Official of the Royal Corps of Engineers coming from the Engineering Academy of Alcalá de Henares, where he joined on February 17^th, 1803.

On January 23^rd, 1818, the Spanish nobleman Joaquín Viadó came to Russia to serve in the Corps of Engineers of Ways of Communication. He was thirty-one years old. He was assigned to the direct service of Lieutenant General Betancourt for special projects. Viadó was in charge of the construction of roads in the neighbourhood of St. Petersburg and the central regions of the country.

Later he was sent to Chisinau (now the capital of Moldova) in order to supervise the fords and roads for the movements of troops. After returning from the army in 1830, he entered again in the Department of Ways of Communication, and was appointed inspector of roads in the vicinity of St. Petersburg.

A well educated man. Joaquin Viadó had a good knowledge of mechanics, mathematics, hydraulics, military arts and languages, including Russian.

In Russia, he married the daughter of the state councillor Kniazev, Natalia, and fathered a daughter they named Fiona in 1827. On September 28^th, 1838 he died in St. Petersburg.