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A21 autoroute
1
The A21 autoroute is a toll free highway in north western France. It is also known as the Rocade Minière. It is 57.6 km long.
Junctions
Completed
In construction
Upgrade of N455 between Flers-en-Escrebieux and Pecquencourt which is the northern by-pass Douai.
Proposed
Upgrade of the N455 between Pecquencourt and Douchy-les-Mines and the A2.
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