 The last D&RGW narrow-gauge line, from Durango to Silverton, was sold in 1981 to the Durango and Silverton Narrow Gauge Railroad, exactly one hundred years after the line went into operation.In 1988, Rio Grande Industries, the company that controlled the D&RGW under the direction of Philip Anschutz, purchased the Southern Pacific Transportation Company (SP).The D&RGW used Southern Pacific's name with SP due to its name recognition among shippers.