Paper Highways; US Route 280 and US Route 380 in Arizona

In this edition of Paper Highways we examine US Route 280 and US Route 380 within Arizona. Both US 280 and US 380 were planned highways in Arizona that were ultimately consolidated into what became the southern leg of US Route 89.

The History of US Route 280 and US Route 380 in Arizona

In the early drafts of the US Route System in Arizona US Route 89 didn't extend south of Flagstaff. US 280 was planned to be aligned from US 60 (which became US 66) from Ashfork south to US 80 in Phoenix. US 380 was planned be aligned from US 80 in Tucson south to the Mexican Border in Nogales. US 280 and US 380 both appear on the 1925 Bureau of Public Roads draft of the US Route System along with US 89 terminating at US 60 in Flagstaff. A copy of the 1925 Bureau of Public Roads plan of the US Route System can be found here:

Report of Joint Board of Interstate Highways; October 30th 1925

US 280 and US 380 appear to have survived to the final stages of the stages of what became the US Route System or may have even been part of it. To that end there is no known copy of the final US Routes which were approved in November 1926. US 280 and US 380 make an appearance on the 1927 Rand McNally Highway Map of Arizona.

Interestingly the Arizona State Route System was initially based off giving sequential numbers to the State Highways that matched the original US Route System. In the first draft of the Arizona State Highway System the Apache Trail was planned as AZ 66 but was changed to AZ 88 when US 60 became US 66. Curiously though one of the original planned State Highways was AZ 89 which originated in Prescott and tracked northeast to Jerome. AZ 89 terminated in Jerome but was planned to reach Flagstaff. At the time the route from Prescott to Jerome was a well established highway which was well traveled due to the massive mining interests in Jerome. It would seem that Arizona had it's eyes set on extending US 89 to Prescott whenever a quality road from Jerome to Flagstaff could be built. AZ 89 can be also be seen on the 1927 Rand McNally Highway Map of Arizona/New Mexico.

It appears that the State of Arizona was able to convince the AASHO early in the early days of the US Route System that US 89 was a far more important route designation than US 280 and US 380. US 89 appears aligned all the way south to the Mexican Border in Nogales on the 1927 National Map Company Regional Highway Map.

It appears that US 280 and US 380 were never field signed in Arizona. AZ 89 was quickly re-designated as AZ 79 and was built to State Highway standards all the way to Flagstaff by 1938. AZ 79 eventually would become US 89A in 1941 which fulfilled the push to get a US Route to Prescott by way of the mines of Jerome. US 280 was ultimately recycled in 1931 into a new highway between Savannah, GA and Columbus, GA. US 380 was recycled in 1932 as a new highway San Antonio, NM and Albany, TX.

Morgan Territory Road

Morgan Territory Road is an approximately 14.7-mile-long roadway mostly located in the Diablo Range of Contra Costa County, California. The roadway is named after settler Jerimah Morgan who established a ranch in the Diablo Range in 1857. Morgan Territory Road was one of several facilities constructed during the Gold Rush era to serve the ranch holdings. The East Bay Regional Park District would acquire 930 acres of Morgan Territory in 1975 in an effort to establish a preserve east of Mount Diablo. The preserve has since been expanded to 5,324 acres. The preserve functionally stunts the development along roadway allowing it to remain surprisingly primitive in a major urban area. Part 1; the history of Morgan Territory Road During the period of early period of American Statehood much of the Diablo Range of Contra Costa County was sparsely developed. Jerimah Morgan acquired 2,000 acres of land east of Mount Diablo in 1856 and established a ranch in 1857. Morgan Territory Road is

The 1915 Fine Gold Creek Bridge (Madera County)

The 1915 Fine Gold Creek Bridge is an early era arch concrete structure found alongside modern Madera County Road 200. The structure was modeled as a smaller scale of the 1905 Pollasky Bridge (still in ruins at the San Joaquin River) and was one of many early twentieth century improvements to what was then known as the Fresno-Fresno Flats Road. The 1915-era bridge was replaced with a modernized concrete span during 1947 but was never demolished. The original concrete structure can be still found sitting in the brush north of the 2023 Fine Gold Creek Bridge. Part 1; the history of the 1915 Fine Gold Creek Bridge The 1915 Fine Gold Creek Bridge lies near the site of the former mining community of Fine Gold. Mining claims were staked at Fine Gold during the Mariposa War during 1850. The community was never very large but became a stopping point on the stage road between the original Fresno County seat at Millerton and Fresno Flats (now Oakhurst). The stage road eventually bypas

San Francisco's Broadway Tunnel

The Broadway Tunnel in San Francisco is a structure at Russian Hill which connects the neighborhood Chinatown to North Beach. The tunnel was included in the 1948 San Francisco Trafficways Plan as a connector between the Central Freeway and Embarcadero Freeway. The structure was completed in December 1952 and spans 1,616 feet through Russian Hill. The Broadway Tunnel was designated as the Robert C. Levy Tunnel in 1986. Part 1; the history of the Broadway Tunnel Following the discovery of gold at Sutter's Mill in 1848 San Francisco would see a major population boom. The city would expand from the shores of San Francisco Bay inland towards the many steep hills. The hills of San Francisco would prove to be a major hinderance towards the expansion of city. Roads were generally plotted over the tops of hillsides and had steep grades. Russian Hill in particular was one of the steepest and contained numerous streets with grades in excess of twenty percent. Broadway can be seen cros

James Cowlin said…

Thank you for the information about the history of US Route 89 in Arizona. I am aware of some of the history but not in the detail you provided. I have been working on a project to promote travel on US 89 for about 15 years. I wrote an article on what I learned about the history of 89 between Canada and Mexico for my website. Have you researched any of the other sections of the highway? The website is usroute89.com

Jim Cowlin

7:21 PM

Challenger Tom said…

We do have quite a bit on US 89 in Arizona. Off the top of my head some of the articles on US 89 that we have feature; the Navajo Bridge/US 89A, the 1911 Cameron Suspension Bridge, former US 66/89 in Williams, former US 89 on AZ 89, and former US 89A on AZ 89A.

8:14 PM