High Quality Content by WIKIPEDIA articles! High Quality Content by WIKIPEDIA articles! The United States Railroad Administration (USRA) was the name of the nationalized railroad system of the United States between 1917 and 1920. It was possibly the largest American experiment with nationalization, and was undertaken against a background of war emergency.On April 6, 1917, the United States entered World War I, and very soon the nation's railroads proved inadequate to the task of serving the nation's war efforts. There were several sources of the problem. Although the carriers had made massive investments in first years of the twentieth century, there were still inadequacies in terminals, trackage, and rolling stock. Inflation struck the American economy, and when in 1906 Congress empowered the Interstate Commerce Commission (ICC) to set maximum shipping rates, the rail firms had difficulty securing revenue sufficient to keep pace with rising costs