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A geographically accurate map of the route of the line

Serpukhovsko–Timiryazevskaya Line (Russian: Серпуховско-Тимиря́зевская ли́ния) is a line of the Moscow Metro. Originally opened in 1983, it was extended throughout the 1980s and early 90s and again in the early 2000s. With its current length of 41.5 km, it is the second longest line in the Moscow Metro (all underground making it the world's 2nd longest rapid transit tunnel). It has 25 stations.

[edit] History

The project of a north-south diameter was finalised in the 1971 Moscow General Development Plan, and construction began in the mid 1970s. The first stage, the southern Serpukhovsky radius, was opened in 1983 which brought the Metro to the southern districts of Danilovsky, Nagorny, Ziuzino and Chertanovo. Beginning at Serpukhovskaya square the radius follows the Varshava avenue, twice contacts the Paveletsky railway direction, afterwards it deviates slightly westwards passing Azovskaya street, where it met the then terminus of the Gorkovsko-Zamoskvoretskaya Line—Kakhosvkaya. Afterwards the line crosses back across northern Chertanovo's main intersection (Balaklavsky avenue and Sevastopolsky Bulvar).

Some of the new technical methods employed in the construction of this section, included passing from deep alignment to shallow in water-carrying soils. A new technique of contour freezing was employed, which then used explosives to bore through the unstable region. The stretch between Serpukhovskaya and Tulskaya was further made difficult due gasoline leaks from an above petrol station over the years sufficiently absorbed by the soil such that the high concentration of fumes caused a fire in the unfinished tunnel, this introduced a new practice of adding additional boreholes in areas of difficult ventilation.

In November 1985 the line had its first extension southwards to Prazhskaya. This station was designed by Czechoslovak engineers and specialists from the Prague Metro. Simultaneously the station Moskevská was built in Prague by Soviet engineers.

Beginning in the mid-1980s work began on extending the system northwards through the city centre. This very deep section passed the areas of Yakimanka and Arbat where the first in Moscow 4 station transfer was set up in 1986. In 1987 this was followed by the station Chekhovskaya located near the Pushkin Square. In 1988 the final extension through the centre first deviated eastwards to include Tsvetnoy Boulevard and then crossed the ring at Novoslobodskaya before continuing northwards to Savyolovsky Rail Terminal.

Afterwards construction of the Timiryazevsky radius followed and in 1991 the major 5 station extension brought the line to the northern districts of Timiryazvesky, Butyrsky, Marfino and Otradnoye itself. In addition the line had interchanges with 3 major railway lines. The unique station Timiryazveskaya is the only one in Moscow built to the Deep single-vault (Leningrad) design. The Timiryazevsky radius had two more extensions, Biberevo in 1992 and Altufyevo in 1994 making it the northernmost in the system.

On the opposite Serpukhovsky end, in the early 2000s three extensions were built: Ulitsa Akademika Yangelya (2000), Annino (2001) and Bulvar Dmitriya Donskogo (2002). The latter carried the line into Northern Butovo and was the first to cross MKAD beltway. Today the line is the only one in Moscow for which no extension plans or proposals exist.

[edit] Timeline

	Serpukhovsko-Timiryazevskaya Line
								Altufyevo
								Bibirevo
								Otradnoye
								Vladykino
								Petrovsko-Razumovskaya
								Timiryazevskaya
								Dmitrovskaya
								Savyolovskaya
								Mendeleyevskaya
								Tsvetnoy Bulvar
								Chekhovskaya
								Borovitskaya
								Polyanka
								Serpukhovskaya
								Tulskaya
								Nagatinskaya
								Nagornaya
								Nakhimovsky Prospekt
								Sevastopolskaya
								Chertanovskaya
								Yuzhnaya
								Prazhskaya
								Ulitsa Akademika Yangelya
								Annino
								Bulvar Dmitriya Donskogo
edit

[edit] Transfers

[edit] Rolling stock

The line is served by the Varshavskoe (№ 8) and Vladykino (№ 14) depots. In 2005 it began a slow transition to eight carriage trains. As of November 2005, Vladykino completed its transition and presently has 43 eight-carriage trains assigned to them. Varshavskoe began later and completed its transition in March 2006 with 38 eight-carriage trains. The line received new 81-714/717 trains upon its opening in 1983. Due to its recent extensions various trains were added to its ever-growing stock, some surplus from other depots, others factory fresh 81-714.5/717.5 and 81-714.5M/717.5M. When the Butovskaya Light Metro Line opened, the Varshavskoe depot became home to the new three-carriage 81-740/741 "Rusich" (also known as "Skif") trains, 12 of which are currently being used.

[edit] Recent events and future plans

Second exits at Petrovsko-Razumovskaya, Savyolovskaya and Timiryazevskaya are planned. However, in terms of extensions, the line is thought to be complete and no new building works are planned.

Wikimedia Commons has media related to: Serpukhovsko-Timiryazevskaya Line

v • d • e Lines of the Moscow Metro
	Sokolnicheskaya		Zamoskvoretskaya		Arbatsko-Pokrovskaya
	Filyovskaya		Koltsevaya		Kaluzhsko-Rizhskaya
	Tagansko-Krasnopresnenskaya		Kalininskaya		Serpukhovsko-Timiryazevskaya
	Lyublinskaya		Kakhovskaya		Butovskaya
List of Moscow metro stations