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Table 3
Interstate Routes in Each of the 50 States, District of Columbia, and Puerto Rico

State Interstate
Route		 Total Miles Net Miles Howard-
Cramer
Miles		 Sections
103(c)(4)(A)
Miles		 ISTEA
Miles		 Overlap
Miles &		 Route
Alabama I-10 66.31 66.31 - - - - -
I-20 214.70 84.60 - - - 130.10 I-59
I-59 241.36 241.36 - - - - -
I-65 367.00 367.00 - - - - -
I-85 80.00 80.00 - - - - -
I-165 4.90 4.90 - - - - -
I-359 2.30 2.30 - - - - -
I-459 32.80 32.80 - - - - -
I-565 21.40 21.40 - - - - -
I-759 4.50 4.50 - - - - -
10 Routes 1,035.27 905.17 0.00 0.00 0.00 130.10  
Alaska A-1 408.23 408.23 - 408.23 - - -
A-2 202.18 202.18 - 202.18 - - -
A-3 148.12 148.12 - 148.12 - - -
A-4 323.69 323.69 - 323.69 - - -
4 Routes 1,082.22 1,082.22 0.00 1,082.22 0.00 0.00  
Arizona I-8 178.33 178.33 - - - - -
I-10 392.33 392.33 - - - - -
I-15 29.39 29.39 - - - - -
I-17 145.76 145.76 - - - - -
I-19 63.35 63.35 - - - - -
I-40 359.48 359.48 - - - - -
6 Routes 1,168.64 1,168.64 0.00 0.00 0.00 0.00  
Arkansas I-30 143.02 143.02 - - - - -
I-40 284.69 284.69 - - - - -
I-55 72.22 70.00 - - - 2.22 I-40
I-430 12.93 12.93 - - - - -
I-440 9.96 9.96 - 9.96 - - -
I-530 46.65 46.65 - 46.65 - - -
I-540 80.72 80.72 - 5.97 66.70 - -
I-630 7.40 7.40 - - - - -
8 Routes 657.59 655.37 0.00 62.58 66.70 2.22  
California I-5 796.53 796.53 - - - - -
I-8 169.92 169.92 - - - - -
I-10 242.54 240.94 - - - 1.60 I-5
I-15 287.26 287.26 - - - - -
I-40 154.61 154.61 - - - - -
I-80 199.24 199.24 - - - - -
I-105 17.32 17.32 7.00 - - - -
I-110 20.43 20.43 - - - - -
I-205 12.97 12.97 - - - - -
I-210 48.72 48.72 - - - - -
I-215 54.50 54.50 - 54.50 - - -
I-238 2.23 2.23 - 2.23 - - -
I-280 57.22 57.22 - - - - -
I-305 8.44 8.44 - - - - -
I-380 3.30 3.30 - - - - -
I-405 72.15 72.15 - - - - -
I-505 32.98 32.98 - - - - -
I-580 75.63 75.63 - 7.30 - - -
I-605 27.40 27.40 - - - - -
I-680 70.52 70.52 - 12.50 - - -
I-710 19.66 19.66 - 19.66 - - -
I-780 6.50 6.50 - - - - -
I-805 28.02 28.02 - - - - -
I-880 47.22 47.22 - 47.22 - - -
I-980 2.03 2.03 - 1.00 - - -
25 Routes 2,457.34 2,455.74 7.00 144.41 0.00 1.60  
Colorado I-25 299.70 299.70 - - - - -
I-70 451.04 451.04 - - - - -
I-76 184.86 184.86 - - - - -
I-225 12.00 12.00 - - - - -
I-270 5.31 5.31 - - - - -
5 Routes 952.91 952.91 0.00 0.00 0.00 0.00  
Connecticut I-84 97.90 97.90 - - - - -
I-91 58.00 58.00 - - - - -
I-95 111.57 111.57 - - - - -
I-291 6.02 6.02 - - - - -
I-384 8.20 8.20 - - - - -
I-395 54.69 54.69 - 54.69 - - -
I-684 1.41 1.41 - - - - -
I-691 8.38 8.38 6.69 - - - -
8 Routes 346.17 346.17 6.69 54.69 0.00 0.00  
Delaware I-95 23.43 23.43 - - - - -
I-295 5.71 5.71 - - - - -
I-495 11.47 11.47 - - - - -
3 Routes 40.61 40.61 0.00 0.00 0.00 0.00  
Dist. of Col. I-66 1.48 1.48 - - - - -
I-95 0.11 0.11 - - - - -
I-295 7.25 7.25 - - - - -
I-395 3.48 3.48 - - - - -
I-695 1.39 1.39 - - - - -
5 Routes 13.71 13.71 0.00 0.00 0.00 0.00  
Florida I-4 132.30 132.30 - - - - -
I-10 362.28 362.28 - - - - -
I-75 470.88 470.88 46.31 - - - -
I-95 382.15 382.15 - - - - -
I-110 6.94 6.94 - - - - -
I-175 1.44 1.44 - 1.44 - - -
I-195 4.42 4.42 - - - - -
I-275 60.64 60.64 - - - - -
I-295 35.51 35.51 - - - - -
I-375 1.34 1.34 - 1.34 - - -
I-395 1.29 1.29 - - - - -
I-595 12.86 12.86 - 8.80 - - -
12 Routes 1,472.05 1,472.05 46.31 11.58 0.00 0.00  
Georgia I-16 166.81 166.81 - - - - -
I-20 202.61 202.61 - - - - -
I-24 4.10 4.10 - - - - -
I-59 20.67 20.67 - - - - -
I-75 355.11 355.11 - - - - -
I-85 179.90 171.90 - - - 8.00 I-75
I-95 112.00 112.00 - - - - -
I-185 49.30 49.30 - 5.50 - - -
I-285 63.98 62.77 - - - 1.21 I-85
I-475 15.83 15.83 - - - - -
I-516 6.49 6.49 - 6.49 - - -
I-520 10.34 10.34 9.11 - - - -
I-575 30.97 30.97 29.16 - - - -
I-675 11.04 11.04 7.78 - - - -
I-985 24.04 24.04 - 24.04 - - -
15 Routes 1,253.19 1,243.98 46.05 36.03 0.00 9.21  
Hawaii H-1 27.16 27.16 - - - - -
H-2 8.33 8.33 - - - - -
H-3 15.32 15.32 - - - - -
H-201 4.10 4.10 - 4.10 - - -
4 Routes 54.91 54.91 0.00 4.10 0.00 0.00  
Idaho I-15 196.00 196.00 - - - - -
I-84 275.74 275.74 - - - - -
I-86 62.85 62.85 - - - - -
I-90 73.55 73.55 - - - - -
I-184 3.62 3.62 - - - - -
5 Routes 611.76 611.76 0.00 0.00 0.00 0.00  
Illinois I-24 38.73 38.73 - - - - -
I-39 123.42 123.42 - 123.42 - - -
I-55 313.08 294.38 - - - 18.70 I-70
I-57 364.16 358.57 - - - 5.59 I-70
I-64 128.12 123.98 - - - 4.14 I-57
I-70 135.94 135.94 - - - - -
I-72 177.25 177.25 - 99.10 - - -
I-74 220.34 214.45 - - - 5.89 I-55
I-80 163.52 163.52 - - - - -
I-88 140.60 140.60 - 140.60 - - -
I-90 123.89 108.50 - 16.71 - 15.39 I-94
I-94 61.53 59.05 - - - 2.48 I-80
I-155 32.13 32.13 - 32.13 - - -
I-172 19.69 19.69 - 19.69 - - -
I-180 13.19 13.19 - - - - -
I-190 3.07 3.07 - 3.07 - - -
I-255 27.05 27.05 - - - - -
I-270 14.97 14.97 - - - - -
I-280 17.60 8.21 - - - 9.39 I-74
I-290 29.84 29.84 - - - - -
I-294 53.42 48.10 - - - 5.32 I-80
I-355 20.01 20.01 - 20.01 - - -
I-474 14.88 14.88 - - - - -
23 Routes 2,236.43 2,169.53 0.00 454.73 0.00 66.90  
Indiana I-64 123.33 123.33 - - - - -
I-65 261.27 261.27 - - - - -
I-69 157.30 157.30 - - - - -
I-70 156.60 154.47 - - - 2.13 I-65
I-74 171.54 150.94 - - - 20.60 I-465
I-80 151.56 151.56 - - - - -
I-90 156.28 20.68 - - - 135.60 I-80
I-94 46.13 30.08 - - - 16.05 I-80
I-164 21.24 21.24 - - - - -
I-265 6.73 6.73 - - - - -
I-275 3.16 3.16 - - - - -
I-465 57.51 57.51 - 5.03 - - -
I-469 30.83 30.83 - 30.83 - - -
13 Routes 1,343.48 1,169.10 0.00 35.86 0.00 174.38  
Iowa I-29 154.75 151.75 - - - 3.00 I-80
I-35 218.33 218.33 - - - - -
I-74 5.36 5.36 - - - - -
I-80 303.23 288.94 - - - 14.29 I-35
I-129 0.27 0.27 - - - - -
I-235 13.78 13.78 - - - - -
I-280 9.38 9.38 - - - - -
I-380 73.05 73.05 - - - - -
I-480 0.75 0.75 - - - - -
I-680 29.54 19.63 - - - 9.91 I-29
10 Routes 808.44 781.24 0.00 0.00 0.00 27.20  
Kansas I-35 235.51 235.51 - - - - -
I-70 424.15 424.15 - - - - -
I-135 95.74 95.74 - - - - -
I-235 16.52 16.52 - - - - -
I-335 50.13 50.13 - 50.13 - - -
I-435 28.03 28.03 - - - - -
I-470 13.72 13.72 - - - - -
I-635 8.90 8.90 - - - - -
I-670 1.64 1.64 - - - - -
9 Routes 874.34 874.34 0.00 50.13 0.00 0.00  
Kentucky I-24 93.37 93.37 - - - - -
I-64 185.20 185.20 - - - - -
I-65 137.32 137.32 - - - - -
I-71 97.42 77.72 - - - 19.70 I-75
I-75 191.78 191.78 - - - - -
I-264 22.93 22.93 - - - - -
I-265 24.48 24.48 - 21.20 - - -
I-275 24.58 24.58 - - - - -
I-471 5.02 5.02 - - - - -
9 Routes 782.10 762.40 0.00 21.20 0.00 19.70  
Louisiana I-10 274.42 274.42 - - - - -
I-12 85.59 85.59 - - - - -
I-20 189.87 189.87 - - - - -
I-49 208.25 208.25 153.18 19.55 - - -
I-55 65.81 65.81 - - - - -
I-59 11.48 11.48 - - - - -
I-110 8.89 8.89 - - - - -
I-210 12.40 12.40 - - - - -
I-220 17.62 17.62 - - - - -
I-310 11.25 11.25 - - - - -
I-510 3.04 3.04 - - - - -
I-610 4.52 4.52 - - - - -
I-910 9.70 9.70 - - 9.70 - -
13 Routes 902.84 902.84 153.18 19.55 9.70 0.00  
Maine I-95 298.51 298.51 - - - - -
I-195 1.55 1.55 - - - - -
I-295 11.02 11.02 - - - - -
I-395 4.99 4.99 - - - - -
I-495 50.47 50.47 - 50.47 - - -
5 Routes 366.54 366.54 0.00 50.47 0.00 0.00  
Maryland I-68 81.09 81.09 - 81.09 - - -
I-70 93.62 93.62 - - - - -
I-81 12.08 12.08 - - - - -
I-83 34.50 34.50 - - - - -
I-95 110.01 110.01 - - - - -
I-97 17.62 17.62 14.90 - - - -
I-195 4.71 4.71 2.20 1.40 - - -
I-270 34.40 34.40 - - - - -
I-295 0.80 0.80 - - - - -
I-370 3.13 3.13 1.18 - - - -
I-395 1.98 1.98 - - - - -
I-495 16.13 16.13 - - - - -
I-595 19.97 19.97 19.31 - - - -
I-695 30.57 30.57 - 2.20 - - -
I-795 8.99 8.99 - 5.47 - - -
I-895 11.44 11.44 - - - - -
16 Routes 481.04 481.04 37.59 90.16 0.00 0.00  
Massachusetts I-84 8.15 8.15 - - - - -
I-90 135.72 135.72 - 2.90 - - -
I-91 54.99 54.99 - - - - -
I-93 47.07 47.07 - 14.10 - - -
I-95 91.95 91.95 - 37.54 - - -
I-190 19.26 19.26 - - - - -
I-195 40.73 40.73 - 14.28 - - -
I-290 20.16 20.16 - - - - -
I-291 5.44 5.44 - - - - -
I-295 4.23 4.23 - - - - -
I-391 4.46 4.46 - - - - -
I-395 11.91 11.91 - 11.91 - - -
I-495 121.56 121.56 12.90 18.50 - - -
13 Routes 565.63 565.63 12.90 99.23 0.00 0.00  
Michigan I-69 198.51 193.31 - 66.80 - 5.20 I-96
I-75 395.54 395.54 - - - - -
I-94 275.49 275.49 - - - - -
I-96 192.06 192.06 - - - - -
I-194 3.38 3.38 - - - - -
I-196 80.65 80.65 - - - - -
I-275 29.97 29.97 - - - - -
I-296 3.43 3.43 - - - - -
I-375 1.06 1.06 - - - - -
I-475 16.99 16.99 - - - - -
I-496 11.78 11.78 - - - - -
I-675 7.72 7.72 - - - - -
I-696 29.39 29.39 - - - - -
13 Routes 1,245.97 1,240.77 0.00 66.80 0.00 5.20  
Minnesota I-35 259.69 220.46 - - - 39.23 I-35E
I-35E 39.34 39.34 - - - - -
I-35W 41.78 41.78 - - - - -
I-90 275.70 275.70 - - - - -
I-94 259.49 259.22 - - - 0.27 I-35E
I-394 9.75 9.75 - - - - -
I-494 42.94 42.94 - - - - -
I-535 1.57 1.57 - - - - -
I-694 22.62 21.97 - - - 0.65 I-35E
9 Routes 952.88 912.73 0.00 0.00 0.00 40.15  
Mississippi I-10 77.19 77.19 - - - - -
I-20 154.61 129.41 - - - 25.20 I-55/59
I-55 290.41 290.41 - - - - -
I-59 171.72 171.72 - - - - -
I-110 4.10 4.10 - - - - -
I-220 12.01 12.01 - - - - -
6 Routes 710.04 684.84 0.00 0.00 0.00 25.20  
Missouri I-29 130.72 125.22 - - - 5.50 I-35/40
I-35 114.74 113.74 - - - 1.00 I-70
I-44 290.49 290.49 - - - - -
I-55 210.45 209.45 - - - 1.00 I-44
I-57 21.96 21.96 - - - - -
I-64 14.69 14.69 - 14.69 - - -
I-70 251.66 251.66 - - - - -
I-72 2.04 2.04 - 2.04 - - -
I-155 10.84 10.84 - - - - -
I-170 11.17 11.17 - 4.29 - - -
I-229 14.97 14.97 - - - - -
I-255 3.77 3.77 - - - - -
I-270 35.62 35.62 - - - - -
I-435 52.78 52.78 - - - - -
I-470 16.72 16.72 - - - - -
I-635 3.77 3.77 - - - - -
I-670 1.17 1.17 - - - - -
17 Routes 1,187.56 1,180.06 0.00 21.02 0.00 7.50  
Montana I-15 396.03 396.03 - - - - -
I-90 551.68 544.03 - - - 7.65 I-15
I-94 249.15 249.15 - - - - -
I-115 1.19 1.19 - - - - -
I-315 0.83 0.83 - - - - -
5 Routes 1,198.88 1,191.23 0.00 0.00 0.00 7.65  
Nebraska I-76 2.48 2.48 - - - - -
I-80 455.32 455.32 - - - - -
I-129 3.21 3.21 - - - - -
I-180 3.18 3.18 - - - - -
I-480 4.15 4.15 - - - - -
I-680 13.32 13.32 - - - - -
6 Routes 481.66 481.66 0 0 0 0  
Nevada I-15 123.77 123.77 - - - - -
I-80 410.67 410.67 - - - - -
I-515 20.54 20.54 - 14.90 - - -
I-580 4.99 4.99 - 1.21 - - -
4 Routes 559.97 559.97 0 16.11 0 0  
New Hampshire I-89 60.87 60.87 - - - - -
I-93 131.78 131.78 - -