| Region | Interstate-Rural | Other Pri Art-Rural | Minor Art-Rural | Major Coll-Rural | Minor Coll-Rural | Local-Rural | Interstate-Urban | Freeway-Urban | Other Pri Art-Urban | Minor Art-Urban | Collector-Urban | Local-Urban | Total Centerline Miles |
| 1 | 233.898 | 345.972 | 503.875 | 71.677 | 66.446 | 20.120 | 28.382 | 40.999 | 46.990 | 11.556 | 0.000 | 0.000 | 1,369.92 |
| 2 | 106.332 | 388.434 | 778.911 | 413.543 | 16.164 | 0.000 | 58.846 | 64.892 | 98.577 | 41.735 | 2.638 | 0.000 | 1,970.07 |
| 3 | 155.908 | 412.116 | 877.005 | 286.782 | 19.360 | 0.000 | 35.372 | 5.161 | 114.092 | 13.944 | 21.511 | 0.000 | 1,941.25 |
| 4 | 190.529 | 484.009 | 651.272 | 296.310 | 5.883 | 0.000 | 39.017 | 66.608 | 136.604 | 48.889 | 30.113 | 0.000 | 1,949.23 |
| 5 | 0.000 | 634.077 | 447.082 | 295.302 | 8.516 | 0.000 | 0.000 | 0.000 | 47.381 | 2.619 | 1.021 | 0.000 | 1,436.00 |
| 6 | 0.000 | 11.242 | 15.608 | 0.000 | 0.000 | 0.000 | 107.780 | 104.774 | 207.695 | 32.071 | 2.456 | 0.000 | 481.63 |
| Total | 686.667 | 2,275.850 | 3,273.753 | 1,363.614 | 116.369 | 20.120 | 269.397 | 282.434 | 651.339 | 150.814 | 57.739 | 0.000 | 9,148.096 |
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