Interstate 40
Overview
 
Interstate 40 is the third-longest major east–west Interstate Highway in the United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

, after I-90
Interstate 90
Interstate 90 is the longest Interstate Highway in the United States at . It is the northernmost coast-to-coast interstate, and parallels US 20 for the most part. Its western terminus is in Seattle, at Edgar Martinez Drive S. near Safeco Field and CenturyLink Field, and its eastern terminus is in...

 and I-80
Interstate 80
Interstate 80 is the second-longest Interstate Highway in the United States, following Interstate 90. It is a transcontinental artery running from downtown San Francisco, California to Teaneck, New Jersey in the New York City Metropolitan Area...

. Its western end is at Interstate 15
Interstate 15 in California
In the U.S. state of California, Interstate 15 is a major north–south route through the San Bernardino, Riverside, and San Diego Counties, and it has a length of in the state. It is a major thoroughfare for traffic between Southern California and Las Vegas, Nevada, as well as points beyond...

 in Barstow, California
Barstow, California
Barstow is a city in San Bernardino County, California, United States. The population was 22,639 at the 2010 census, up from 21,119 at the 2000 census. Barstow is located north of San Bernardino....

; its eastern end is at a concurrency
Concurrency (road)
A concurrency, overlap, or coincidence in a road network is an instance of one physical road bearing two or more different highway, motorway, or other route numbers...

 of U.S. Route 117
U.S. Route 117
U.S. Route 117 was a north–south US Highway that ran for from Norlina, North Carolina to Virginia. Established in 1927, US 117 traveled from Norlina, through the towns of Warrenton, Roanoke Rapids, and Murfreesboro; from there it went north into Virginia. In 1932, US 117 was removed from this...

 and North Carolina Highway 132 in Wilmington, North Carolina
Wilmington, North Carolina
Wilmington is a port city in and is the county seat of New Hanover County, North Carolina, United States. The population is 106,476 according to the 2010 Census, making it the eighth most populous city in the state of North Carolina...

. Much of the western part of I-40, from Oklahoma City
Oklahoma City, Oklahoma
Oklahoma City is the capital and the largest city in the state of Oklahoma. The county seat of Oklahoma County, the city ranks 31st among United States cities in population. The city's population, from the 2010 census, was 579,999, with a metro-area population of 1,252,987 . In 2010, the Oklahoma...

 to Barstow
Barstow, California
Barstow is a city in San Bernardino County, California, United States. The population was 22,639 at the 2010 census, up from 21,119 at the 2000 census. Barstow is located north of San Bernardino....

, parallels or overlays the historic U.S. Route 66
U.S. Route 66
U.S. Route 66 was a highway within the U.S. Highway System. One of the original U.S. highways, Route 66 was established on November 11, 1926 -- with road signs erected the following year...

. I-40 intersects with eight of the 10 primary north–south interstates (all except I-5
Interstate 5
Interstate 5 is the main Interstate Highway on the West Coast of the United States, running largely parallel to the Pacific Ocean coastline from Canada to Mexico . It serves some of the largest cities on the U.S...

 and I-45
Interstate 45
Interstate 45 is an intrastate Interstate Highway located entirely within the U.S. state of Texas. It connects the cities of Dallas and Houston, continuing southeast from Houston to Galveston over the Galveston Causeway to the Gulf of Mexico...

) and also with I-24
Interstate 24
Interstate 24 is an Interstate Highway in the Midwestern and Southeastern United States. It runs diagonally from Interstate 57 to Chattanooga, Tennessee, at Interstate 75....

, I-30
Interstate 30
Interstate 30 is an Interstate Highway in the southern United States. I-30 runs from Interstate 20 west of Fort Worth, Texas, northeast via Dallas, Texas, and Texarkana, Texas, to Interstate 40 in North Little Rock, Arkansas. The route parallels U.S. Route 67 except for the portion west of...

, I-44
Interstate 44
Interstate 44 is a major highway in the central United States. Its western terminus is in Wichita Falls, Texas at a concurrency with US 277, US 281 and US 287; its eastern terminus is at the Illinois state line on the Poplar Street Bridge over the Mississippi River in St...

, I-77
Interstate 77
Interstate 77 is an Interstate Highway in the eastern United States. It traverses diverse terrain, from the mountainous state of West Virginia to the rolling farmlands of North Carolina and Ohio. It largely supplants the old U.S...

, and I-81
Interstate 81
Interstate 81 is an Interstate Highway in the eastern part of the United States. Its southern terminus is at Interstate 40 in Dandridge, Tennessee; its northern terminus is on Wellesley Island at the Canadian border, where the Thousand Islands Bridge connects it to Highway 401, the main freeway...

.
|-
|CA
Interstate 40 in California
In the U.S. state of California, Interstate 40 has its western terminus in Barstow. Known as the Needles Freeway, a major east–west route of the Interstate Highway System, it heads east from Barstow across the Mojave Desert in San Bernardino County past the Clipper Mountains to Needles,...

 || 154.61 || 248.82
|-
|AZ
Interstate 40 in Arizona
Interstate 40 is an east–west Interstate Highway that has a section in the U.S. state of Arizona connecting sections in California to New Mexico. It enters Arizona from the west at a crossing of the Colorado River southwest of Kingman...

 || 359.48 || 578.53
|-
|NM
Interstate 40 in New Mexico
Interstate 40, a major east–west route of the Interstate Highway System, runs east–west through Albuquerque in the U.S. state of New Mexico. It is the direct replacement for the historic U.S...

 || 373.51 || 601.11
|-
|TX
Interstate 40 in Texas
In the U.S. state of Texas, Interstate 40 runs east–west through the panhandle in the northwest part of the state. The only large city it passes through is Amarillo, where it meets the north end of Interstate 27.-History:...

 || 177.10 || 285.11
|-
|OK
Interstate 40 in Oklahoma
Interstate 40 is an Interstate Highway in Oklahoma that runs 331 miles across the state from Texas to Arkansas. West of Oklahoma City, it parallels and replaces Old US-66, and east of Oklahoma City, it parallels US-62, US-266 and US-64.Cities along the route include Erick, Sayre, Elk City,...

 || 331.03 || 532.74
|-
|AR
Interstate 40 in Arkansas
Interstate 40 is an east–west Interstate Highway that has a section in the U.S. state of Arkansas connecting sections in Oklahoma to Tennessee. The route enters Arkansas from the west just north of the Arkansas River near Dora...

 || 284.69 || 458.16
|-
|TN
Interstate 40 in Tennessee
In the state of Tennessee, Interstate 40 traverses the entirety of the state 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...

 || 455.28 || 732.70
|-
|NC
Interstate 40 in North Carolina
Interstate 40 runs through the state of North Carolina from the Tennessee state line in the west to its eastern terminus in Wilmington.-Pigeon River Gorge:...

 || 423.55 || 681.64
|-
|Total || 2,559.25 || 4,118.71
|}
Interstate 40 is a major east–west route of the Interstate Highway System
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...

.
 
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