Bundesautobahn 21

A21
Bundesautobahn 21

Route information
Length:	50 km (30 mi)
Location
States:	Schleswig-Holstein, Lower Saxony (planned)
Highway system
Roads in Germany Motorways (Autobahnen) Federal Highways (Bundesstraßen) E-roads

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 250 are being planned. The A 21 will cross the extension of the A 20 near Bad Segeberg.

Exit list

		Kreuz Kiel-Barkauer Kreuz (planned)
		Molfsee (planned)
		Staßenbrücke 50 m (planned)
		Bahnbrücke 110 m (planned)
		Kiel-Neumeimersdorf (planned)
		Kiel-Wellseedmm (planned)
		Kiel-Edisonstraße (planned)
		Boksee (planned)
		Klein Barkau (planned)
		Bothkamper See (planned)
		Nettelsee (under construction)
		Rest area Holsteinische Schweiz (planned)
		Wildtierdurchlass Depenauer Moor 50 m
		Rest area Depenauer Moor
	(7)	Wankendorf
		Straßenbrücke 130 m
	(8)	Bornhöved
	(9)	Trappenkamp
	(10)	Daldorf
		Grünbrücke 50 m
	(11a)	Wahlstedt
	(11b)	Schackendorf
		Services / Motel Schackendorf
	(12)	Bad Segeberg-Nord
		3-way interchange Bad Segeberg
	(13)	Bad Segeberg-Süd
		Straßenbrücke 90 m
	(13)	Bad Segeberg-Süd
	(14)	Schwissel
		Rest area Bebenseer Moor/Schwissler Kamp
	(15)	Leezen (Holstein)
	(16)	Bad Oldesloe-Nord
	(17)	Bad Oldesloe-Süd
		Beste
	(-)	Rümpel
	(18)	Tremsbüttel
		Rest area Rehbrook
	(19)	Bargteheide 4-way interchange
		Straßenbrücke 70 m (planned)
		Straßenbrücke 50 m (planned)
		Todendorf (planned)
		Steinburg (planned)
		Wolfsbrook (planned)
		Sprenge (planned)
		Finkhorster Berg (planned)
		Lütjensee-Nord (planned)
		Lütjensee-Süd (planned)
		Trittau (planned)
		Kuddewörde (planned)
		Kreuz Schwarzenbeck/Grande (planned)
		Havekost (planned)
		Brunstorf (planned)
		Worth (planned)
		Kreuz Geesthacht (planned)
		Geesthacht-Süd (planned)
		Schleusenbrücke (planned)
		Elbebrücke (planned)
		Marschacht-Rönne (planned)
		Marschacht-Eichholz (planned)
		Ilau-Schneegraben 100 m (planned)
		Ilmenaubrücke 130 m (planned)
		Handorf (planned)
		Kreuz Handorf (planned)
		Mechtersen (planned)
		Salzhausen (planned)
		3-way interchange Egestorf (planned)

External links

Bundesautobahn 21 – Detailed route plan (German)

Autobahn system in Germany

Major routes	A 1 A 2 A 3 A 4 A 5 A 6 A 7 A 8 A 9

Regional routes	A 10 A 11 A 12 A 13 A 14 A 15 A 17 A 19 A 20 A 21 A 23 A 24 A 25 A 26 A 27 A 28 A 29 A 30 A 31 A 33 A 37 A 38 A 39 A 40 A 42 A 43 A 44 A 45 A 46 A 48 A 49 A 52 A 57 A 59 A 60 A 61 A 62 A 63 A 64 A 65 A 66 A 67 A 70 A 71 A 72 A 73 A 81 A 92 A 93 A 94 A 95 A 96 A 98 A 99

Local routes	A 100 A 103 A 111 A 113 A 114 A 115 A 117 A 143 A 210 A 215 A 226 A 252 A 253 A 255 A 261 A 270 A 280 A 281 A 293 A 352 A 391 A 392 A 395 A 445 A 480 A 485 A 516 A 524 A 535 A 540 A 542 A 544 A 553 A 555 A 559 A 560 A 562 A 565 A 571 A 573 A 602 A 620 A 623 A 643 A 648 A 650 A 656 A 659 A 661 A 671 A 672 A 831 A 861 A 864 A 952 A 980 A 995

Planned or former routes	A 16 A 17* A 18 A 22 A 32 A 34 A 35 A 36 A 40* A 41 A 47 A 50 A 51 A 53 A 54 A 55 A 56 A 69 A 74 A 75 A 77 A 80 A 82 A 83 A 84 A 85 A 86 A 87 A 88 A 89 A 90 A 91 A 102 A 104 A 105 A 106 A 107 A 140 A 201 A 205 A 227 A 241 A 250 A 263 A 282 A 290 A 314 A 339 A 369 A 376 A 388 A 430 A 432 A 441 A 441* A 443 A 451 A 480* A 533 A 545 A 552 A 558 A 580 A 610 A 621 A 647 A 652 A 653 A 654 A 655 A 680 A 683 A 687 A 713 A 720 A 722 A 731 A 751 A 752 A 753 A 828 A 833 A 834 A 840 A 860 A 862 A 863 A 863* A 881 A 895 A 921 A 922 A 942 A 944 A 985 A 990 A 991 A 992 A 993 A 994 A 996 A 997 A 998 A 999

See also	Reichsautobahn (history) Autobahnpolizei

* original plan: number is used by another route now

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