Afro-Panamanian
In 1904 when the construction of the Panama Canal was taken over by the United States for the failure of the French company, will again resort to the West Indian worker. Although between 1904 and 1914 the vast majority of Afro-West Indians who arrived in Panama did a one-year contract with the idea of returning to their home islands once the offshore project, after construction of the canal many Afro-Antillean stayed in Panama. Afro-West Indians who remained in Panama many got jobs in the Canal Zone and became the largest immigrant group in Panama. On the subject of Afro-Antillean Panama, Leslie B. Rout said that when the canal was opened in 1914, some 20,000 African-West Indians remained in Panama.
Panama Canal Railway
By July 1852, the company had finished of track and reached the Chagres River, where an enormous bridge had to be built. The first wooden bridge failed when the Chagres rose by over in a day and washed it away. Work was begun on a much higher, , hefty iron bridge, which took more than a year to finish. In all, the company built more than 170 more bridges and culverts.
In January 1854, excavation began at the summit of the Continental Divide at the Culebra Cut, where the earth had to be cut from to deep over a distance of about . Several months were spent digging. Later the Panama Canal required years to cut through this area deeply enough for a canal. The road over the crest of the continental divide at Culebra was finally completed from the Atlantic side in January 1855, 37 miles (60 km) of track having been laid from Aspinwall (Colón). A second team, working under less harsh conditions with railroad track, ties, railroad cars, steam locomotives, and other supplies brought around Cape Horn by ship, completed its of track from Panama City to the summit from the Pacific side of the isthmus at the same time.