Bundesautobahn 21
A 21 | ||||
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| Bundesautobahn 21 | ||||
| Route information | ||||
| Length | 50 km (31 mi) | |||
| Major junctions | ||||
| North end | Bundesstraße 404 in Klein Barkau, Schleswig-Holstein | |||
| South end | Bundesautobahn 1 in Hammoor, Schleswig-Holstein | |||
| Location | ||||
| Country | Germany | |||
| States | Schleswig-Holstein, Lower Saxony (planned) | |||
| Highway system | ||||
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Bundesautobahn 21 (translates from German as Federal Motorway 21, short form Autobahn 21, abbreviated as BAB 21 or A 21) is an autobahn in Germany.
It runs from an interchange with the A 1 at Bargteheide to Wankendorf, halfway between Bad Segeberg and Kiel. A northbound extension to Kiel and a southbound extension connecting to the A 39 are being planned. The A 21 will cross the extension of the A 20 near Bad Segeberg.
In 2026, the A21 will be completed until Klein Barkau.
The A21 is planned to end at the Barkau Interchange when it's completed.