Bundesautobahn 23
{{Short description|Federal motorway in Germany}}
{{Expand German|topic=transp|date=April 2023}}
{{Infobox road
| country = DEU
| type = A
| route = 23
| map = Bundesautobahn 23 map.png
| length_km = 96
| established =
| decommissioned =
| direction_a = North
| direction_b = South
| terminus_a = 28px B 5 in Heide
| terminus_b = 28px A 7 in Hamburg
| previous_type = A
| previous_route = 21
| next_type = A
| next_route = 24
| states = Schleswig-Holstein, Hamburg
}}
{{BAB intro|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.
Exit list
{{DEUinttop|exit|name}}
{{DEUint|exit|name
|state=Schleswig-Holstein
|sspan=28
|district=Dithmarschen
|dspan=6
|location=Norderwöhrden
|lspan=2
|km=95.9
|exit=—
|name=—
|type=trans
|road={{Jct|country=DEU|B|5|location1=Husum|location2=Tönning}}
|notes=Northern endpoint of motorway
}}
{{DEUint|exit|name
|state=
|sspan=
|district=
|dspan=
|location=
|lspan=
|km=95.0
|exit=2
|name=Heide-West
|type=
|road={{Jct|country=DEU|B|203|location1=Heide|location2=Büsum|location3=Rendsburg|location4=Wesselburen}}
|notes=Rendsburg is only signed southbound
----
Wesselburen is only signed northbound
}}
{{DEUint|exit|name
|state=
|sspan=
|district=
|dspan=
|location=Hemmingstedt
|lspan=1
|km=91.3
|exit=3
|name=Heide-Süd
|type=
|road={{Jct|country=DEU|B|5|location1=Heide|location2=Brunsbüttel|location3=Meldorf|location4=Hemmingstedt}}
|notes=Brunsbüttel and Meldorf are only signed southbound
----
Süd means south
}}
{{DEUint|exit|name
|state=
|sspan=
|district=
|dspan=
|location=Tensbüttel-Röst
|lspan=2
|km=79.3
|exit=Rest area
|name=Dithmarscher Geest
|type=
|road=Dithmarscher Geest rest area
|notes=
}}
{{DEUint|exit|name
|state=
|sspan=
|district=
|dspan=
|location=
|lspan=
|km=76.9
|exit=4
|name=Albersdorf
|type=
|road={{Jct|country=DEU|B|431|location1=Meldorf}}
Albersdorf
|notes=
}}
{{DEUint|exit|name
|state=
|sspan=
|district=
|dspan=
|location=Schafstedt
|lspan=1
|km=71.4
|exit=5
|name=Schafstedt
|type=
|road=Schafstedt, Süderhastedt
|notes=
}}
{{DEUint|exit|name
|state=
|sspan=
|district=Kiel Canal
|dspan=1
|location=Hohenhörn
|lspan=1
|km=69.7
|exit=Bridge
|name=Hochbrücke Hohenhörn
|type=
|road=Kiel Canal
|notes=length: 390.5 m
}}
{{DEUint|exit|name
|state=
|sspan=
|district=Rendsburg-Eckernförde
|dspan=1
|location=Bendorf
|lspan=1
|km=69.1
|exit=Parking area
|name=Nord-Ostsee-Kanal
|type=
|road=Nord-Ostsee-Kanal parking area
|notes=Nord-Ostsee-Kanal is the german word for
Kiel Canal
}}
{{DEUint|exit|name
|state=
|sspan=
|district=Steinburg
|dspan=11
|location=Besdorf
|lspan=1
|km=66.0
|exit=6
|name=Hanerau-Hademarschen
|type=
|road=Hanerau-Hademarschen, Wacken, Besdorf
|notes=Wacken is only signed southbound
}}
{{DEUint|exit|name
|state=
|sspan=
|district=
|dspan=
|location=Agethorst
|lspan=1
|km=60.1
|exit=7
|name=Schenefeld
|type=
|road={{Jct|country=DEU|B|430|location1=Schenefeld|location2=Neumünster}}
Wacken
|notes=Wacken is only signed northbound
----
Neumünster is only signed southbound
}}
{{DEUint|exit|name
|state=
|sspan=
|district=
|dspan=
|location=Kaaks
|lspan=1
|km=56.6
|exit=Rest area
|name=Kaaksburg
|type=
|road=Kaaksburg rest area
|notes=
}}
{{DEUint|exit|name
|state=
|sspan=
|district=
|dspan=
|location=Itzehoe
|lspan=3
|km=51.1
|exit=8
|name=Itzehoe-Nord
|type=
|road=Itzehoe-Nord, Krankenhaus, Innovationszentrum
|notes=Nord means north
----
Krankenhaus means hospital
----
Innovationszentrum means innovation center
}}
{{DEUint|exit|name
|state=
|sspan=
|district=
|dspan=
|location=
|lspan=
|km=48.4
|exit=9
|name=Itzehoe-Mitte
|type=
|road={{Jct|country=DEU|B|5|location1=Brunsbüttel}}
{{Jct|country=DEU|B|206|location1=Itzehoe-Mitte|location2=Lübeck}}
|notes=Mitte means middle
}}
{{DEUint|exit|name
|state=
|sspan=
|district=
|dspan=
|location=
|lspan=
|km=47.4
|exit=Bridge
|name=Störbrücke
|type=
|road=Stör
|notes=length: 1155 m
}}
{{DEUint|exit|name
|state=
|sspan=
|district=
|dspan=
|location=Breitenburg
|lspan=1
|km=43.1
|exit=10
|name=Itzehoe-Süd
|type=
|road=Itzehoe-Süd
|notes=Süd means south
}}
{{DEUint|exit|name
|state=
|sspan=
|district=
|dspan=
|location=Lägerdorf
|lspan=1
|km=39.0
|exit=11
|name=Lägerdorf
|type=
|notes=
}}
{{DEUint|exit|name
|state=
|sspan=
|district=
|dspan=
|location_special=Hohenfelde
|lspan=1
|km=34.7
|exit=12
|name=Hohenfelde
|type=
|road=Hohenfelde, Wrist, Krempe, Glückstadt, Elbefähre
|notes=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
}}
{{DEUint|exit|name
|state=
|sspan=
|district=
|dspan=
|location_special=Horst
|lspan=2
|km=
|exit=—
|name=Hohenfelde interchange
|type=proposed
|road={{Jct|country=DEU|A|20|location1=Bremerhaven|location2=Lübeck}}
|notes=interchange planned
}}
{{DEUint|exit|name
|state=
|sspan=
|district=
|dspan=
|location=
|lspan=
|km=32.2
|exit=Rest area
|name=Steinburg
|type=
|road=Steinburg rest area
|notes=Restaurant and gas station planned
}}
{{DEUint|exit|name
|state=
|sspan=
|district=Pinneberg (district)
|dspan=9
|location=Klein Offenseth-Sparrieshoop
|lspan=1
|km=28.4
|exit=13
|type=
|road=Horst/Elmshorn, Barmstedt
|notes=Barmstedt is only signed southbound
}}
{{DEUint|exit|name
|state=
|sspan=
|district=
|dspan=
|location=Elmshorn
|lspan=1
|km=20.7
|exit=14
|name=Elmshorn
|type=
|road={{Jct|country=DEU|B|431|location1=Elmshorn}}
|notes=
}}
{{DEUint|exit|name
|state=
|sspan=
|district=
|dspan=
|location=Tornesch
|lspan=2
|km=16.5
|exit=15
|name=Tornesch
|type=
|road=Tornesch, Uetersen, Barmstedt
|notes=Barmstedt is only signed northbound
}}
{{DEUint|exit|name
|state=
|sspan=
|district=
|dspan=
|location=
|lspan=
|km=14.8
|exit=Rest area
|name=Forst Rantzau
|type=
|road=Forst Rantzau rest area
|notes=
}}
{{DEUint|exit|name
|state=
|sspan=
|district=
|dspan=
|location=Pinneberg
|lspan=1
|km=11.3
|exit=16
|name=Pinneberg-Nord
|type=
|road=Pinneberg-Nord, Quickborn, Kummerfeld
|notes=Nord means north
}}
{{DEUint|exit|name
|state=
|sspan=
|district=
|dspan=
|location=Rellingen
|lspan=1
|km=8.3
|exit=17
|name=Pinneberg-Mitte
|type=
|road=Pinneberg-Mitte, Rellingen-Nord
|notes=Entrance equipped with Ramp meter
----
Nord means north
----
Mitte means middle
}}
{{DEUint|exit|name
|state=
|sspan=
|district=
|dspan=
|location=Pinneberg
|lspan=1
|km=7.5
|exit=18
|name=Pinneberg-Süd
|type=
|notes=Süd means south
}}
{{DEUint|exit|name
|state=
|sspan=
|district=
|dspan=
|location=Halstenbek
|lspan=2
|km=6.2
|exit=19
|name=Halstenbek/Rellingen
|type=
|road=Halstenbek, Rellingen, Schenefeld, Pinneberg-Waldenau
|notes=Entrance equipped with Ramp meter
}}
{{DEUint|exit|name
|state=
|sspan=
|district=
|dspan=
|location=
|lspan=
|km=3.7
|exit=20
|name=Halstenbek-Krupunder
|type=
|road=Halstenbek-Krupunder, Rellingen-Süd
|notes=Entrance equipped with Ramp meter
----
Süd means south
}}
{{DEUint|exit|name
|state=Hamburg
|sspan=2
|district=Eimsbüttel
|dspan=2
|location=Eidelstedt
|lspan=2
|km=1.2
|exit=21
|name=Hamburg-Eidelstedt
|type=
|road={{Jct|country=DEU|A|7|E|45|location1=Flensburg|location2=Kiel|location3=Hamburg Airport}}
{{Jct|country=DEU|B|4|location1=Hamburg-Eidelstedt}}
|notes=All destinations of A 7 motorway are only signed southbound
}}
{{DEUint|exit|name
|state=
|sspan=
|district=
|dspan=
|location=
|lspan=
|km=0.0
|exit=22
|name=Hamburg-Nordwest interchange
|type=incomplete
|road={{Jct|country=DEU|A|7|E|45|location1=Hannover|location2=Bremen|location3=Hamburg-Stellingen}}
|notes=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
}}
{{jctbtm|col=9|keys=incomplete,proposed,trans|exit|name}}