Kamener Kreuz
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The Kamener Kreuz is a cloverleaf interchange between the town of Kamen and the city of Dortmund in Germany where the Autobahns A1 and A2 meet. It was the first interchange between the first two Reichsautobahns, and the first operational cloverleaf interchange in Europe, opened in 1937.
It is used by 160000 vehicles per day.
The Kamener Kreuz is currently being renovated and upgraded to three lanes per direction, this requires the demolition of the old A2 bridge and the construction of a new one.