 With this move, Amtrak rerouted the "San Francisco Zephyr" to the Moffat Road line and rebranded it as the current incarnation of the "California Zephyr".Even as the D&RGW exploited the best new standard-gauge technology to compete with other transcontinental carriers, the railroad continued to operate the surviving steam-powered narrow-gauge lines, including the famed narrow-gauge line between Durango and Silverton, Colorado.Most of the remaining narrow-gauge trackage was abandoned in the 1950s and 1960s.