U.S. Route 66 or U.S. Highway 66 was one of the original highways in the United States Numbered Highway System. It was established on November 11, 1926, with road signs erected the following year. The highway, which became one of the most famous roads in the United States, ran from Chicago, Illinois, through Missouri, Kansas, Oklahoma, Texas, New Mexico, and Arizona before terminating in Santa Monica in Los Angeles County, California, covering a total of 2,448 miles (3,940 km).
Interstate 55 (I-55) is a major Interstate Highway in the central United States. As with most primary Interstates that end in a five, it is a major cross-country, north–south route, connecting the Gulf of Mexico to the Great Lakes. The highway travels from LaPlace, Louisiana, at I-10 to Chicago, Illinois, at U.S. Route 41, at McCormick Place. The major cities that I-55 connects to are New Orleans, Louisiana; Jackson, Mississippi; Memphis, Tennessee; St. Louis, Missouri; and Chicago, Illinois.
Interstate 44 (I-44) is an Interstate Highway in the central United States. Although it is nominally an east–west road as it is even-numbered, it follows a more southwest–northeast alignment. Its western terminus is in Wichita Falls, Texas, at a concurrency with U.S. Route 277 (US 277), US 281, and US 287; its eastern terminus is at I-70 in St. Louis, Missouri. I-44 is one of five Interstates built to bypass US 66; this highway covers the section between Oklahoma City and St. Louis. Virtually the entire length of I-44 east of Springfield, Missouri, was once US 66, which was upgraded from two to four lanes from 1949 to 1955. The section of I-44 west of Springfield was built farther south than US 66 in order to connect Missouri's section with the already completed Will Rogers Turnpike, which Oklahoma wished to carry their part of I-44.
U.S. Route 40 or U.S. Highway 40 (US 40), also known as the Main Street of America, is a major east–west United States Highway traveling across the United States from the Mountain States to the Mid-Atlantic States. As with most routes whose numbers end in a zero, US 40 once traversed the entire United States. It is one of the first U.S. Highways created in 1926 and its original termini were in San Francisco, California, and Atlantic City, New Jersey. US 40 currently ends at a junction with I-80 in Silver Summit, Utah, just outside Salt Lake City. West of this point US 40 was functionally replaced with I-80, and as these segments of I-80 were constructed the western portion of US 40 was truncated several times.
U.S. Route 166 (US 166) is a 164-mile (264 km) east–west United States highway. This route and US 266 are the only two remaining spurs of historic U.S. Route 66, since US 666 was renumbered to US 491 in 2003.
Route 366 is a highway located completely within the St. Louis metropolitan area. It is primarily a former section of U.S. Route 66. Beginning at South Broadway/South Jefferson Avenue in St. Louis and ending at the Interstate 44/Interstate 270 interchange in Sunset Hills, it was established in 1979 when US 66 was decertified between Chicago, Illinois and Joplin, Missouri.
U.S. Route 66 is a former east–west United States Numbered Highway, running from Santa Monica, California to Chicago, Illinois. In Missouri, the highway ran from downtown St. Louis at the Mississippi River to the Kansas state line west of Joplin. The highway was originally Route 14 from St. Louis to Joplin and Route 1F from Joplin to Kansas. It underwent two major realignments and several lesser realignments in the cities of St. Louis, Springfield, and Joplin. Current highways covering several miles of the former highway include Route 100, Route 366, Route 266, Route 96, and Route 66. Interstate 44 (I-44) approximates much of US 66 between St. Louis and Springfield.
The historic U.S. Route 66, sometimes known as the Will Rogers Highway after Oklahoma native Will Rogers, ran from west to northeast across the state of Oklahoma, along the path now taken by Interstate 40 (I-40) and State Highway 66 (SH-66). It passed through Oklahoma City, Tulsa, and many smaller communities. West of the Oklahoma City area, it has been largely replaced by I-40; the few independent portions that are still state-maintained are now I-40 Business. However, from Oklahoma City northeast to Kansas, the bypassing I-44 is mostly a toll road, and SH-66 remains as a free alternate.
U.S. Route 66 was a United States Numbered Highway in Illinois that connected St. Louis, Missouri, and Chicago, Illinois. The historic Route 66, the Mother Road or Main Street of America, took long distance automobile travelers from Chicago to Southern California. The highway had previously been Illinois Route 4 and the road has now been largely replaced with Interstate 55 (I-55). Parts of the road still carry traffic and six separate portions of the roadbed have been listed on the National Register of Historic Places.
Nine business routes of Interstate 44 (I-44) exist, all of them within the state of Missouri.
Interstate 44 (I-44) in the US state of Missouri runs northeast from the Oklahoma state line near Joplin to I-70 in Downtown St. Louis. It runs for about 293 miles (472 km) in the state, and is the longest Interstate Highway in the state.
A total of ten special routes of U.S. Route 71 exist, and another ten previously existed.
U.S. Route 60 has 25 current special routes. Of these, 20 are business routes, two alternate routes, one bypass route, and one truck route. US 60 has also had one additional business route, an additional bypass route, a temporary route, and another truck route.
Several special routes of U.S. Route 40 exist. In order from west to east they are as follows.
Numerous special routes of U.S. Route 67, all business routes, exist. One other route, formerly an alternate route in western Illinois, has since been downgraded to state Route 267.
Several special routes of U.S. Route 30 exist. In order from west to east they are as follows.
Several special routes of U.S. Route 20 (US 20) exist. In order from west to east, they are as follows.
Several special routes of U.S. Route 54 exist, from Texas to Missouri. In order from southwest to northeast, separated by type, they are as follows.
U.S. Route 67 is the portion of a north-south highway in Missouri that starts at the Arkansas state line south of Neelyville and ends at the Illinois state line northeast of West Alton.
Several special routes of U.S. Route 50 exist. In order from west to east they are as follows.
