Overview

• The U3 line is closed between Schlump and Kellinghusenstraße from April 28 to May 8 for critical track renewal work.
• Replacement bus services are in place for the U3 closure, adding up to 20 minutes to travel times on this busy route.
• The U2 line has resumed continuous service between the city center and Mümmelmannsberg following two years of intermittent closures.
• Construction on the U2 included new tunnels and a crossing structure at Horner Rennbahn, preparing for the U4 extension.
• The U4 line is planned to extend to Horner Geest by the end of 2027, further modernizing Hamburg’s transit network.