The M4 (the Harbour Line) of the

Copenhagen Metro The Copenhagen Metro ( da, Københavns Metro, ) is a 24/7 rapid transit system in Copenhagen, Denmark, serving the municipalities of Copenhagen, Frederiksberg, and Tårnby. The original system opened in October 2002, serving nine stations on t ...

connects Nordhavn in the north with Sydhavn in the south. The central part of the line shares tracks with the

City Circle Line The City Circle Line ( da, Cityringen) or M3 is a loop line of the Copenhagen Metro. It has been claimed by COWI A/S that the City Circle Line is the largest construction project to have taken place in Copenhagen during the last 400 years.

(M3). The Nordhavn branch was approved by the

Danish Parliament The Folketing ( da, Folketinget, ; ), also known as the Parliament of Denmark or the Danish Parliament in English, is the unicameral national legislature (parliament) of the Kingdom of Denmark—Denmark proper together with the Faroe Islands an ...

in 2012 and was opened on 28 March 2020. The Sydhavn branch was approved in 2015 and is expected to open in 2024. Both Nordhavn and Sydhavn are former industrial areas situated at opposite ends of the

Port of Copenhagen The Port of Copenhagen ( da, Københavns Havn) is the largest Danish seaport and one of the largest ports in the Baltic Sea basin. It extends from Svanemølle Beach in the north to Hvidovre in the south. Along with Malmö harbour, Copenhagen Por ...

and currently undergoing

urban renewal Urban renewal (also called urban regeneration in the United Kingdom and urban redevelopment in the United States) is a program of land redevelopment often used to address urban decay in cities. Urban renewal involves the clearing out of blighte ...

under the auspices of

By & Havn By & Havn (English: ''City & Port'') or ''Udviklingsselskabet By & Havn I/S'' (en.: ''The corporation for development of City and Port I/S'') is an organisation, tasked with the development of Ørestad and the port of Copenhagen and the daily ope ...

. When the

was planned, the M4 was intended to supplement the M3 from Nørrebro to

København H Copenhagen Central Station ( da, Københavns Hovedbanegård , abbreviated ''København H'') is the main railway station in Copenhagen, Denmark, and the largest railway station in Denmark. With more than 100,000 travellers every day, it is the se ...

providing increased metro capacity to the eastern section of the

inner city The term ''inner city'' has been used, especially in the United States, as a euphemism for majority-minority lower-income residential districts that often refer to rundown neighborhoods, in a downtown or city centre area. Sociologists some ...

. At this time, it was presumed that the M4 would eventually be expanded from Nørrebro to the northwestern suburbs, but this plan was abandoned in 2009, when the city of Copenhagen scrapped plans for an interchange facility under Nørrebro station. Instead, the city preferred a solution where the M4 would connect the Nordhavn and Sydhavn districts.

Stations and route

The M4 Line serves 8 stations. From

to Østerport the line is shared with M3.

Stations

Nordhavn section (2020) * Orientkaj * Nordhavn (interchange with S-trains) Stations shared with the M3 (2020) * Østerport (interchange with S-trains and DSB) * Marmorkirken (The Marble Church) *

Kongens Nytorv Kongens Nytorv ( lit. "The King's New Square") is a public square in Copenhagen, Denmark, centrally located at the end of the pedestrian street Strøget. The largest square of the city, it was laid out by Christian V in 1670 in connection wit ...

(interchange with all other metro lines) *

Gammel Strand Gammel Strand (modern Danish for "old beach"; originally meant "the old shoreline", i.e. prior to land reclamations) is a street and public square in central Copenhagen, Denmark. On the south side it borders on the narrow Slotsholmens Canal whi ...

near Christiansborg Palace *

Rådhuspladsen City Hall Square ( da, Rådhuspladsen, ) is a public square in the centre of Copenhagen, Denmark, located in front of the Copenhagen City Hall. Its large size, central location, and affiliation with the city hall makes it a popular venue for a ...

( City Hall Square) *

(Copenhagen Central Station, interchange with S-trains and

DSB DSB may refer to: Science, technology and devices * DsbA, a bacterial member of the Dsb (disulfide bond) family of enzymes * Double strand break, a break in both DNA strands, part of DNA repair * in telecommunications, double-sideband transmission ...

.) Sydhavn section (2024) *

Havneholmen Havneholmen (literally "The Harbour Isle") is a mixed-use development located on reclaimed land off Kalvebod Brygge in the harbor of Copenhagen, Denmark. It is located just east of the shopping centre Fisketorvet from which it is separated by a na ...

Enghave Brygge Enghave Brygge (English: Enghave Quay) is a waterfront area in the Southern Docklands of Copenhagen, Denmark. It is located between Teglholmen to the south and Kalvebod Brygge to the north. Currently an abandoned industrial site, a plan for its r ...

Sluseholmen Sluseholmen (literally "The Sluice Isle") is an artificial peninsula in the South Harbour of Copenhagen, Denmark. It takes its name from Slusen, a lock immediately to the south, regulating water levels in the harbor. Previously the site of heavy ...

* Mozarts Plads * København Syd (until 2024 named Ny Ellebjerg, interchange with S-trains and DSB) In April 2017 it was announced that the five Sydhavn stations would feature artwork from five Danish artists: Superflex, Pernille With Madsen, René Schmidt, Christian Schmidt-Rasmussen, Henrik Plenge Jakobsen.

Possible future extensions

An extension in Nordhavn with 3 additional stations have been proposed, with the possibility of extending the line even further towards

Hellerup Station Hellerup station is a regional and S-train railway station]serving the district of Hellerup in Copenhagen, Denmark. It is served by regional trains on the Coast Branch, as well as S-trains. History The station was designed by V.C.H. Wolf and o ...

. Two possible extensions from Ny Ellebjerg Station in Sydhavnen are being looked into. One towards Hvidovre and one towards Bispebjerg. To enable such future extensions from the current M4 terminus, Ny Ellebjerg, it was decided in 2016 that the station would be built as an underground station instead of overground as previously decided.

References

{{Copenhagen Metro M4 (Copenhagen Metro), Railway lines opened in 2020 2020 establishments in Denmark Port of Copenhagen