Lambertseter Line

Lambertseter Line
Overview
Native nameLambertseterbanen
OwnerSporveien
Termini
Stations11
Service
TypeRapid transit
SystemOslo Metro
Operator(s)Sporveien T-banen
Depot(s)Ryen
Rolling stockMX3000
History
Opened28 April 1957
Technical
Line length8.4 km (5.2 mi)
Number of tracksDouble
Track gauge1,435 mm (4 ft 8+12 in) standard gauge
Electrification750 V DC third rail
Operating speed70 km/h (43 mph)
Highest elevation165.5 m (543 ft)
Route map

10.5 km
Bergkrystallen
1966
160.0 m
10.0 km
Munkelia
1966
9.5 km
Lambertseter
1966
155.0 m
8.6 km
Karlsrud
1966
7.8 km
Brattlikollen
1966
165.5 m
Ryen Depot
6.7 km
Ryen
1966
124.0 m
6.2 km
Manglerud
1966
130.6 m
5.2 km
Høyenhall
1966
Trunk Line (ca. 50 m)
4.6 km
Brynseng
1966
84.6 m
Østensjø Line
Etterstad Depot
Østre gravlund
1923
3.8 km
Helsfyr
1966
73.7 m
Etterstad
Etterstad
3.0 km
Ensjø
1966
Gjøvik Line (ca. 15 m)
2.1 km
Tøyen
1966
22.2 m

The Lambertseter Line (Norwegian: Lambertseterbanen) is a 5.9-kilometer (3.7 mi) line on the Oslo Metro which runs from Brynseng to Bergkrystallen. It further shares track with the Østensjø Line along the 2.5-kilometer (1.6 mi) section from Tøyen to Brynseng. The line runs through a primary residential area of Nordstrand, serving neighborhoods such as Manglerud, Ryen and Lambertseter. The line is served by Line 4 of the metro, which runs every fifteen minutes. This is supplemented by Line 1 that is extended to Bergkrystallen between 6:30 and 19 on weekdays, giving a combined frequency of eight trains per hour.

Originally the Lambertseter Line was proposed as an extension of the now closed Simensbråten Line. Planning of a metro started in 1946 and instead of running via Ekeberg the Lambertseter Line was to run via Etterstad. Construction was tied with large-scale construction of housing along the route. As the Lambertseter Line could be completed much earlier than the metro's Common Tunnel, the Lambertseter Line was first built as part of the Oslo Tramway. Plans were approved in 1954 and the line opened on 28 April 1957. Until 17 May 1966 it was operated by Oslo Sporveier's SM53 trams and connected to the city center via the Vålerenga Line. From 22 May it became the first part of the Oslo Metro. The metro's main depot, Ryen Depot, is situated along the line. The Lambertseter Line received a major overhaul between 2010 and 2013.