A 23
Bundesautobahn 23
Route information
Length	96 km (60 mi)
Major junctions
North end	B 5 in Heide
South end	A 7 in Hamburg
Location
Country	Germany
States	Schleswig-Holstein, Hamburg
Highway system
Roads in Germany Autobahns List Federal List State E-roads
← A 21 → A 24

Bundesautobahn 23 (translates from German as Federal Motorway 23, short form Autobahn 23, abbreviated as BAB 23 or A 23) is an autobahn in Germany. It runs largely parallel to the Bundesstraße 5; its main purpose is to connect the hinterland of Hamburg. North of Heide, the A 23 becomes B 5 and connects Eiderstedt, Husum and the ferries to the islands of Nordfriesland to the autobahn network.

State	District	Location	km	mi	Exit	Name	Destinations	Notes
Schleswig-Holstein	Dithmarschen	Norderwöhrden	95.9	59.6	—	—	B 5 – Husum, Tönning	Northern endpoint of motorway
			95.0	59.0	2	Heide-West	B 203 – Heide, Büsum, Rendsburg, Wesselburen	Rendsburg is only signed southbound Wesselburen is only signed northbound
		Hemmingstedt	91.3	56.7	3	Heide-Süd	B 5 – Heide, Brunsbüttel, Meldorf, Hemmingstedt	Brunsbüttel and Meldorf are only signed southbound Süd means south
		Tensbüttel-Röst	79.3	49.3	Rest area	Dithmarscher Geest	Dithmarscher Geest rest area
			76.9	47.8	4	Albersdorf	B 431 – Meldorf Albersdorf
		Schafstedt	71.4	44.4	5	Schafstedt	Schafstedt, Süderhastedt
	Kiel Canal	Hohenhörn	69.7	43.3	Bridge	Hochbrücke Hohenhörn	Kiel Canal	length: 390.5 m
	Rendsburg-Eckernförde	Bendorf	69.1	42.9	Parking area	Nord-Ostsee-Kanal	Nord-Ostsee-Kanal parking area	Nord-Ostsee-Kanal is the german word for Kiel Canal
	Steinburg	Besdorf	66.0	41.0	6	Hanerau-Hademarschen	Hanerau-Hademarschen, Wacken, Besdorf	Wacken is only signed southbound
		Agethorst	60.1	37.3	7	Schenefeld	B 430 – Schenefeld, Neumünster Wacken	Wacken is only signed northbound Neumünster is only signed southbound
		Kaaks	56.6	35.2	Rest area	Kaaksburg	Kaaksburg rest area
		Itzehoe	51.1	31.8	8	Itzehoe-Nord	Itzehoe-Nord, Krankenhaus, Innovationszentrum	Nord means north Krankenhaus means hospital Innovationszentrum means innovation center
			48.4	30.1	9	Itzehoe-Mitte	B 5 – Brunsbüttel B 206 – Itzehoe-Mitte, Lübeck	Mitte means middle
			47.4	29.5	Bridge	Störbrücke	Stör	length: 1155 m
		Breitenburg	43.1	26.8	10	Itzehoe-Süd	Itzehoe-Süd	Süd means south
		Lägerdorf	39.0	24.2	11	Lägerdorf	Lägerdorf, Rethwisch
		Hohenfelde	34.7	21.6	12	Hohenfelde	Hohenfelde, Wrist, Krempe, Glückstadt, Elbefähre	Krempe is only signed northbound Grückstadt and the ferry at Glückstadt are only signed southbound Elbefähre is a ferry which crosses the Elbe river between Glückstadt and Wischhafen
		Horst			—	Hohenfelde interchange	A 20 – Bremerhaven, Lübeck	interchange planned
			32.2	20.0	Rest area	Steinburg	Steinburg rest area	Restaurant and gas station planned
	Pinneberg (district)	Klein Offenseth-Sparrieshoop	28.4	17.6	13	Horst/Elmshorn	Horst/Elmshorn, Barmstedt	Barmstedt is only signed southbound
		Elmshorn	20.7	12.9	14	Elmshorn	B 431 – Elmshorn
		Tornesch	16.5	10.3	15	Tornesch	Tornesch, Uetersen, Barmstedt	Barmstedt is only signed northbound
			14.8	9.2	Rest area	Forst Rantzau	Forst Rantzau rest area
		Pinneberg	11.3	7.0	16	Pinneberg-Nord	Pinneberg-Nord, Quickborn, Kummerfeld	Nord means north
		Rellingen	8.3	5.2	17	Pinneberg-Mitte	Pinneberg-Mitte, Rellingen-Nord	Entrance equipped with Ramp meter Nord means north Mitte means middle
		Pinneberg	7.5	4.7	18	Pinneberg-Süd	Pinneberg-Süd, Wedel	Süd means south
		Halstenbek	6.2	3.9	19	Halstenbek/Rellingen	Halstenbek, Rellingen, Schenefeld, Pinneberg-Waldenau	Entrance equipped with Ramp meter
			3.7	2.3	20	Halstenbek-Krupunder	Halstenbek-Krupunder, Rellingen-Süd	Entrance equipped with Ramp meter Süd means south
Hamburg	Eimsbüttel	Eidelstedt	1.2	0.75	21	Hamburg-Eidelstedt	A 7 / E45 – Flensburg, Kiel, Hamburg Airport B 4 – Hamburg-Eidelstedt	All destinations of A 7 motorway are only signed southbound
			0.0	0.0	22	Hamburg-Nordwest interchange	A 7 / E45 – Hannover, Bremen, Hamburg-Stellingen	incomplete junction: exit ramp: Heide → Flensburg/Kiel has an At-grade intersection directly connected to the previous exit Southern endpoint of motorway Nordwest means north-west
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Incomplete access       Proposed       Route transition

• Bundesautobahn 23 – detailed route plan (in German)