The project ran out of steam following ministerial changes and the start of World War I which affected the economy of Argentina and the input of technology and investment required from Europe. The northern main line from the coast reached Ingeniero Jacobacci in 1916. 282 km of the southern main line from Deseado to Las Heras, and the 197 km branch line from Comodoro Rivadavia to Sarmiento were laid, but never connected with each other or the northern network.