Bolshaya Koltsevaya line
| Bolshaya Koltsevaya line | |||
|---|---|---|---|
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, MCD and Monorail | |||
| Overview | |||
| Other name(s) | Large Circle Line | ||
| Native name | Большая Кольцевая линия | ||
| Locale | Moscow | ||
| Stations | 29 | ||
| 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 | 57.538 km (35.752 mi) | ||
| Character | Underground | ||
| Track gauge | 1,520 mm (4 ft 11+27⁄32 in) | ||
| Electrification | Third rail | ||
| |||
.svg){kind=link}
The Bolshaya Koltsevaya line (Russian: Большая кольцевая линия) (English: Big Circle Line) (Line 11; Teal Line) is a rapid transit line of the Moscow Metro system in Moscow, Russia. It is the third circle line on the system, running outside of the existing circle Koltsevaya line and interlocking with the Moscow Central Circle.
The first section of the line opened on 26 February 2018, with the remaining stations opening on 1 March 2023. The line includes 29 stations, including three from the former Kakhovskaya line, and 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). 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.
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.