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Intrastate Interstate Highways

Map of the United States showing Intrastate Interstate Highways with interstate shields and lines highlighted in red.

Intrastate Interstate Highways or Intrastate U.S. Highways are either of those highways in the Interstate Highway System or the U.S. Highway System located entirely within one U.S. state, having their whole length in one state, and does not have even 1 inch passing to another state.

Interstate Highways[]

U.S. Highways[]

I-Blank (CA)
Interstate Highway System
I-Blank
Signed 12345789101112141516171819202122232425262729303537394041424344454748495053555759606465666869707172737475 • 76 (CO–NEOH–NJ) • 77787980818283 • 84 (OR–UTPA–MA) • 85 • 86 (IDPA–NY) • 87 (NCNY) • 88 (ILNY) • 8990919293949596979899101H-1H-2H-3
Unsigned A-1A-2A-3A-4PR-1PR-2PR-3
Lists PrimaryAuxiliaryIntrastateSuffixedBusinessFutureFormerHypothetical (AuxiliaryBusiness)
Other StandardsIntrastateTemporaryBypassedGapsTolled
Major Interstates are written in bold.
US Blank (CA)
U.S. Highway System
US Blank
1234567891011121314151617181920212223242526272829303132333435363738394041424344454647 • 48 (CAWV–MDWV–VA) • 4950515253545556575859606162636465666768697071727374757677787980818283848586878889909192939495 • 96 (1926–19391939–Current) • 979899101163400412425
Primary routesAuxiliary routesDivided routesSpecial routesIntrastate routesFormer routesIntrastateHypothetical (AuxiliarySpecial)
Major U.S Routes are written in bold. Former U.S. Routes that are no longer part of the system are written in italic.
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