Between 1872 and 1889, many bridges were designed by the Eiffel company, created in 1863 by Gustave Eiffel, when Vietnam was part of the French Indochina. However, some works are inadvertently attributed to the Eiffel company, the Truong Tien Bridge was designed by the company Schneider et Cie and Cie de Letellier while the Long Biên Bridge was designed by Daydé et Pillé, the latter having joined the Eiffel group only in 1964, which may have caused confusion.[1]