2016 Fall Mountain Trip Part 25; Arizona State Route 69 and Interstate 17 to Phoenix (the history of AZ 69, AZ 79 ii, and I-17)
Upon taking Arizona State Route 89A Spur on Fain Road southeast from mainline AZ 89A I made a left turn south onto AZ 69. My next destination was in Phoenix by way of AZ 69 and I-17. Both AZ 69 and I-17 serve as part of a corridor that made travel through central Arizona massively easier through the progression of the 20th Century. This article serves as the 25th entry in the 2016 Fall Mountain Trip Series. Part 24 covered the history of AZ 89A/Old US 89A from Flagstaff to Prescott: 2016 Fall Mountain Trip Part 24; Arizona State Route 89A/Old US Route 89A Prior to the designation of the current AZ 69 the only State maintained highway that took traffic from the Phoenix area to Prescott was US Route 89 (likely US 280 for a short time) over the Bradshaw Mountains via Yarnell Hill and Prescott National Forest. The grades of US 89 on Yarnell Hill were extremely hazardous even by the conventions of the 1920s and the route through Prescott National Forest...