Canyon Diablo, an anglicized version of the Spanish word for “Devil’s Canyon,” is a well-known and formidable deep gorge surrounded by flat land in Kaibab limestone that halted the construction of the Atlantic Pacific Railroad for six months in 1881.

Located 35 miles east of the San Francisco Peaks just north of Flagstaff, the canyon was surveyed and named in 1853 by Army Lt. Amiel W. Whipple, who was exploring the topography of the 35th parallel for the feasibility of building a railroad across northern Arizona.

The need for rail transport became apparent with the opening of mining camps in Mojave County in the late 1870s. Those included Cerbat, Hackberry, Mineral Park, Signal and White Hills mining operations.

The A&P’s route connected Springfield, Missouri to California through Texas, New Mexico and Arizona. Kingman served as the railhead along the A&P for many of these nearby mines.

The A&P was the closest major railway for mining operations around Prescott, notably in the Bradshaw Mountains. The railroad served as the primary method of ore transport especially for mines with contracts at smelters operated by the Pueblo Smelting and Refining Co. of Colorado or the Rio Grande Smelting Co. of Socorro, New Mexico.

Three notable bridges were built for the railroad at Canyon Diablo. The first in 1881 consisted of a one track width(iron). Provisions, including water, were hauled by wagon from Navajo Springs 100 miles to the east.

During the summer of 1881, stone cutters were requisitioned from as far as Chicago and St. Louis, crafting local rock into the bridge-tower footing or pylons still evident today.

The small ephemeral settlement of Canyon Diablo was built to serve the railroad.

Consisting of a nearby telegraph office it was notorious for a number of gun fights and robberies. It also served as a shipping point for wool from local sheep herders.

Iron used in the construction of this edifice was manufactured by the Central Bridge Works in Buffalo, New York. It required 20 railcars to transport the structure in October 1881. The bridge came up several feet short causing the need to import more material necessary for completion.

The first trains to pass over the canyon occurred on July 1, 1882. The bridge measured 550 feet, crossing over a 225-foot-deep basin.

Finishing touches in the weeks that followed included the addition of a wood floor laid across the bridge, the installation of substantial iron railing and the removal of the scaffolding.

The overall product consisted of 11 spans, with 2 measuring 100 feet in length. Two more measured 30 feet in length while the other seven spans measured 40 feet in length. The total cost was $250,000.

No doubt intimidating was the first bridge’s light timbered appearance. The maximum speed of the passenger cars across its rails was four miles per hour, 20 mph less than the standard maximum.

The site was also the scene of the infamous train robbery that occurred at Canyon Diablo station in 1889. An eastbound passenger train had stopped to lubricate the driving mechanism of the locomotive when a group of four men with six-shooters held up their travels. The bandits made off with $800, leaving a safe containing $125,000 behind.

The bandits were eventually captured southeast of Beaver, Utah by a small posse led by the sheriff of Yavapai County.

The A&P was acquired by the Atchison, Topeka and Santa Fe Railway Co. in 1897.

By 1900, the bridge was replaced with a structure of more sturdy manufacture to handle the greater weight of locomotives and rail cars.

Herman Wolf was a proprietor of one of the trading posts at Canyon Diablo. The spelling was changed from Cañon Diablo to Canyon Diablo by the Santa Fe Railway in 1902.

Constructed under the oversight of System Bridge Engineer Clifford Sandberg, the double-track, steel-arch bridge seen today was completed in 1947. Its length is 544 feet while its arch measures 300 feet.

The bridge is heavily used today by trains averaging 50 mph.

Both the bridge and nearby Canyon Diablo settlement remnants are accessible by a three mile rough dirt road north of Two Guns, off Interstate 40.

William Ascarza is an archivist, historian and author of seven books available for purchase online and at select bookstores. These include his latest, “In Search of Fortunes: A Look at the History of Arizona Mining,” available through M.T. Publishing Co. at

tucne.ws/7ka

His other books are “Chiricahua Mountains: History and Nature,” “Southeastern Arizona Mining Towns,” “Zenith on the Horizon: An Encyclopedic Look at the Tucson Mountains from A to Z,” “Tucson Mountains,” “Arizona-Sonora Desert Museum” with Peggy Larson and “Sentinel to the North: Exploring the Tortolita Mountains.” Email Ascarza at

mining@azstarnet.com