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TABLE SHOWING APPROXIMATE MILEAGE OF INTERSTATE ROUTES | |||||
| State | Certified Miles |
Total 7 Per Cent |
Joint Board Selection (approximate) |
Per Cent of Certified Mileage |
Per Cent of 7 Per Cent System |
| Alabama | 56,551 | 3,958 | 1,600 | 2.8 | 40 |
| Arizona | 21,400 | 1,498 | 1,440 | 6.8 | 96 |
| Arkansas | 71,960 | 5,037 | 1,760 | 2.5 | 35 |
| California | 70,000 | 4,900 | 2,591 | 3.7 | 51 |
| Colorado | 48,000 | 3,360 | 2,299 | 4.8 | 68 |
| Connecticut | 12,000 | 840 | 296 | 2.5 | 35 |
| Delaware | 3,800 | 266 | 100 | 2.6 | 38 |
| Florida | 27,548 | 1,928 | 1,652 | 6.0 | 87 |
| Georgia | 80,892 | 5,662 | 2,190 | 2.7 | 39 |
| Idaho | 40,200 | 2,814 | 1,308 | 3.3 | 46 |
| Illinois | 96,771 | 6,774 | 3,440 | 3.6 | 50 |
| Indiana | 70,946 | 4,966 | 2,288 | 3.3 | 46 |
| Iowa | 109,113 | 7,638 | 2,947 | 2.7 | 39 |
| Kansas | 124,143 | 8,690 | 2,540 | 2.1 | 38 |
| Kentucky | 53,000 | 3,810 | 1,220 | 2.3 | 33 |
| Louisiana | 40,000 | 2,800 | 1,226 | 3.1 | 44 |
| Maine | 23,104 | 1,617 | 1,028 | 4.3 | 64 |
| Maryland | 14,810 | 1,037 | 370 | 2.5 | 35 |
| Massachusetts | 20,525 | 1,436 | 380 | 1.9 | 26 |
| Michigan | 75,000 | 5,250 | 2,970 | 3.9 | 56 |
| Minnesota | 103,050 | 7,213 | 2,530 | 2.5 | 35 |
| Mississippi | 53,000 | 3,710 | 1,626 | 3.1 | 44 |
| Missouri | 111,510 | 7,805 | 3,550 | 3.2 | 45 |
| Montana | 67,100 | 4,697 | 2,160 | 3.2 | 46 |
| Nebraska | 80,272 | 5,619 | 2,074 | 2.6 | 37 |
| Nevada | 22,000 | 1,540 | 580 | 2.6 | 38 |
| New Hampshire | 14,112 | 988 | 341 | 2.4 | 34 |
| New Jersey | 17,120 | 1,198 | 405 | 2.4 | 34 |
| New Mexico | 47,607 | 3,332 | 1,634 | 3.4 | 49 |
| New York | 81,873 | 5,731 | 1,125 | 1.3 | 19 |
| North Carolina | 60,000 | 4,200 | 2,330 | 3.8 | 55 |
| North Dakota | 106,202 | 7,434 | 1,400 | 1.3 | 19 |
| Ohio | 84,497 | 5,915 | 3,453 | 4.1 | 58 |
| Oklahoma | 112,698 | 7,889 | 2,120 | 1.8 | 27 |
| Oregon | 41,825 | 2,928 | 1,906 | 4.5 | 65 |
| Pennsylvania | 90,000 | 6,300 | 1,062 | 1.2 | 17 |
| Rhode Island | 2,368 | 166 | 90 | 3.8 | 54 |
| South Carolina | 52,318 | 3,662 | 1,260 | 2.3 | 35 |
| South Dakota | 115,390 | 8,077 | 1,226 | 1.1 | 15 |
| Tennessee | 65,204 | 4,564 | 1,485 | 2.3 | 33 |
| Texas | 182,816 | 12,797 | 3,925 | 2.2 | 31 |
| Utah | 24,057 | 1,684 | 1,141 | 4.8 | 68 |
| Vermont | 14,900 | 1,043 | 566 | 3.7 | 54 |
| Virginia | 53,338 | 3,733 | 2,614 | 4.4 | 70 |
