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There are 70 primary interstate highways in the 48 contiguous United States as well as five former and one future primary interstate highways. This number does not include auxiliary Interstate Highways . Serves six states: Texas, Mississippi, Kentucky, Indiana, Michigan. Planned/started in 3 more: Louisiana, Arkansas, Tennessee.
- June 29, 1956
- Interstate X (I-X)
Dec 21, 2023 · Stacker compiled a list of the longest interstates in the United States using 2021 data from the Federal Highway Administration. Read on to find out which ones are the lengthiest.
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Longest road in the United States. Ruta Nacional 40: 5,194 km (3,227 mi) Argentina: Cape Virgenes, Santa Cruz Province, Argentina: La Quiaca, Provincia de Jujuy: At km 4601 is the highest road outside the Himalayas with 5000 msal and the longest in South America. Interstate 90: 4,861 km (3,020 mi) United States: Seattle, Washington: Boston ...
The sign used to mark an interstate. Primary Interstate Highways are the major interstate highways of the United States and have a one or two-digit route number. Even (0, 2, 4, 6, or 8) route numbers are given to east/west routes, with the smaller numbered routes in the south and bigger numbered routes in the north .
Feb 23, 2024 · Interstate 80 is the second-longest Interstate Highway (after Interstate 90). Some of the major cities it runs through include Oakland, California; Reno, Nevada, and Salt Lake City, Utah. It also passes within 10 miles of Chicago, Cleveland, and New York City. This interstate had the most split routes of any interstate highway in the US. It ...
In the United States, each state maintains its own system of state highways. [a] This is a list of the longest state highways in each state. As of 2007, the longest state highway in the nation is Montana Highway 200, which is 706.624 miles (1,137.201 km) long. The shortest of the longest state highways is District of Columbia Route 295, which ...
Main Routes of the Dwight D. Eisenhower National System of Interstate and Defense Highways as of December 31, 2018. Table 2. Auxiliary Routes of the Dwight D. Eisenhower National System of Interstate and Defense Highways as of December 31, 2018. Table 3. Interstate Routes in Each of the 50 States, District of Columbia and Puerto Rico. Table 4.
