Russian ruble in the context of "Krasnoyarsk Dam"

The Crimean Bridge (Russian: Крымский мост, romanized: Krymskiy most, IPA: [ˈkrɨmskʲij most]; Ukrainian: Кримський міст, romanized: Krymskyi mist), also called Kerch Strait Bridge or Kerch Bridge, is a pair of parallel bridges, one for a four-lane road and one for a double-track railway, spanning the Kerch Strait between the Taman Peninsula of Krasnodar Krai in Russia and the Kerch Peninsula of Crimea. Built by the Russian Federation after its annexation of Crimea at the start of 2014, the bridge cost ₽227.92 billion (US$3.7 billion) and has a length of 19 km (12 mi), making it the longest bridge in Europe and the longest bridge ever constructed by Russia.

In January 2015 the multibillion-dollar construction contract for the bridge was awarded to Arkady Rotenberg's Stroygazmontazh. Construction beganin February 2016. The road bridge was inaugurated by Russian president Vladimir Putin on 15 May 2018. It opened for cars on 16 May and for trucks on 1 October. The rail bridge was inaugurated on 23 December 2019 and the first scheduled passenger train crossed the bridge two days later. The bridge was opened for freight trains on 30 June 2020. A record amount of traffic, totalling 36,393 cars, was recorded on 15 August 2020.

Stroygazmontazh (Russian: Стро̀йга̀змонта́ж), also called the S.G.M. Group, is an infrastructure construction firm that operates in Russia primarily via its subsidiaries, specializing in the creation of oil and gas transportation systems. The company was founded in 2008 with operations in construction—particularly of oil and gas infrastructure—in Russia. According to the RBK Group, it is the 44th largest company in Russia by income, with an annual ₽276 billion in revenue.

The ruble, rouble or rubel (Belarusian: рубель, romanized: rubieĺ; Russian: рубль, romanized: rubl'; abbreviation: Br, ISO code: BYN) is the currency of Belarus. It is subdivided into 100 kopecks (Belarusian: капейка, romanized: kapiejka, Russian: копейка, romanized: kopeyka).

The exchange rate of the Belarusian ruble is determined based on a basket of currencies consisting of the Russian ruble (with a weight of 60%), the US dollar (with a weight of 30%) and the renminbi (with a weight of 10%). The euro was part of said currency basket but was excluded in December 2022 due to a decrease in the volume of trade between Belarus and the European Union.

Currency substitution is the use of a foreign currency in parallel to or instead of a domestic currency.

Currency substitution can be full or partial. Full currency substitution can occur after a major economic crisis, such as in Ecuador. Some small economies, for whom it is impractical to maintain an independent currency, use the currencies of their larger neighbours; for example, Liechtenstein uses the Swiss franc.

A zolotnik (Russian: золотни́к, abbr.: zol.) is an obsolete Russian unit of weight, equal to 0.1505 avoirdupois ounces, 0.13715 troy ounce, or 4.2658 grams (about 65.83 grains). Used from the 10th to 20th centuries, its name is derived from the Russian word zoloto, meaning gold. As a unit, the zolotnik was the standard for silver manufacture, much as the troy ounce is currently used for gold and other precious metals.

This unit was originally based on a coin of the same name. The zolotnik circulated in the Kievan Rus until the 11th century; it was equal in weight to the Byzantine Empire's solidus.

The ruble sign, ₽, is the currency sign used for the Russian ruble, the official currency of Russia. Its form is a Cyrillic letter Р with an additional horizontal stroke. The design was approved on 11 December 2013 after a public poll that took place a month earlier.

In Russian orthography, the sign almost always follows the number (the monetary value), and in many cases there is a space between the two. In English orthography, it usually precedes the number.

The ruble or rouble (/ˈruːbəl/; Russian: рубль, IPA: [rublʲ]) is a currency unit. Currently, currencies named ruble in circulation include the Russian ruble (RUB, ₽) in Russia and the Belarusian ruble (BYN, Rbl) in Belarus. These currencies are subdivided into one hundred kopeks. No kopek is currently formally subdivided, although denga (½ kopek) and polushka (½ denga, thus ¼ kopek) were minted until the 19th century. Additionally, the Transnistrian ruble is used in Transnistria, an unrecognized breakaway province of Moldova.

Historically, the grivna, ruble and denga were used in Russia as measurements of weight. In 1704, as a result of monetary reforms by Peter the Great, the imperial ruble of the Russian Empire became the first decimal currency. The silver ruble was used until 1897 and the gold ruble was used until 1917. The Soviet ruble officially replaced the imperial ruble in 1922 and continued to be used until 1993, when it was formally replaced with the Russian ruble in the Russian Federation and by other currencies in other post-Soviet states. In the past, several other countries influenced by the Russian Empire and the Soviet Union had currency units that were also named ruble, including the Latvian ruble, Tajikistani ruble and Transcaucasian ruble (later Armenian ruble, Azerbaijani ruble, Georgian ruble).

The kopeck or kopek is or was a coin or a currency unit of a number of countries in Eastern Europe closely associated with the economy of Russia. It is usually the smallest denomination within a currency system; 100 kopeks are worth 1 ruble or 1 hryvnia.

Originally, the kopeck was the currency unit of Imperial Russia, the Russian Soviet Federative Socialist Republic and then the Soviet Union (as the Soviet ruble). As of 2020, it is the currency unit of Russia, Belarus and Ukraine. The Russian kopeck is also used in the two breakaway states of Abkhazia and South Ossetia. Transnistria, another breakaway state has its own kopeck. In the past, several other countries influenced by Russia and the Soviet Union had currency units that were also named kopecks.