The routing of interstate highways in the United States is primarily determined by the Federal Highway Administration (FHWA), which operates under the U.S. Department of Transportation. State transportation agencies also play a significant role in the decision-making process, as they assess local needs and conditions. Planning typically involves collaboration between federal, state, and local officials, with public input and environmental considerations influencing the final routes. Ultimately, the decision is based on a combination of factors including traffic demand, economic benefits, and community impact.
interstate
There is no shared interstate that goes through both states.
No, but it goes through the most states (15). The longest is interstate 90.
Interstate 4 goes from Tampa to Orlando.
Interstate 81 goes south to its southern terminus in Tennessee where it connects with Interstate 40.
Interstate 10 is a highway that goes from east to west. It is a little more south of Route 66.
Interstate 40 goes in east - west direction.
I-39
I-10
West Virginia.
Interstate 2 (I-2) is 48 miles long and goes from Mission,Texas to Harlingen,Texas.
Interstate Highway 10.