which as A 255 connects it to the Hamburg city center via Elbbrücken bridges. At the same time, the only 1.5 km long A 252 branches off into the Hamburg harbor area. After the crossing, the main carriageway of the A 1 continues back south, crosses the Süderelbe at Hamburg-Harburg and, already in Lower Saxony, crosses the A 39 to Lüneburg at Maschener Kreuz. At the following Horster Dreieck the main carriageway of the A 1 changes again, the continuous relation forms the A 7 to Hannover, while the A 1 continues with four lanes to the west. Only from the Buchholz Triangle, which ties the A 261 as a connection to the A 7 in the direction of Flensburg, there are again six lanes. Lower Saxony and Bremen Before Bremen, once it crosses through the largely flat and sparsely populated land and is consistently six lanes. At the Bremer Kreuz, which lies however on Lower Saxon territory, the A 27 (Cuxhaven Walsrode) is crossed. The A 1 now connects the southern parts of Bremen. Only a few kilometers of the route are actually in the area of the Free Hanseatic City of Bremen, where the Weser is crossed. Behind Bremen, at the Dreieck Stuhr junction near Delmenhorst, the A28 branches off towards Oldenburg. It also serves as a fast route to the northern Netherlands. Until the triangle Ahlhorner Heide, where the A 29 from the direction of Wilhelmshaven joins, the A 1 four-lane and the nature park Wildeshauser Geest is passed through. Then it goes - partly six-, partly four-lane - back south towards Osnabrück. At Neuenkirchen-Vörden the first foothills of the low mountain ranges are passed through with the Dammer mountains. At Bramsche then follows the crossing of the Wiehengebirge and Osnabrück is bypassed to the northwest. After crossing the Osnabrück branch canal, the state border with North Rhine-Westphalia is crossed three times before the A 30 (Netherlands-Bad Oeynhausen) is crossed at the Lotte / Osnabrück cross. North Rhine-Westphalia The southern part, where it crosses through the Teutoburg Forest in the Tecklenburg country requires unusually steep gradients and gradients. From Lengerich, the landscape becomes flatter again and a few miles later it merges into Münsterland. Münster / Osnabrück Airport is located directly on the A 1 and has its own connection point since 2010. After the six-lane bypass of Münster, the A 43 branches off at the Münster-Süd