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Highway Statistics Series

Highway Statistics 1998


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PUBLIC ROAD LENGTH – 1998 1/

MILES BY TYPE OF SURFACE AND OWNERSHIP/FUNCTIONAL SYSTEM

NATIONAL SUMMARY

OCTOBER 1999
Table HM-12

OWNERSHIP/FUNCTIONAL SYSTEM UNPAVED 2/ PAVED 3/ TOTAL
UNIMPROVED GRADED AND DRAINED GRAVEL OR STONE TOTAL LOW TYPE INTERMEDIATE TYPE HIGH TYPE TOTAL
FLEXIBLE COMPOSITE RIGID
Rural:
Under State Control: 4/
Principal Arterial:
Interstate
0 0 0 0 0 863 15,137 7,092 9,730 32,822 32,822
Other 0 0 184 184 309 3,521 64,660 20,581 9,406 98,477 98,661
Minor Arterial 0 0 212 212 1,185 9,474 100,499 19,091 3,642 133,891 134,103
Major Collector 0 141 1,498 1,639 17,558 36,257 153,093 16,816 3,789 227,513 229,152
Subtotal 0 141 1,894 2,035 19,052 50,115 333,389 63,580 26,567 492,703 494,738
Not Under State or Federal Control:
Principal Arterial:
Interstate
0 0 0 0 0 0 0 0 0 0 0
Other 0 0 0 0 0 36 83 41 23 183 183
Minor Arterial 0 0 0 0 146 668 1,827 44 32 2,717 2,717
Major Collector 426 1,939 39,049 41,414 26,395 62,978 59,707 4,188 5,617 158,885 200,299
Subtotal 426 1,939 39,049 41,414 26,541 63,682 61,617 4,273 5,672 161,785 203,199
Under Federal Control:
Principal Arterial:
Interstate
0 0 0 0 0 0 0 0 0 0 0
Other 0 0 0 0 0 0 60 0 4 64 64
Minor Arterial 0 0 0 0 83 152 457 1 0 693 693
Major Collector 73 76 487 636 370 1,574 956 0 0 2,900 3,536
Subtotal 73 76 487 636 453 1,726 1,473 1 4 3,657 4,293
Total Rural 5/ 499 2,156 41,430 44,085 46,046 115,523 396,479 67,854 32,243 658,145 702,230
Urban:
Under State Control: 4/
Principal Arterial:
Interstate
0 0 0 0 0 46 3,938 4,273 5,051 13,308 13,308
Other Freeways And Expressways 0 0 0 0 0 27 3,845 1,951 2,968 8,791 8,791
Other 0 0 0 0 44 677 21,888 11,583 4,469 38,661 38,661
Minor Arterial 0 0 0 0 155 1,882 20,033 7,842 1,451 31,363 31,363
Collector 0 0 15 15 404 2,715 7,398 1,033 391 11,941 11,956
Subtotal 0 0 15 15 603 5,347 57,102 26,682 14,330 104,064 104,079
Not Under State or Federal Control:
Principal Arterial:
Interstate
0 0 0 0 0 0 0 4 1 5 5
Other Freeways And Expressways 0 0 0 0 0 3 135 51 50 239 239
Other 0 0 5 5 108 1,099 10,214 1,573 1,428 14,422 14,427
Minor Arterial 3 27 332 362 1,981 9,445 37,177 4,967 4,167 57,737 58,099
Collector 31 95 529 655 4,118 18,355 45,279 4,192 3,339 75,283 75,938
Subtotal 34 122 866 1,022 6,207 28,902 92,805 10,787 8,985 147,686 148,708
Under Federal Control:
Principal Arterial:
Interstate
0 0 0 0 0 0 0 0 0 0 0
Other Freeways And Expressways 0 0 0 0 0 0 27 0 0 27 27
Other 0 0 0 0 0 0 19 2 0 21 21
Minor Arterial 0 0 0 0 0 2 68 5 2 77 77
Collector 0 0 0 0 0 13 60 11 0 84 84
Subtotal 0 0 0 0 0 15 174 18 2 209 209
Total Urban 5/ 34 122 881 1,037 6,810 34,264 150,081 37,487 23,317 251,959 252,996
Total Rural and Urban 5/ 533 2,278 42,311 45,122 52,856 149,787 546,560 105,341 55,560 910,104 955,226
Rural Minor Collector       95,780           177,926 273,706
Rural Local       1,350,623           776,180 2,126,803
Urban Local       37,024           556,134 593,158
Grand Total       1,528,549           2,420,344 3,948,893

1/ Includes the 50 States, the District of Columbia and Puerto Rico. Some differences from other tables may be noted because these are estimated from sample and summary data and do not include structures.

2/ Unpaved mileage includes the following categories: Unimproved roadways using the natural surface and maintained to permit passability; Graded and Drained roadways of natural earth aligned and graded to permit reasonably convenient use by motor vehicles and which have adequate drainage to prevent serious impairment of the road by normal surface water* surface may be stabilized; and Soil, Gravel, or Stone, a graded and drained road with a surface of mixed soil, gravel, crushed stone, slag, shell, etc.* surface may be stabilized.

3/ Paved mileage includes the following categories: Low Type, an earth, gravel, or stone roadway which has a bituminous surface course less than 1" thick* suitable for occasional heavy loads; Intermediate Type, a mixed bituminous or bituminous penetration roadway on a flexible base having a combined surface and base thickness of less than 7"; High-Type Flexible, a mixed bituminous or bituminous penetration roadway on a flexible base having a combined surface and base thickness of 7" or more* also includes brick, block, or combination roadways; High-Type Composite, a mixed bituminous or bituminous penetration roadway of more than 1" compacted material on a rigid base with a combined surface and base thickness of 7" or more; High-Type Rigid, a Portland Cement Concrete roadway with or without a bituminous wearing surface of less than 1".

4/ Includes State highway agency, State park, State toll and other State agency roadways.

5/ State summary totals for rural minor collectors and rural and urban locals are shown separately below.