Cologne Beltway
motorway ring road in Germany
The Cologne Beltway (German:Kölner Autobahnring) is the collective term for the Autobahns encircling Cologne. It consists of the Bundesautobahn 1, the Bundesautobahn 3 and the Bundesautobahn 4. Segments of the beltway handle the highest traffic volume 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.
Begin with the source’s own compact description: “Cologne Beltway” is motorway ring road in Germany. The dossier treats that line as a proposition to test through Cologne, Beltway and motorway, not as a finished interpretation.
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The phrase “motorway ring road in Germany” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Mar 2, 2026. The linked authority identifier is Q314884. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1936, 1937, 1941 and 1957.
The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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This entry incorporates text from “Cologne Beltway” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.