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|} The Cologne Beltway (German:''Kölner Autobahnring'') is the collective term for the Autobahns encircling Cologne. It consists of the Bundesautobahn 3, the Bundesautobahn 4 and the Bundesautobahn 1. The beltway handles one of the highest traffic volumes in Germany. The Autobahns on the beltway cross Bundesautobahn 559, Bundesautobahn 555 and Bundesautobahn 57. The Bundesautobahn 59 is tied to the beltway at the interchange Leverkusen-West in the north and to ''Dreieck'' Heumar in the south. == History == The beltway was constructed in a clockwise fashion beginning at Leverkusen. In 1936 the section between Leverkusen and Cologne-Mülheim was built as a component of the Autobahn Oberhausen-Wiesbaden and in 1937 the section to Siegburg was finished. Thus today's ''Ostring'' (East-Ring) was drivable at that time. In 1941, the ''Rodenkirchener Autobahnbrücke'' was completed and the connection between the A 3 and the Autobahn to Bonn (today A 555) was established. From 1957 to 1960 the Autobahn Cologne-Aachen was finished and the section from ''Kreuz Köln-Süd'' to the later ''Kreuz Köln-West'' was put into service in 1958. Construction of a second ''Autobahn''-bridge across the Rhine in the north of Cologne began in 1961. At its completion, the beltway could be used along its entire length. In 1971, the A 1 was extended to the south beyond the ''Köln-West'' interchange and in 1974 the A 4 was connected to the A 3 from the east at the ''Köln-Ost'' interchange. Since then, the section between interchanges ''Kreuz Köln-Ost'' and ''Dreieck Heumar'' consists of two Autobahns, the A 3 and the A 4. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Cologne Beltway」の詳細全文を読む スポンサード リンク
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