interstate highway
US /ˈɪntərsteɪt ˈhaɪweɪ/
UK /ˈɪntərsteɪt ˈhaɪweɪ/

1.
carretera interestatal, autopista
a major divided highway with controlled access, connecting two or more states, part of the U.S. Interstate Highway System
:
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We took the interstate highway to get to the next city quickly.
Tomamos la carretera interestatal para llegar rápidamente a la siguiente ciudad.
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Construction on the new interstate highway is expected to be completed next year.
Se espera que la construcción de la nueva carretera interestatal esté terminada el próximo año.