These are Schleswig-Holstein's largest construction sites - Schleswig-Holstein braces for record roadworks with €500M transport overhaul
Schleswig-Holstein is preparing for a busy year of roadworks. The state will invest around half a billion euros in upgrading highways and cycling routes. More construction zones than usual are expected between the North and Baltic Seas.
Seven major highway projects will dominate this year's schedule. Work on the southern bypass of Bad Segeberg starts this spring, featuring two large bridges and 13 ecological structures. Meanwhile, the B404 expansion to a four-lane route linking the A21 is nearing completion, with a 7.9-kilometre section set to open in spring.
The A1 toward Lübeck will undergo a year-long reconstruction from April. Traffic will be cut to two lanes northbound and one lane southbound between Ratekau and the Pansdorf exit. On the A215, resurfacing between Kiel-West interchange and Kiel-Mitte exit runs from April to October, requiring lane and exit closures in both directions.
From May, the A23 will see asphalt renewal between Halstenbek-Krupunder and Halstenbek/Rellingen. Traffic will narrow to two lanes, with full exit closures at times. A five-kilometre stretch of the A21 south of Leezen exit to Bad Oldesloe-Nord will also be overhauled until November, leaving just one lane open in each direction.
Transport Minister Claus Ruhe Madsen has urged road users to plan ahead. Detours and delays are inevitable as these extensive upgrades take shape.
The projects will bring significant changes to travel routes across the region. With federal funding supporting the works, the improvements aim to modernise key transport links. Drivers are advised to check updates and allow extra time for journeys.
