Local Road Management Manual 474 52 11.90 11.50 11.5 11.8 12.1 12.4 12.6 10.69 12.8 54 14 13.5 13.5 13.8 14.2 14.6 14.9 12.7 15.1 56 16.5 15.9 15.8 16.1 16.4 17.1 17.4 15 17.7 58 19.3 18.5 18.4 18.7 19.3 19.8 20.3 17.6 20.7 60 22.4 21.5 21.3 21.6 22.3 22.9 23.5 20.5 24.0 62 25.9 24.9 24.6 24.9 25.6 26.4 27 23.8 27.7 64 29.9 28.6 28.2 28.5 29.3 30.2 31 27.5 31.9 66 34.3 32.8 32.3 32.6 33.4 34.4 35.4 36.1 36.5 68 39.2 37.5 36.8 37.1 37.9 39.1 40.2 41.1 41.6 70 44.6 42.7 41.9 42.10 42.9 44.2 45.5 46.6 47.3 72 50.6 48.40 47.5 47.6 48.5 49.9 51.4 52.6 53.5 74 57.3 54.7 53.6 53.60 54.6 56.1 57.7 59.2 60.3 76 64.6 61.7 60.4 60.3 61.2 62.8 64.7 66.4 67.7 78 72.5 69.3 67.8 67.7 68.6 70.2 72.3 74.3 75.8 80 81.3 77.6 75.9 75.7 76.6 78.3 80.6 82.8 84.7 82 90.9 86.7 84.7 84.4 85.3 87.1 89.6 92.1 94.2 84 101 97 94 94 95 97 99 102 105 86 13 107 105 104 105 107 110 113 116 88 125 119.0 116 116 116 118 121 125 128 90 138 132 129 128 129 131 134 137 141