The largest U.S. interstate highway is I-90, also known as the "Dwight D. Eisenhower National System of Interstate and Defense Highways." It stretches nearly 3,100 miles from Seattle, Washington, to Boston, Massachusetts, making it the longest interstate highway in the United States.
The interstate highway system was designed to be used as military runways.
Late 1950s under president Eisenhower. The full name of the system is "The National Defense and Interstate Highway System".
Dwight Eisenhower
Signage is the only reliable way to tell. State highways will have a state highway sign (what that looks like varies from state to state), while interstate highways will have the blue and red interstate shield.
your heart
In the US, Interstate 90 is the largest highway spanning from Seattle to Boston
1956 Interstate Highway
Interstate 70, Interstate 76, Interstate 25, US Highway 50, US Highway 24, US Highway 85, US Highway 87, US Highway 287, US Highway 40, Colorado Route 9... those are some of your major thoroughfares.
The US Interstate Highway that runs through Helena, Montana is Interstate 15.
The US Interstate highway which connects Kalamazoo, MI to Stevensville, MI is Interstate 94.
As of 2012, the US interstate highway system includes almost 50,000 miles.
Dwight Eisenhower was President of the US when the Interstate highway system was formed.
Longest interstate highway is I-90.
US Interstate 30 is the highway that connects Texarkana, Arkansas to Arkedelphia, Arkansas.
US Interstate highway 135 connects Salina Kansas to Newton Kansas.
Interstate 70 is the US highway that connects Brewster, KS to Salina, KS.
interstate 80.