  Bolshaya Koltsevaya line | |||
|---|---|---|---|
.svg) Geographic map showing the approximate path of the Bolshaya Koltsevaya line (in teal) in the whole Moscow Metro network (in dark grey) including Central Circle and Monorail | |||
| Overview | |||
| Other name(s) | Large Circle Line | ||
| Native name | Большая Кольцевая линия | ||
| Locale | Moscow | ||
| Stations | 31 | ||
| Service | |||
| Type | Rapid transit | ||
| System | Moscow Metro | ||
| Operator(s) | Moskovsky Metropoliten | ||
| Rolling stock | 81-775/776/777 | ||
| History | |||
| Opened | 11 August 1969 (Kakhovskaya line stations) 26 February 2018 (Bolshaya Koltsevaya stations) 1 March 2023 (circle completed) | ||
| Technical | |||
| Line length | 62.5 km (38.8 mi) (including branch) 57.538 km (35.752 mi)[1][2] (circle only) | ||
| Character | Underground | ||
| Track gauge | 1,520 mm (4 ft 11+27⁄32 in) | ||
| Electrification | Third rail | ||
| |||
The Bolshaya Koltsevaya line (Russian: Большая кольцевая линия), known in English as the Big Circle Line,[3] designated Line 11 and 11A[4] is a rapid transit line of the Moscow Metro. It is the third circle line on the system, running outside of the existing circle Koltsevaya line and interlocking with Moscow Central Circle.
The first section of the line opened on 26 February 2018 with the remaining stations opened on 1 March 2023. The line includes 31 stations including three from the former Kakhovskaya line and is over 62 km (39 mi) long including a branch to Moscow International Business Center that is a part of future Rublyovo-Arkhangelskaya line. The circle line itself is 57.5 km (35.7 mi) long, which makes it the longest metro circle line in the world, surpassing Line 10 of Beijing Subway by 514 m (1,686 ft).[5] In November 2017 the city estimated the total cost of the project at 501 billion rubles, up from earlier estimates of 378.9 billion rubles.[6]
Formerly known as the Third Interchange Contour, the city adopted "Bolshaya koltsevaya liniya" as the official name of the line after a vote via the "Active Citizen" web portal.[7]
