State Route 75, 77 and 78 in Arizona

State Route 75 in Arizona

Get started Duncan
End three way
Length 19 mi
Length 31 km
Duncanthree way

According to ablogtophone, State Route 75 is a state route in the U.S. state of Arizona. The road forms a short north-south route in the east of the state for 19 miles between Duncan and Three Way.

Travel directions

State Route 75 connects US 70 in Duncan to US 191 in the hamlet of Three Ways. The road parallels the New Mexico state border, through a wide valley. To the east are mountains with peaks up to approximately 2,300 meters. The road itself runs at an altitude of approximately 1,100 meters.


State Route 72 was granted state highway status by the state of Arizona in 1932. The route then ran a little further, from Duncan to Clifton. However, it was a gravel road at the time. The road was paved in the second half of the 1930s. The northernmost section between Three Ways and Clifton later became part of US 666, which in turn became US 191.

Traffic intensities

1,500 to 3,000 vehicles use State Route 75 every day.

State Route 77 in Arizona

Get started Tucson
End Navajo Reservation
Length 254 mi
Length 409 km

Oro Valley


Oracle Junction





Show Low



Navajo Indian Reservation

According to beautyphoon, State Route 77 is a state route in the U.S. state of Arizona. The road forms a long north-south route through the eastern half of the state, from Tucson through Globe and Holbrook to the Navajo Indian Reservation. State Route 77 has a long double numbering with US 60 between Globe and Show Low. State Route 77 is a total of 409 kilometers long.

Travel directions

State Route 77 in the northern exurbs of Tucson.

Tucson – Globe

State Route 77 begins in the north of the large city of Tucson at a junction with Interstate 10. State Route 77 first follows Miracle Mile east for a short while, then turns north onto Oracle Road. This is a major urban arterial with 2×3 lanes. There are many businesses and shops along the road. The road runs through the sprawling northern suburbs of Tucson, along the foothills of the Santa Catalina Mountains. The road has a minimum of four lanes until Oracle Junction, 20 miles north of Tucson. Almost this entire route runs through built-up areas.

Near the village of Oracle, State Route 77 crosses an approximately 1,300-foot mountain pass north of the Santa Catalina Mountains. This area consists of dry desert. The road then follows a wide valley to the north, through the village of Mammoth. The area gets more mountainous south of Globe, but State Route 77 doesn’t go over high mountain passes. Just before Globe, State Route 77 merges with US 70.

Globe – Show Low

The entire route between Globe and Show Low is double-numbered with US 60 spanning 140 kilometers.

Show Low – Navajo Indian Reservation

State Route 77 between Snowflake and Holbrook.

From the town of Show Low, State Route 77 heads north over a barren plateau and descends gradually and almost unnoticed from 1,800 to 1,500 meters. Only the village of Snowflake is located 80 kilometers between Show Low and Holbrook. Holbrook is a regional center on Interstate 40. State Route 77 runs here for a bit on I-40 east of Holbrook.

North of I-40, State Route 77 crosses a barren desert plateau regularly interrupted by mesas and buttes, landforms composed of a flat-topped mountain that rises abruptly above the landscape. State Route 77 ends in the Navajo Indian Reservation, but then physically continues as BIA 6 to State Route 264.


State Route 77 was added to the network of state routes in Arizona in 1941. It’s a pretty major through-traffic road south between Tucson and Globe and north to I-40 at Holbrook. Due to low traffic volumes, State Route 77 is generally a single-lane road, except in Tucson, where State Route 77 is a busy urban arterial. Due to the lack of a regional highway network around Tucson, State Route 77 handles a lot of traffic. In 2015-2016, the road north of Tucson was widened to 2×3 lanes to Catalina.

Traffic intensities

Every day, 40,000 to 54,000 vehicles drive Miracle Mile and Oracle Road in Tucson, gradually dropping north to 20,000 vehicles near Oracle Junction. The rest of the route to Globe is a lot less busy with 1,300 to 4,000 vehicles. The section from Show Low to Holbrook has 4,000 to 8,000 vehicles per day. Only 1,000 vehicles drive into the Navajo Indian Reservation.

State Route 78 in Arizona

Get started three way
End New Mexico
Length 19 mi
Length 31 km
three wayNew Mexico NM-78

State Route 78 is a state route in the U.S. state of Arizona. The road forms an east-west connection in the far east of the state, from Three Way to the New Mexico state border. State Route 78 is 19 miles long.

Travel directions

State Route 78 east of Three Way.

In the hamlet of Three Way, State Route 78 begins at an intersection with US 191 and State Route 75. Three Way is at an elevation of 1,100 meters and the road heads east into the mountains. The road is sometimes quite winding and rises to about 1,900 meters near the border with the state of New Mexico. State Route 78 then continues in New Mexico to US 180.


The road has been around since the 1920s, but was not numbered State Route 78 until 1959. At the time, the road was still a gravel road and was not paved until the late 1960s and early 1970s. The track was created to connect to the already existing State Route 78 in New Mexico.

Traffic intensities

Every day, 300 vehicles drive on State Route 78, which is very quiet.

State Route 78 in Arizona