Interstate 45 (I-45) is a major Interstate Highway located entirely within the U.S. state of Texas. While most Interstate routes which have numbers ending in "5" are cross-country north–south routes, I-45 is comparatively short, with the entire route located in Texas. Additionally, it has the shortest length of all the interstates that end in a "5". It connects the cities of Dallas and Houston, continuing southeast from Houston to Galveston over the Galveston Causeway to the Gulf of Mexico.
Interstate 85 (I-85) is a major Interstate Highway in the Southeastern United States. Its southern terminus is at an interchange with I-65 in Montgomery, Alabama; its northern terminus is an interchange with I-95 in Petersburg, Virginia, near Richmond. It is nominally north–south as it carries an odd number, but it is physically oriented northeast–southwest and covers a larger east-west span than north-south. While most Interstates that end in a "5" are cross-country, I-85 is primarily a regional route serving five southeastern states: Virginia, North Carolina, South Carolina, Georgia, and Alabama.
In Downtown Atlanta, the Downtown Connector or 75/85 is the concurrent section of Interstate 75 and Interstate 85 through the core of the city. Beginning at the I-85/Langford Parkway interchange, the Downtown Connector runs generally due north, meeting the west–east I-20 in the middle. Just north of this is the Grady Curve around Grady Memorial Hospital. Continuing north, the terminus of the Downtown Connector is the Brookwood Interchange or Brookwood Split in the Brookwood area of the city. The overall length of the Downtown Connector is approximately 7.5 miles (12 km). Since the 2000s, it has been officially named James Wendell George Parkway for most of its length, although it is still designated the Connector in the mainstream. It also has unsigned designations State Route 401 (I-75) and State Route 403 (I-85) along its length, due to I-75 and I-85 having 400-series reference numbers.
Interstate 285 (I-285) is an auxiliary Interstate Highway encircling Atlanta, Georgia, for 63.98 miles (102.97 km). It connects the three major Interstate Highways to Atlanta: I-20, I-75, and I-85. Colloquially referred to as the Perimeter, it also carries unsigned State Route 407 (SR 407) and is signed as Atlanta Bypass on I-20, I-75, and I-85.
Georgia State Route 400 is a freeway and state highway in the U.S. state of Georgia serving parts of Metro Atlanta. It is concurrent with U.S. Route 19 (US 19) from exit 4 (Interstate 285) until its northern terminus south-southeast of Dahlonega, linking the city of Atlanta to its north-central suburbs and exurbs. SR 400 travels from the Lindbergh neighborhood in the Buckhead district of Atlanta, at Interstate 85 (I-85), to just south-southeast of Dahlonega. Like the Interstate highways, it is a limited-access road, but unlike the interstates, the exit numbers are not mileage-based, they are sequential. Once SR 400 passes exit 18 (SR 369), it changes from a limited-access freeway into an at-grade divided highway with traffic lights, but still with a high speed limit of 65 miles per hour (105 km/h), and ends at the J.B. Jones Intersection at SR 60/SR 115 in Lumpkin County.
Interstate 575 (I-575) is an auxiliary Interstate Highway in the United States, which branches off I-75 in Kennesaw and connects the Atlanta metropolitan area with the North Georgia mountains, extending 30.97 miles (49.84 km). I-575 is also the unsigned State Route 417 (SR 417) and is cosigned as SR 5. I-575 begins in northern Cobb County near Kennesaw and goes mostly through Cherokee County, ending at its northern border with Pickens County, where it continues as SR 515. It is also the Phillip M. Landrum Memorial Highway in honor of Phillip M. Landrum (1907–1990), who was a Representative from Georgia. It is entirely concurrent with Georgia State Route 5.
State Route 316 (SR 316), also known as University Parkway, or Georgia 316, is a 38.9-mile-long (62.6 km) state highway that exists in the northern part of the U.S. state of Georgia. It links the Atlanta metropolitan area with Athens, home of the University of Georgia.
State Route 141 (SR 141) is a 34.1-mile-long (54.9 km) state highway that runs southwest-to-northeast in the northwest part of the U.S. state of Georgia. It connects the Buckhead area of Atlanta with Cumming. Its routing exists within portions of Fulton, DeKalb, Gwinnett, Forsyth counties.
Interstate 675 (I-675) is an 11.04-mile-long (17.77 km) auxiliary Interstate Highway in the southeast part of the Atlanta metropolitan area. It travels from I-75 in Stockbridge in the south to I-285 in the north. I-675 is also designated as the Terrell Starr Parkway and also has the unsigned internal state route designation of State Route 413 (SR 413).
The Northwest Corridor Express Lanes and locally known as the Tollercoaster, is a completed Georgia Department of Transportation (GDOT) project which has put Peach Pass-only toll lanes along Interstate 75 (I-75) and I-575 in the northwestern suburbs of the Atlanta metropolitan area. It carries traffic between northwest Atlanta and Cobb and Cherokee counties by adding two lanes for paying vehicles along I-75, with one continuing up a dedicated exit onto I-575 to Sixes Road, and the other straight on I-75 to Hickory Grove Road, just past Wade Green Road. North of the interchange where they split, the new lanes are located in the median, between the original northbound and southbound lanes. From the Perimeter to I-575, the road had already been built with 12 to 16 lanes, which required other plans, including via eminent domain.
State Route 166 (SR 166) is a state highway in the U.S. state of Georgia. It connects the Alabama state line with the city of Atlanta. The highway travels through Carrollton, McWhorter, and East Point. Except for the Carrollton and East Point/Atlanta areas, the highway is fairly rural. In Atlanta, it has a limited-access freeway portion that is known as the Arthur B. Langford Jr. Parkway.
In the U.S. state of Arizona, Interstate 10 (I‑10), the major east–west Interstate Highway in the United States Sun Belt, runs east from California, enters Arizona near the town of Ehrenberg and continues through Phoenix and Tucson and exits at the border with New Mexico near San Simon. The highway also runs through the cities of Casa Grande, Eloy, and Marana. Segments of the highway are referred to as either the Papago Freeway, Inner Loop, or Maricopa Freeway within the Phoenix area and the Pearl Harbor Memorial Highway outside metro Phoenix.
Interstate 75 (I-75) in the US state of Georgia travels north–south along the U.S. Route 41 (US 41) corridor in the central part of the state, traveling through the cities of Valdosta, Macon, and Atlanta. It is also designated—but not signed—as State Route 401 (SR 401).
Interstate 85 (I-85) is a major Interstate Highway that travels northeast–southwest in the US state of Georgia. It enters the state at the Alabama state line near West Point, and Lanett, Alabama, traveling through the Atlanta metropolitan area and to the South Carolina state line, where it crosses the Savannah River near Lake Hartwell. I-85 connects North Georgia with Montgomery, Alabama, to the southwest, and with South Carolina, North Carolina, and Virginia to the northeast. Within Georgia, I-85 is also designated as the unsigned State Route 403 (SR 403).
Interstate 85 (I-85) in the U.S. state of South Carolina runs northeast–southwest through Upstate South Carolina. Connecting regionally with Atlanta, Georgia, and Charlotte, North Carolina, it became the first Interstate Highway in South Carolina to have its originally planned mileage completed.
The Outer Perimeter is a freeway originally planned to encircle Atlanta, in the U.S. state of Georgia about 20 to 25 miles outside of Interstate 285, which is colloquially referred to as the Perimeter and is a point of reference for local travel outside Atlanta's city core.
In the US state of Georgia, Interstate 20 (I-20) travels from the Alabama state line to the Savannah River, which is the South Carolina state line. The highway enters the state near Tallapoosa. It travels through the Atlanta metropolitan area and exits the state in Augusta. The highway also travels through the cities of Bremen, Douglasville, Conyers, Covington, and Madison. I-20 has the unsigned state highway designation of State Route 402 (SR 402).
There have been multiple freeway revolts in Atlanta, Georgia. The longest and most famous examples of Interstate opposition were against I-485 and the Stone Mountain Freeway through Intown Atlanta, lasting over 30 years, from the early 1960s until the final construction of Freedom Parkway on a small portion of the contested routes in 1994.
Atlanta's transportation system is a complex infrastructure of several systems, including 47.6 miles of heavy rail, 91 bus transit routes, 1,600 licensed taxis, a comprehensive network of freeways, the world's busiest airport and over 45 miles of bike paths.
