This former mainline of the Arizona and South Eastern Railway was built in 1902 between Benson (and a connection with the Southern Pacific transcontinental mainline there) and the mining town of Bisbee, Arizona. The line was further extended to El Paso, TX, via Douglas, later that same year. The A&SE was a subsidiary of the El Paso and Southwestern Railway, itself leased to Southern Pacific in 1924, and purchased outright in 1955. Since the SP already had a line between Benson and Douglas, this line was considered redundant and thus a majority of the line between Curtiss and a lime plant at Paul Spur was abandoned soon after.
Curtiss to Paul Spur, AZ
San Pedro Southwestern Railroad