Despite opposition, the project continued. After a competition, it was assigned to the brothers Juan and Ramón Agea under the supervision of the Ministry of Development, Colonization, Industry and Commerce, headed by Luis Robles Pezuela. Of the original 3.15 km-long project, only one part was completed between 1864 and 1865, a road 20 meters wide, which was enormous for those days, without a central median, only a few areas on the side reserved for horses to rest. There were practically no buildings along the boulevard and sidewalks were not considered necessary.