A21 autoroute

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A21 autoroute
Rocade Minière
The A21 near Lens
Route information
Length	57.6 km (35.8 mi)
Existed	1978–present
Major junctions
West end	D 301 in Bully-les-Mines
East end	A 2 in Douchy-les-Mines E19 in Douchy-les-Mines
Location
Country	France
Highway system
Roads in France Autoroutes Routes nationales

The A21 autoroute is a toll free highway in north western France. It is also known as the Rocade Minière. It is 57.6 kilometres (35.8 mi) long.