List of intrastate Interstate Highways

The following table shows the list of Intrastate primary Interstate Highways.

Number	Length (mi)	State	Notes
Interstate 2	46.8	Texas	Unfinished, planning to extend west to Laredo, TX
Interstate 4	132.3	Florida	Finished
Interstate 7	TBD	California	Fictional
Interstate 11	22.85	Nevada	Unfinished, planning to extend south to Tucson, AZ, north to Reno, NV
Interstate 12	85.6	Louisiana	Finished
Interstate 14	25.1	Texas	Unfinished, planning to extend west to NM east to GA
Interstate 16	166.81	Georgia	Finished
Interstate 17	145.76	Arizona	Finished
Interstate 18	TBD	California	Fictional; if real, become the longest Interstate located in a state, beating NY's I-87
Interstate 19	63.35	Arizona	Finished
Interstate 27	124.13	Texas	Finished
Interstate 37	143	Texas	Finished
Interstate 43	191.55	Wisconsin	Finished
Interstate 45	284.91	Texas	Finished; only of the Interstates ending in 5 to be located in a state, and the shortest major interstate highway
Interstate 47	247.20	Michigan	Fictional
Interstate 49	238.26	Louisiana	Unfinished, planning to extend north to Kansas City, MO
Interstate 73	101.1	North Carolina	Unfinished, planning to extend south to Myrtle Beach, SC north to upper MI's Lower Peninsula
Interstate 86 (western)	62.75	Idaho	Finished
Interstate 87 (southern)	12	North Carolina	Unfinished, planning to extend northeast to Norfolk, VA, currently the shortest Interstate Highway
Interstate 87 (northern)	333.49	New York	Finished; the longest Interstate located in a state
Interstate 88 (western)	140.6	Illinois	Finished
Interstate 88 (eastern)	117.75	New York	Finished
Interstate 96	192.06	Michigan	Finished
Interstate 97	17.62	Maryland	Finished; if NC's I-87 is complete, will again be the shortest Interstate Highway
Interstate 99	98.86	Pennsylvania	Unfinished, planning to extend north to south-central NY State

Interstate Highway System

Signed											1 • 2 • 3 • 4 • 5 • 7 • 8 • 9 • 10 • 11 • 12 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 23 • 24 • 25 • 26 • 27 • 29 • 30 • 35 • 37 • 39 • 40 • 41 • 42 • 43 • 44 • 45 • 47 • 48 • 49 • 50 • 53 • 55 • 57 • 59 • 60 • 64 • 65 • 66 • 68 • 69 • 70 • 71 • 72 • 73 • 74 • 75 • 76 (CO–NE • OH–NJ) • 77 • 78 • 79 • 80 • 81 • 82 • 83 • 84 (OR–UT • PA–MA) • 85 • 86 (ID • PA–NY) • 87 (NC • NY) • 88 (IL • NY) • 89 • 90 • 91 • 92 • 93 • 94 • 95 • 96 • 97 • 98 • 99 • 101 • H-1 • H-2 • H-3

Unsigned											A-1 • A-2 • A-3 • A-4 • PR-1 • PR-2 • PR-3

Lists											Primary • Auxiliary • Intrastate • Suffixed • Business • Future • Former • Hypothetical (Auxiliary • Business)

Other											Standards • Intrastate • Temporary • Bypassed • Gaps • Tolled

Major Interstates are written in bold.