Interstates by State

This list breaks down the Interstate-Guide by states (and the District of Columbia) and includes current, former, future, and unsigned routes. Include is the total Interstate mileage for each state, district, commonwealth.

• Alabama | 905.17 mi.
• I-10, I-20, I-22, I-59, I-65, I-85
• I-210, I-222, I-422, I-359, I-459, I-759, I-165, I-565

• Alaska | 1,082.22 mi.
• I-A-1, I-A-2, I-A-3, I-A-4

• Arizona | 1,168.64 mi.
• I-8, I-10, I-15, I-17, I-19, I-40

• Arkansas | 655.37 mi.
• I-30, I-40, I-49, I-55, I-69
• I-130, I-430, I-530, I-630, I-440, I-540, I-555

• California | 2,455.74 mi.
• I-5, I-8, I-10, I-15, I-40, I-80
• I-105, I-205, I-305, I-405, I-505, I-605, I-805, I-905,
  I-110, I-210, I-710, I-215, I-238, I-280, I-380, I-580, I-680, I-780, I-880, I-980

• Colorado | 952.91 mi.
• I-25, I-70, I-76
• I-225, I-270

• Connecticut | 346.17 mi.
• I-84, I-91, I-95
• I-384, I-684, I-291, I-691, I-395

• Delaware | 40.61 mi.
• I-95
• I-295, I-495

• District of Columbia | 13.71 mi.
• I-66, I-95
• I-295, I-395, I-495, I-695

• Florida | 1,472.05 mi.
• I-4, I-10, I-75, I-95
• I-110, I-175, I-275, I-375, I-195, I-295, I-395, I-595, I-795

• Georgia | 1,243.98 mi.
• I-16, I-20, I-59, I-75, I-85, I-95
• I-516, I-420, I-520, I-475, I-575, I-675, I-185, I-285, I-485, I-985

• Hawaii | 54.91 mi.
• I-H1, I-H2, I-H3
• I-H201

• Idaho | 611.76 mi.
• I-15, I-84, I-86, I-90
• I-184

• Illinois | 2,169.53 mi.
• I-24, I-39, I-55, I-57, I-64, I-70, I-72, I-74, I-80, I-88, I-90, I-94
• I-155, I-255, I-355, I-270, I-172, I-474, I-180, I-280, I-190, I-290, I-294

• Indiana | 1,169.10 mi.
• I-64, I-65, I-69, I-70, I-74, I-80, I-90, I-94
• I-164, I-469, I-265, I-465, I-865, I-275

• Iowa | 781.24 mi.
• I-29, I-35, I-74, I-80
• I-129, I-235, I-280, I-380, I-480, I-680

• Kansas | 874.34 mi.
• I-35, I-70
• I-135, I-235, I-335, I-435, I-635, I-470, I-670

• Kentucky | 762.40 mi.
• I-24, I-64, I-65, I-66, I-69, I-71, I-75
• I-264, I-265, I-275, I-471

• Louisiana | 902.84 mi.
• I-10, I-12, I-20, I-49, I-55, I-59, I-69
• I-110, I-210, I-310, I-510, I-610, I-910, I-220

• Maine | 366.54 mi.
• I-95
• I-195, I-295, I-395, I-495

• Maryland | 481.04 mi.
• I-68, I-70, I-81, I-83, I-95, I-97
• I-170, I-270, I-370, I-195, I-295, I-395, I-495, I-595, I-695, I-795, I-895

• Massachusetts | 565.63 mi.
• I-84, I-90, I-91, I-93, I-95
• I-190, I-290, I-291, I-391, I-195, I-295, I-395, I-495

• Michigan | 1,240.77 mi.
• I-69, I-75, I-94, I-96
• I-275, I-375, I-475, I-675, I-194, I-196, I-296, I-496, I-696

• Minnesota | 912.73 mi.
• I-35, I-35E, I-35W, I-90, I-94
• I-535, I-394, I-494, I-694

• Mississippi | 684.84 mi.
• I-10, I-20, I-22, I-55, I-59, I-69
• I-110, I-310, I-220, I-269

• Missouri | 1,180.06 mi.
• I-29, I-35, I-44, I-49, I-55, I-57, I-66, I-70, I-72
• I-229, I-435, I-635, I-155, I-255, I-170, I-270, I-470, I-670

• Montana | 1,191.23 mi.
• I-15, I-90, I-94
• I-115, I-315

• Nebraska | 481.66 mi.
• I-76, I-80
• I-129, I-180, I-480, I-580, I-680

• Nevada | 559.97 mi.
• I-15, I-80
• I-215, I-515, I-580

• New Hampshire | 224.54 mi.
• I-89, I-93, I-95
• I-293, I-393

• New Jersey | 431.36 mi.
• I-76, I-78, I-80, I-95
• I-676, I-278, I-280, I-287, I-195, I-295, I-495

• New Mexico | 999.90 mi.
• I-10, I-25, I-40

• New York | 1,674.73 mi.
• I-78, I-81, I-84, I-86, I-87, I-88, I-90, I-95, I-99
• I-278, I-478, I-678, I-878, I-481, I-781, I-684, I-287, I-587, I-687, I-787, I-190
  I-290, I-390, I-490, I-590, I-690, I-790, I-890, I-990, I-295, I-495, I-695, I-895

• North Carolina | 1,014.78 mi.
• I-26, I-40, I-73, I-74, I-77, I-85, I-95
• I-140, I-240, I-440, I-540, I-840, I-274, I-277, I-285, I-485, I-785, I-295, I-795

• North Dakota | 571.13 mi.
• I-29, I-94
• I-194

• Ohio | 1,572.35 mi.
• I-70, I-71, I-74, I-75, I-76, I-77, I-80, I-90
• I-270, I-470, I-670, I-271, I-471
  I-275, I-475, I-675, I-277, I-280, I-480, I-680, I-490

• Oklahoma | 929.46 mi.
• I-35, I-40, I-44
• I-235, I-240, I-244, I-444

• Oregon | 727.41 mi.
• I-5, I-82, I-84
• I-105, I-205, I-405

• Pennsylvania | 1,759.34 mi.
• I-70, I-76, I-78, I-79, I-80, I-81, I-83, I-84, I-86, I-90, I-95, I-99
• I-176, I-276, I-376, I-476, I-576, I-676
  I-279, I-579, I-378, I-180, I-380, I-283, I-195

• Puerto Rico | 249.77 mi.
• I-PR-1, I-PR-2, I-PR-3

• Rhode Island | 68.53 mi.
• I-95
• I-195, I-295

• South Carolina | 846.58 mi.
• I-20, I-26, I-73, I-74, I-77, I-85, I-95
• I-126, I-526, I-185, I-385, I-585

• South Dakota | 678.31 mi.
• I-29, I-90
• I-229, I-190

• Tennessee | 1,073.99 mi.
• I-24, I-26, I-40, I-55, I-65, I-69, I-81
• I-124, I-140, I-240, I-440, I-640, I-840, I-155, I-265, I-269, I-275, I-475, I-181

• Texas | 3,233.45 mi.
• I-10, I-20, I-27, I-30, I-35, I-35E, I-35W, I-37, I-40, I-44, I-45, I-69
• I-110, I-410, I-610, I-820, I-635, I-345, I-69C, I-369

• Utah | 938.00 mi.
• I-15, I-70, I-80, I-84
• I-215

• Vermont | 320.22 mi.
• I-89, I-91, I-93
• I-189, I-289

• Virginia | 1,117.23 mi.
• I-64, I-66, I-73, I-77, I-81, I-85, I-95
• I-264, I-464, I-564, I-664, I-381, I-581, I-785, I-195, I-295, I-395, I-495, I-895

• Washington | 763.67 mi.
• I-5, I-82, I-90
• I-205, I-405, I-705, I-182

• West Virginia | 549.05 mi.
• I-64, I-66, I-68, I-70, I-73, I-77, I-79
• I-470

• Wisconsin | 741.80 mi.
• I-39, I-43, I-90, I-94
• I-535, I-794, I-894

• Wyoming | 913.60 mi.
• I-25, I-80, I-90
• I-180

Page Updated December 6, 2012.