Before its demise, the Puerto Rico railroad system had some of track and served almost all coastal towns, carrying freight into the Island and transporting agricultural products to the ports for shipping overseas. The construction of the national railroad system produced tunnels and bridges which were noted for their architecture and local importance. The Puente Blanco, completed in 1922, and the Caño San Antonio rail bridge completed in 1932, were designated as Historical Places by the U.S. National Park Service in 1984 and 2009, respectively, while the Guajataca Tunnel was designated as a Historical Monument by the Puerto Rico Legislature in 2000. Many of these structures were designed and built under the supervision of Etienne Totti, who was at the time the head engineer of the American Railroad of Porto Rico and would become the first president of the Puerto Rico Professional College of Engineers.