Interstate 40 (I-40) is a major east-west Interstate Highway running through the south-central portion of the United States generally north of I-10, I-20 and I-30 but south of I-70. The western end is at I-15 in Barstow, California; its eastern end is at a concurrency of U.S. Route 117 (US 117) and North Carolina Highway 132 in Wilmington, North Carolina. It is the third-longest Interstate Highway in the United States, behind I-80 and I-90. Much of the western part of I-40, from Oklahoma City to Barstow parallels or overlays the historic US 66, east of Oklahoma City the route generally parallels US 64 and US 70. I-40 runs through or near many major cities including Albuquerque, New Mexico; Amarillo, Texas; Oklahoma City, Oklahoma; Little Rock, Arkansas; Memphis, Tennessee; Nashville, Tennessee; Knoxville, Tennessee; Greensboro, North Carolina; and Raleigh, North Carolina.
Interstate 69 (I-69) is an Interstate Highway in the United States currently consisting of seven disjointed parts with an original continuous segment from Indianapolis, Indiana, northeast to the Canada–US border in Port Huron, Michigan, at 355.8 miles (572.6 km). The remaining separated parts are variously completed and posted or unposted parts of an extension southwest to the Mexican border in Texas. Of this extension—nicknamed the NAFTA Superhighway because it would help trade with Canada and Mexico spurred by the North American Free Trade Agreement—five pieces near Corpus Christi, Houston, northwestern Mississippi, Memphis, and Evansville have been newly built or upgraded and signposted as I-69. A sixth segment of I-69 through Kentucky utilizing that state's existing parkway system and a section of I-24 was established by federal legislation in 2008, but only a portion is signposted. A section of the previously existing Western Kentucky Parkway from Eddyville to Nortonville was approved and signposted in late 2011, with the Pennyrile Parkway between Nortonville and Henderson being signed as I-69 in 2015, and the Purchase Parkway between Mayfield and Calvert City signed in July 2018. This brings the total length to about 720 miles (1,160 km).
U.S. Route 70 or U.S. Highway 70 is an east–west United States highway that runs for 2,381 miles (3,832 km) from eastern North Carolina to east-central Arizona. It is a major east–west highway of the Southeastern, Southern and Southwestern United States. It formerly ran from coast to coast, with the current Eastern terminus near the Atlantic Ocean in Atlantic, North Carolina, and the former Western terminus near the Pacific Ocean in Los Angeles, California. The current Western terminus is at US 60 / SR 77 in Globe, Arizona. Before the completion of the Interstate system, U.S. Highway 70 was sometimes referred to as the "Broadway of America", due to its status as one of the main east–west thoroughfares in the nation. It was also promoted as the "Treasure Trail" by the U.S. Highway 70 Association as of 1951.
U.S. Route 441 (US 441) is a 939-mile-long (1,511 km) auxiliary route of U.S. Route 41. It extends from US 41 in Miami, Florida to US 25W in Rocky Top, Tennessee. Between its termini, US 441 travels through the states of Florida, Georgia, North Carolina, and Tennessee. The highway acts as a connector between several major urban areas, including Miami, Orlando, Ocala, Gainesville, Athens, and Knoxville. It also crosses the Great Smoky Mountains National Park, where it meets the southwestern end of the Blue Ridge Parkway, and where no trucks or other commercial traffic are allowed.
Interstate 22 (I-22) is a 202.5-mile-long (325.9 km) Interstate Highway in the U.S. states of Mississippi and Alabama, connecting I-269 near Byhalia, Mississippi to I-65 near Birmingham, Alabama. I-22 is also Corridor X of the Appalachian Development Highway System. Designated in 2012, I-22 follows the route of the older U.S. Route 78. The freeway mainly spans rural areas and passes numerous small towns along its route, including Jasper, Winfield, and Hamilton, Alabama; and Fulton, Tupelo, New Albany, and Holly Springs, Mississippi.
Interstate 695 (I-695) is a 51.46-mile-long (82.82 km) full beltway Interstate Highway extending around Baltimore, Maryland, United States. I-695 is officially designated the McKeldin Beltway, but is colloquially referred to as either the Baltimore Beltway or 695. The route is an auxiliary route of I-95, intersecting that route southwest of Baltimore near Arbutus and northeast of the city near White Marsh. It also intersects other major roads radiating from the Baltimore area, including I-97 near Glen Burnie, the Baltimore–Washington Parkway near Linthicum, I-70 near Woodlawn, I-795 near Pikesville, and I-83 in the Timonium area. The 19.37-mile (31.17 km) portion of the Baltimore Beltway between I-95 northeast of Baltimore and I-97 south of Baltimore is officially MD 695, and is not part of the Interstate Highway System, but is signed as I-695. This section of the route includes the Francis Scott Key Bridge that crosses over the Patapsco River. The bridge and its approaches are maintained by the Maryland Transportation Authority (MDTA) while the remainder of the Baltimore Beltway is maintained by the Maryland State Highway Administration (MDSHA).
Interstate 840 (I-840), formerly State Route 840 (SR 840), also designated as Tennessee National Guard Parkway, is a loop interstate highway around Nashville, Tennessee, built by the Tennessee Department of Transportation (TDOT). First proposed by former Governor Lamar Alexander as part of a system of Bicentennial Parkways, construction began in 1991 and was completed in 2012. The freeway is 77.28 miles (124.37 km) long, and it serves the cities of Lebanon, Murfreesboro, Franklin, and Dickson.
Interstate 240 (I-240) is a 19.27-mile-long (31.01 km) Auxiliary Interstate Highway in the U.S. state of Tennessee. It forms a loop with its parent I-40 around the eastern neighborhoods of Memphis. It travels from an interchange with I-40 east of downtown to an interchange with I-40, US 79, and Sam Cooper Boulevard in East Memphis, providing access to Memphis International Airport and the eastern neighborhoods. The section in East Memphis around Walnut Grove Road is the busiest interstate in Tennessee, with an AADT of just under 200,000 vehicles. The western leg of I-240 has been approved to be signed as I-69.
U.S. Route 78 is an east–west United States highway that runs for 715 miles (1,151 km) from Memphis, Tennessee, to Charleston, South Carolina. From Byhalia, Mississippi to Birmingham, Alabama, US 78 is designated as Interstate 22. The highway's western terminus is at U.S. Route 64/U.S. Route 70/U.S. Route 79 in Memphis, Tennessee, and its eastern terminus is on Line Street, in Charleston, South Carolina. Ironically, one of its auxiliary routes, US 278, is actually longer in length than US 78.
Interstate 269 (I-269) is a beltway around the city of Memphis, Tennessee and its adjacent suburban areas in southwestern Tennessee and northern Mississippi, completed in October 2018. I-269 was planned and built to serve as an outer bypass for the Memphis metropolitan area, funneling through traffic around the metro area while also functioning as a bypass of future Interstate 69 (I-69), which will run directly through the center of the metro area. I-269 currently connects to its parent route, I-69, at an interchange in Hernando, MS and will do so again in Millington, TN in the future.
State Route 385 (SR 385) is the designation for two separate segments of state highway in the Memphis Metropolitan Area in Shelby county in West Tennessee, which with Interstate 269 (I-269) forms a semicircle around and through the Memphis suburbs.
Interstate 95 (I-95) in Maryland is a major highway that runs 109.01 miles (175.43 km) diagonally from northeast to southwest, from Maryland's border with Delaware, to the Woodrow Wilson Bridge, entering the District of Columbia and reaching Virginia. The route is one of the most traveled Interstate Highways in Maryland, especially between Baltimore and Washington, D.C., despite alternate routes along the corridor, such as the Baltimore-Washington Parkway, U.S. Route 1, and U.S. Route 29. Portions of the highway are tolled.
Interstate 40 (I-40) traverses the entirety of the state of Tennessee from west to east, running from the Mississippi River at the Arkansas border to the northern base of the Great Smoky Mountains at the North Carolina border. The road connects Tennessee's three largest cities—Memphis, Nashville, and Knoxville—and crosses all of Tennessee's physiographical provinces and Grand Divisions—the Mississippi Embayment and Gulf Coastal Plain in West Tennessee, the Highland Rim and Nashville Basin in Middle Tennessee, and the Cumberland Plateau, Appalachian Valley and Ridge Province, and Blue Ridge Province in East Tennessee. The Tennessee section of I-40 is 452 miles (727 km) long, the longest of any state.
The proposed Interstate 69 (I-69) extension from Indianapolis southwest to Texas currently has a short piece completed in the U.S. state of Mississippi, south of Memphis, Tennessee. The south end is an at-grade intersection with the former route of MS 304 near Tunica Resorts, where Mississippi Highway 713 continues west to U.S. Highway 61, and the route continues north to the Mississippi state line. Much of the route overlaps Mississippi Highway 304, which intersects US 61 farther north than MS 713. MS 304 continues east from I-55, connecting to State Route 385 in Tennessee, forming part of the Interstate 269 Memphis outer beltway.
Interstate 69 (I-69) is a proposed U.S. Interstate Highway that will pass through the western part of the U.S. state of Tennessee, serving the cities of Union City, Dyersburg, and Memphis. State officials have considered building parts of I-69 as a toll road. Currently, a 21-mile (34 km) section of already-existing freeway in Memphis has been approved for the I-69 designation. A section near Union City is under construction.
U.S. Route 70 enters the state of Tennessee from Arkansas via the Memphis & Arkansas Bridge in Memphis, and runs west to east across 21 counties in all three grand divisions of Tennessee, with a total length of 478.48 miles (770.04 km), to end at the North Carolina state line in eastern Cocke County. Along the route, US 70 is accompanied with various U.S. and state highways, including those in three of the state's four major cities.
In Tennessee, U.S. Route 64 stretches from the Mississippi River in Memphis to the North Carolina state line near Ducktown. The highway, along with US 72, is a major route for travel between Memphis and Chattanooga.
The roads in Nashville, Tennessee include Interstates 24, 65 and 40, with interchanges near the city center. There are nine U.S. highways serving the city. Two beltways surround Nashville.
The roads in Knoxville, Tennessee, include Interstate 40 (I-40), I-75, I-275, and I-640 with interchanges near the city center. There are eight U.S. Highways serving the city. One beltway surrounds Knoxville within the city, plus an additional Interstate spur serving the city's western outskirts.
