
• Details: The detour is extensive in both directions, starting from Camburg/Rodameuschel via the L1070 to Trotz, and from Trotz on the B7 via Bürgel to Jena. The junction with Carl-Orff-Straße Süd remains open to traffic at all times. 
• More information about the project:jena.de/ausbau-jena-nord 

OBI Tunnel

• Type: Complete closure of the pedestrian/bicycle path
• Location: Camburger Straße to the OBI Tunnel
• Duration: through October 31, 2026
• Reason: Expansion of the pedestrian/bike path
• Details: The detour runs through the Saalbahnhof Tunnel.
  • Another complete closure of the tunnel: October 12 through October 30, 2026; no crossing possible!

Otto-Schott-Straße

•     Type: Full closure
•     Location: From Kronfeldstraße toward Schleidenstraße
•     Duration: through Nov. 20, 2026
•     Reason: District heating expansion
•     Details: The detour runs via Magdelstieg.
  • Construction Phase 2: Viktor-von-Scheffel-Weg to Tatzendpromenade

Paradiesbrücke

• Type: Closures of tracks and sidewalks/bike paths
• Duration: until approx. March 31, 2027
• Reason: Renovation of the tram line
• Details: Pedestrian and bicycle traffic will be rerouted via the adjacent sidewalk on Stadtrodaer Straße. Paradiesbahnhof station is accessible only via the sidewalk on Knebelstraße. The project will be carried out in three construction phases. 
  • Phase 1 (June 29 through October 15, 2026): Closure of the track section from Paradies Bridge up to and including the Paradiesbahnhof stop. Changes to the route maps for Lines 1, 4, and 5.
  • Phase 2 (October 15 through the end of 2026): Closure of the track section between the Paradiesbahnhof stop and the Holzmarkt track junction. This construction phase will result in an interruption of tram service and the division of the network into a northern and a southern section.
  • Construction Phase 3 (Spring 2027): Renovation of the small railroad crossing at the entrance to Paradiesbahnhof—with no restrictions on local transit.
• Current information, detailed network maps, and schedule changes: www.stadtwerke-jena.de/gleisbau-paradies

Saalebrücke in Oberaue

• Type: Temporary full closure
• Duration: September 30, 2027
• Location: Near USV
• Details: A signposted detour for pedestrians and cyclists runs over the Lichtenhainer Bridge. 
  • The bridge will be completely closed from September 28 to October 9, 2026. Additional closures will occur depending on the work to be carried out.

Sankt-Jakob-Straße

• Type: Full closure of the southbound lane
• Location: between Kritzegraben and Spittelplatz
• Duration: through December 31, 2026
• Reason: Major renovation of the area
• Details: The pedestrian and bike path is being rerouted via Philosophenweg toward Sankt-Jakob-Straße. Kritzegraben, Am Planetarium, and Sophienstraße remain fully open to traffic.

Stauffenbergstraße

• Type: Temporary full closures
• Location: Between house numbers 1 and 13 and the adjacent Fritz-Ritter-Straße
• Duration: through October 31, 2026
• Reason: Underground electrical work
• Details:Traffic will be rerouted via the adjacent road network.

Theobald-Renner-Straße

• Type: Partial closure and full closure
• Duration: through October 23, 2026
• Reason: Road resurfacing
• Details: Traffic congestion is expected.
  • Properties and parking spaces remain accessible.
  • The full closure near house number 2 can be bypassed via the loop on Theobold-Renner-Straße.
• Access to the swimming pool and the parking lot is guaranteed.

Thomas-Mann-Straße

• Type: Change in traffic routing
• Location: between Nollendorfer Straße and Hufelandweg
• Duration: through October 30, 2026 
• Reason: Complete road reconstruction
• Details: The removal of the natural stone paving and the installation of a new bituminous surface layer are intended to improve drivability. The construction project is divided into two phases. 
  • Phase 1: House numbers 34 to 23a
  • Phase 2: House numbers 23a to 3 
  • The one-way traffic regulation will be suspended so that properties not located within the construction zone can be accessed. 

Tümplingstraße

• Type: Full closure
• Location: From house number 1 to the intersection with Tautenburger Straße
• Start: September 8, 2026
• Reason: Underground utility work (gas and electricity)
• Details: The detour runs via Charlottenstraße and Schlippenstraße.

Wöllnitz Pedestrian Bridge

• Type: Restrictions and closures
• Location: near Stadtrodaer Straße
• Duration: through October31, 2026
• Reason: Bridge renovation
• Details: The project will be carried out in 5 construction phases. During the 5th phase, the bridge will be closed to pedestrians and cyclists.
  • Phase 5 (June 27 through October 31, 2026): The lanes heading toward the city center will be closed; traffic will be diverted to the opposite direction.