Transportation in Arizona
Encyclopedia

Highways

Main interstate routes include I-17, and I-19 running north-south, I-40, I-8, and I-10
Interstate 10 in Arizona
In the U.S. state of Arizona, Interstate 10, the major east–west Interstate Highway in the southern United States, runs east from California, enters Arizona and continues through Phoenix and Tucson and exits at the border with New Mexico.-Route description:...

 running east-west, and a short stretch of I-15 running northeast/southwest through the extreme northwestern corner of the state.

Phoenix

Phoenix
Phoenix, Arizona
Phoenix is the capital, and largest city, of the U.S. state of Arizona, as well as the sixth most populated city in the United States. Phoenix is home to 1,445,632 people according to the official 2010 U.S. Census Bureau data...

 is served by a combination of interstates
Interstate Highway System
The Dwight D. Eisenhower National System of Interstate and Defense Highways, , is a network of limited-access roads including freeways, highways, and expressways forming part of the National Highway System of the United States of America...

, U.S. Highways, and state routes, many of which were funded by a ½ cent general sales tax measure approved by Maricopa County
Maricopa County, Arizona
-2010:Whereas according to the 2010 U.S. Census Bureau:*73.0% White*5.0% Black*2.1% Native American*3.5% Asian*0.2% Native Hawaiian or Pacific Islander*3.5% Two or more races*12.7% Other races*29.6% Hispanic or Latino -2000:...

 voters in 1985. New freeways are constantly being added to the area, such as Loop 101, Loop 202
Arizona State Route 202
State Route 202, or Loop 202, is the beltway encompassing the eastern Phoenix, Arizona, United States Metropolitan area. It navigates and surrounds the cities of Tempe, Mesa, Chandler, and Gilbert, making it very vital to the area freeway system...

, and eventually SR 24 and SR 30. Currently, two major interstates serve the area, Interstate 10 and Interstate 17. In the past decade, more than 100 miles of new freeway have been constructed in the metro-Phoenix region by ADOT.

Tucson

The Tucson metropolitan area is primarily served by I-10
Interstate 10 in Arizona
In the U.S. state of Arizona, Interstate 10, the major east–west Interstate Highway in the southern United States, runs east from California, enters Arizona and continues through Phoenix and Tucson and exits at the border with New Mexico.-Route description:...

, I-19 and State Route 77. I-19 departs from I-10 in the southern part of Tucson, runs through southern Tucson (including an exit serving the historic Mission San Xavier
Mission San Xavier del Bac
Mission San Xavier del Bac is a historic Spanish Catholic mission located about 10 miles south of downtown Tucson, Arizona, on the Tohono O'odham San Xavier Indian Reservation...

) and the retirement community of Green Valley
Green Valley, Arizona
Green Valley is a census-designated place in Pima County, Arizona, United States. The population was 17,283 at the 2000 census.-Geography:Green Valley is located at ....

 and terminates in Nogales
Nogales, Arizona
Nogales is a city in Santa Cruz County, Arizona, United States. The population was 21,017 at the 2010 census. According to 2005 Census Bureau estimates, the population of the city is 20,833. The city is the county seat of Santa Cruz County....

, in Santa Cruz County
Santa Cruz County, Arizona
-2010:Whereas according to the 2010 U.S. Census Bureau:*73.5% White*0.4% Black*0.7% Native American*0.5% Asian*0.0% Native Hawaiian or Pacific Islander*2.0% Two or more races*22.9% Other races*82.8% Hispanic or Latino -2000:...

, at the international border with Mexico
Mexico
The United Mexican States , commonly known as Mexico , is a federal constitutional republic in North America. It is bordered on the north by the United States; on the south and west by the Pacific Ocean; on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of...

. Destination signs on I-19 have metric
Metric system
The metric system is an international decimalised system of measurement. France was first to adopt a metric system, in 1799, and a metric system is now the official system of measurement, used in almost every country in the world...

 distance figures in kilometers instead of standard miles. State Route 77 serves North Tucson and Tucson's northern suburbs including Casas Adobes
Casas Adobes, Arizona
Casas Adobes is a census-designated place located in the northern metropolitan area of Tucson, Arizona . The population was 54,011 at the 2000 census...

, Catalina Foothills
Catalina Foothills, Arizona
Catalina Foothills is a census-designated place located north of Tucson in Pima County, Arizona, United States. Situated in the southern foothills of the Santa Catalina Mountains, Catalina Foothills had a population of 53,794 at the 2000 census...

, Oro Valley
Oro Valley, Arizona
Oro Valley, incorporated in 1974, is a suburban town located north of Tucson, Arizona, USA in Pima County. According to a July 2008 estimate, the population of the town is 43,223, an increase from 29,700 in 2000 Oro Valley, incorporated in 1974, is a suburban town located north of Tucson,...

, and Catalina
Catalina, Arizona
Catalina is a census-designated place in Pima County, Arizona, United States. The population was 7,025 at the 2000 census. Catalina continues to experience increasing population growth, while attempting to maintain its rural character...

. State Route 77 continues northward until it terminates at the Navajo Indian Reservation in northeastern Arizona.

State Route 210 (Barraza-Aviation Parkway) is a limited-access parkway built in the early 1990s to connect downtown Tucson to the southeastern portion of the city. Few new limited-access roads are in the plans in Tucson due to strong community opposition to freeways. However, a large-scale reconstruction and expansion of Interstate 10 was supported and completed in mid-2009.

Yuma, Flagstaff & Casa Grande

Yuma
Yuma, Arizona
Yuma is a city in and the county seat of Yuma County, Arizona, United States. It is located in the southwestern corner of the state, and the population of the city was 77,515 at the 2000 census, with a 2008 Census Bureau estimated population of 90,041....

 is served by I-8, while Casa Grande
Casa Grande, Arizona
Casa Grande is a city in Pinal County, approximately halfway between Phoenix and Tucson in the U.S. state of Arizona. According to 2010 Census, the population of the city is 48,571...

 served by I-8 and I-10; Flagstaff
Flagstaff, Arizona
Flagstaff is a city located in northern Arizona, in the southwestern United States. In 2010, the city's population was 65,870. The population of the Metropolitan Statistical Area was at 134,421 in 2010. It is the county seat of Coconino County...

 is served by I-17 and I-40. U.S. Route 95 parallels the Colorado River, from Las Vegas
Las Vegas, Nevada
Las Vegas is the most populous city in the U.S. state of Nevada and is also the county seat of Clark County, Nevada. Las Vegas is an internationally renowned major resort city for gambling, shopping, and fine dining. The city bills itself as The Entertainment Capital of the World, and is famous...

 to the Mexican
Mexico
The United Mexican States , commonly known as Mexico , is a federal constitutional republic in North America. It is bordered on the north by the United States; on the south and west by the Pacific Ocean; on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of...

 border near Yuma.

Historic U.S. Route 66, a major route for Midwestern emigrants prior to the advent of the interstate highway system, traversed the northern part of the state, passing through Flagstaff and Kingman. Route 66 in Arizona closely followed the route of what is now Interstate 40 except for an 88 mile stretch between Seligman
Seligman, Arizona
Seligman is a census-designated place in Yavapai County, Arizona, United States. The population was 456 at the 2000 census.-History:Between 1889-1891, Seligman was established by the Theut and Moultrie families. Both were prosperous slaughterhouse owners in Southern antebellum families who lost...

 and Kingman
Kingman, Arizona
Kingman is located in a desert climate on the edge of the Mojave Desert, but its higher elevation and location between the Colorado Plateau and the Lower Colorado River Valley tempers summer high temperatures and contributes to winter cold and rare snowfall. Summer daytime highs reach above 90 °F ...

 now known as State Route 66, where the route veered to the north passing through Peach Springs
Peach Springs, Arizona
Peach Springs is a census-designated place in Mohave County, Arizona, United States. The population was 600 at the 2000 census. Peach Springs serves as the administrative headquarters of the Hualapai people, and is located on the Hualapai Reservation.-Geography:Peach Springs is located at ...

.

Public transportation and intercity bus

The Phoenix and Tucson metropolitan areas are served by public bus transit systems. Yuma and Flagstaff also have public bus systems. Greyhound Lines
Greyhound Lines
Greyhound Lines, Inc., based in Dallas, Texas, is an intercity common carrier of passengers by bus serving over 3,700 destinations in the United States, Canada and Mexico, operating under the well-known logo of a leaping greyhound. It was founded in Hibbing, Minnesota, USA, in 1914 and...

 serves Phoenix, Tucson, Flagstaff, Yuma, and several smaller communities statewide.

Amtrak
Amtrak
The National Railroad Passenger Corporation, doing business as Amtrak , is a government-owned corporation that was organized on May 1, 1971, to provide intercity passenger train service in the United States. "Amtrak" is a portmanteau of the words "America" and "track". It is headquartered at Union...

 operates the Southwest Chief, Sunset Limited, and Texas Eagle through Arizona.

A light rail system called METRO opened in December 2008, connecting Phoenix with the nearby cities of Tempe
Tempe, Arizona
Tempe is a city in Maricopa County, Arizona, USA, with the Census Bureau reporting a 2010 population of 161,719. The city is named after the Vale of Tempe in Greece. Tempe is located in the East Valley section of metropolitan Phoenix; it is bordered by Phoenix and Guadalupe on the west, Scottsdale...

 and Mesa
Mesa, Arizona
According to the 2010 Census, the racial composition of Mesa was as follows:* White: 77.1% * Hispanic or Latino : 26.54%* Black or African American: 3.5%* Two or more races: 3.4%* Native American: 2.4%...

, with plans for expansion in the future.

In May 2006, voters in Tucson approved a Regional Transportation Plan (a comprehensive bus transit/streetcar/roadway improvement program), and its funding via a new half-cent sales tax increment. The centerpiece of the plan is a light rail streetcar system (possibly similar to the Portland Streetcar
Portland Streetcar
The Portland Streetcar is a streetcar system in Portland, Oregon, that opened in 2001 and serves areas surrounding downtown Portland. It is currently a single line that is almost long and serves some 12,000 daily riders, but a second line is expected to open in 2012.As with the heavier-duty MAX...

 in Oregon) that will travel through the downtown area, connecting the main University of Arizona
University of Arizona
The University of Arizona is a land-grant and space-grant public institution of higher education and research located in Tucson, Arizona, United States. The University of Arizona was the first university in the state of Arizona, founded in 1885...

 campus with the Rio Nuevo master plan area on the western edge of downtown.

Aviation

Airports with regularly scheduled commercial flights include: Phoenix Sky Harbor International Airport
Phoenix Sky Harbor International Airport
Phoenix Sky Harbor International Airport is a joint civil-military public airport located southeast of the central business district of the city of Phoenix, in Maricopa County, Arizona, United States...

 (IATA: PHX, ICAO: KPHX) in Phoenix (the largest airport and the major international airport in the state); Tucson International Airport
Tucson International Airport
Tucson International Airport is a joint civil-military public airport located six miles south of the central business district of Tucson, in Pima County, Arizona, United States, and is the second largest and busiest airport in Arizona, after Sky Harbor International Airport in Phoenix.- Overview...

 (IATA: TUS, ICAO: KTUS) in Tucson; Phoenix-Mesa Gateway Airport
Phoenix-Mesa Gateway Airport
Phoenix-Mesa Gateway Airport , formerly Williams Gateway Airport and Williams Air Force Base , is a commercial airport located in the southeastern area of the city of Mesa, Arizona, and southeast of Phoenix, in Maricopa County, Arizona, United States. The airport is owned and operated by the...

 (IATA: AZA, ICAO: KIWA) in Mesa; Yuma International Airport
Yuma International Airport
Yuma International Airport , a shared-use airport together with Marine Corps Air Station Yuma, is located three nautical miles south of the central business district of Yuma, a city in Yuma County, Arizona, United States...

 (IATA: YUM, ICAO: KYUM) in Yuma; Prescott Municipal Airport (PRC) in Prescott; Flagstaff Pulliam Airport
Flagstaff Pulliam Airport
Flagstaff Pulliam Airport is a city-owned public-use airport located four nautical miles south of the central business district of Flagstaff, a city in Coconino County, Arizona, United States...

 (IATA: FLG, ICAO: KFLG) in Flagstaff, and Grand Canyon National Park Airport
Grand Canyon National Park Airport
Grand Canyon National Park Airport is a state-owned public-use airport located in Tusayan, a CDP in unincorporated Coconino County, Arizona, United States. It is near Grand Canyon National Park, seven miles from the South Rim of the Grand Canyon...

 (GCP), a small, but busy, single-runway facility providing tourist flights, mostly from Las Vegas. Phoenix Sky Harbor is the 7th busiest airport in the world in terms of aircraft movements, and regularly in the top 15 for passengers.

Other significant airports without regularly scheduled commercial flights include Scottsdale Municipal Airport (IATA: SCF, ICAO: KSDL) in Scottsdale.

(See also: List of airports in Arizona)

Passenger Rail

Two Amtrak
Amtrak
The National Railroad Passenger Corporation, doing business as Amtrak , is a government-owned corporation that was organized on May 1, 1971, to provide intercity passenger train service in the United States. "Amtrak" is a portmanteau of the words "America" and "track". It is headquartered at Union...

 routes serve Arizona communities: the Southwest Chief
Southwest Chief
The Southwest Chief is a passenger train operated by Amtrak on a 2256-mile BNSF route through the Midwestern and Southwestern United States. It runs from Chicago, Illinois, to Los Angeles, California, passing through Illinois, Iowa, Missouri, Kansas, Colorado, New Mexico, Arizona, and California...

passes through Winslow
Winslow, Arizona
-Demographics:As of the census of 2000, there were 9,520 people, 2,754 households, and 1,991 families residing in the city. The population density was 773.1 people per square mile . There were 3,198 housing units at an average density of 259.7 per square mile...

, Flagstaff, and Kingman
Kingman, Arizona
Kingman is located in a desert climate on the edge of the Mojave Desert, but its higher elevation and location between the Colorado Plateau and the Lower Colorado River Valley tempers summer high temperatures and contributes to winter cold and rare snowfall. Summer daytime highs reach above 90 °F ...

, while the Texas Eagle
Texas Eagle
The Texas Eagle is a 1306-mile passenger train route operated by Amtrak in the central and western United States. Trains run daily between Chicago, Illinois, and San Antonio, Texas, and continue to Los Angeles, California, 2728 miles total, three days a week...

passes through Benson
Benson, Arizona
-Transportation:Benson Airport is located 3 miles north west of the city.Benson is served by Interstate 10 to the north, which travels directly to downtown Tucson....

, Tucson, Maricopa
Maricopa, Arizona
-Surrounding Municipalities:-Demographics:As of the census of 2010, there were 43,482 people, 14,359 households, and 11,110 families residing in the city. The population density was 1,356.8 people per square mile . There were 17,240 housing units at an average density of 540.4 per square mile...

 and Yuma. Although the Texas Eagle passes much closer to Phoenix than the Southwest Chief does, Phoenix is linked to the Amtrak system via motorcoach from Flagstaff.
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