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Highway Statistics Series

Highway Statistics 1998


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NATIONAL HIGHWAY SYSTEM LENGTH – 1998

MILES BY VOLUME – SERVICE FLOW RATIO – RURAL 1/

OCTOBER 1999
TABLE HM-42
SHEET 1 OF 2

STATE VOLUME-SERVICE FLOW RATIO (V/SF)
INTERSTATE SYSTEM OTHER TOTAL
< 0.21 0.21-0.40 0.41-0.70 0.71-0.79 0.80-0.95 > 0.95 TOTAL < 0.21 0.21-0.40 0.41-0.70 0.71-0.79 0.80-0.95 > 0.95 TOTAL < 0.21 0.21-0.40 0.41-0.70 0.71-0.79 0.80-0.95 > 0.95 TOTAL
Alabama 0 167 377 33 16 9 602 814 883 316 10 25 0 2,048 814 1,050 693 43 41 9 2,650
Alaska 615 300 83 0 20 11 1,029 776 166 3 0 0 0 945 1,391 466 86 0 20 11 1,974
Arizona 681 303 12 0 0 0 996 532 428 152 0 10 14 1,136 1,213 731 164 0 10 14 2,132
Arkansas 0 144 234 1 13 2 394 504 684 438 73 117 6 1,822 504 828 672 74 130 8 2,216
California 198 389 566 85 97 23 1,358 702 1,202 1,347 115 71 90 3,527 900 1,591 1,913 200 168 113 4,885
Colorado 217 318 87 45 48 55 770 381 802 415 126 51 59 1,834 598 1,120 502 171 99 114 2,604
Connecticut 0 38 42 17 4 2 103 32 67 100 20 23 11 253 32 105 142 37 27 13 356
Delaware 0 0 0 0 0 0 0 14 77 101 3 2 0 197 14 77 101 3 2 0 197
Dist. of Columbia 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Florida 6 412 445 60 19 12 954 541 939 241 2 40 0 1,763 547 1,351 686 62 59 12 2,717
Georgia 179 399 191 20 1 0 790 1,875 454 156 7 0 0 2,492 2,054 853 347 27 1 0 3,282
Hawaii 0 0 6 0 0 0 6 0 62 16 6 49 7 140 0 62 22 6 49 7 146
Idaho 244 257 24 0 0 2 527 633 755 236 13 6 12 1,655 877 1,012 260 13 6 14 2,182
Illinois 320 896 272 2 18 10 1,518 1,215 612 13 14 0 5 1,859 1,535 1,508 285 16 18 15 3,377
Indiana 92 588 140 32 0 0 852 241 637 343 18 24 12 1,275 333 1,225 483 50 24 12 2,127
Iowa 113 263 216 40 1 1 634 936 872 173 5 2 0 1,988 1,049 1,135 389 45 3 1 2,622
Kansas 237 393 68 0 0 0 698 1,907 597 136 0 0 0 2,640 2,144 990 204 0 0 0 3,338
Kentucky 0 125 182 89 97 42 535 631 674 190 60 125 46 1,726 631 799 372 149 222 88 2,261
Louisiana 128 150 265 1 3 0 547 401 517 232 5 5 10 1,170 529 667 497 6 8 10 1,717
Maine 129 85 69 0 17 13 313 240 315 195 36 1 0 787 369 400 264 36 18 13 1,100
Maryland 0 38 94 30 40 28 230 57 228 194 49 28 2 558 57 266 288 79 68 30 788
Massachusetts 12 41 66 6 32 5 162 78 128 57 56 0 4 323 90 169 123 62 32 9 485
Michigan 116 298 270 22 27 7 740 596 1,098 426 53 65 55 2,293 712 1,396 696 75 92 62 3,033
Minnesota 223 102 275 25 20 36 681 655 1,133 543 91 90 66 2,578 878 1,235 818 116 110 102 3,259
Mississippi 134 282 125 9 7 0 557 1,059 497 109 2 0 8 1,675 1,193 779 234 11 7 8 2,232
Missouri 9 297 385 55 28 33 807 673 1,373 432 21 19 48 2,566 682 1,670 817 76 47 81 3,373
Montana 921 213 0 0 0 0 1,134 2,039 446 117 4 0 0 2,606 2,960 659 117 4 0 0 3,740
Nebraska 104 267 63 3 0 0 437 1,802 432 25 0 4 0 2,263 1,906 699 88 3 4 0 2,700
Nevada 363 58 32 6 21 0 480 1,118 213 64 3 14 1 1,413 1,481 271 96 9 35 1 1,893
New Hampshire 31 45 79 4 4 14 177 21 160 192 33 25 25 456 52 205 271 37 29 39 633
New Jersey 0 2 54 18 17 28 119 29 110 93 65 108 126 531 29 112 147 83 125 154 650
New Mexico 403 327 141 7 4 10 892 877 704 147 6 0 8 1,742 1,280 1,031 288 13 4 18 2,634
New York 62 317 319 15 77 5 795 698 840 322 33 46 30 1,969 760 1,157 641 48 123 35 2,764
North Carolina 0 156 345 74 33 27 635 412 1,041 498 82 80 59 2,172 412 1,197 843 156 113 86 2,807
North Dakota 503 27 0 0 0 0 530 2,038 51 0 0 0 0 2,089 2,541 78 0 0 0 0 2,619
Ohio 2 132 495 100 100 1 830 653 739 337 20 64 21 1,834 655 871 832 120 164 22 2,664
Oklahoma 97 388 184 31 11 9 720 1,415 563 127 0 1 0 2,106 1,512 951 311 31 12 9 2,826
Oregon 98 291 174 0 11 6 580 869 936 605 79 90 97 2,676 967 1,227 779 79 101 103 3,256
Pennsylvania 67 710 370 10 41 3 1,201 735 1,031 395 42 34 22 2,259 802 1,741 765 52 75 25 3,460
Rhode Island 0 0 4 15 2 1 22 42 8 12 0 3 1 66 42 8 16 15 5 2 88
South Carolina 0 55 438 64 69 45 671 440 530 265 15 12 10 1,272 440 585 703 79 81 55 1,943
South Dakota 398 224 7 0 0 0 629 1,749 394 40 2 5 0 2,190 2,147 618 47 2 5 0 2,819
Tennessee 17 221 434 3 55 3 733 391 779 251 44 9 7 1,481 408 1,000 685 47 64 10 2,214
Texas 840 758 386 64 112 56 2,216 3,385 2,136 770 32 70 19 6,412 4,225 2,894 1,156 96 182 75 8,628
Utah 442 273 55 0 0 0 770 402 289 232 17 20 49 1,009 844 562 287 17 20 49 1,779
Vermont 83 154 43 0 0 0 280 29 165 116 9 0 0 319 112 319 159 9 0 0 599
Virginia 0 107 340 123 89 52 711 587 619 192 10 8 34 1,450 587 726 532 133 97 86 2,161
Washington 44 158 201 57 26 16 502 969 878 185 26 9 12 2,079 1,013 1,036 386 83 35 28 2,581
West Virginia 59 222 175 0 0 0 456 663 342 55 14 0 0 1,074 722 564 230 14 0 0 1,530
Wisconsin 22 119 280 83 42 27 573 362 1,229 928 88 21 12 2,640 384 1,348 1,208 171 63 39 3,213
Wyoming 541 273 12 0 0 0 826 1,368 482 97 4 3 5 1,959 1,909 755 109 4 3 5 2,785
U.S. Total 8,750 11,782 9,125 1,249 1,222 594 32,722 38,586 30,317 12,629 1,413 1,379 993 85,317 47,336 42,099 21,754 2,662 2,601 1,587 118,039
Puerto Rico 4 41 44 11 1 0 101 15 20 11 0 0 0 46 19 61 55 11 1 0 147
Grand Total 8,754 11,823 9,169 1,260 1,223 594 32,823 38,601 30,337 12,640 1,413 1,379 993 85,363 47,355 42,160 21,809 2,673 2,602 1,587 118,186

OCTOBER 1998
SHEET 2 OF 2
TABLE HM-42

STATE VOLUME-SERVICE FLOW RATIO (V/SF)
INTERSTATE SYSTEM OTHER TOTAL
< 0.21 0.21-0.40 0.41-0.70 0.71-0.79 0.80-0.95 > 0.95 TOTAL < 0.21 0.21-0.40 0.41-0.70 0.71-0.79 0.80-0.95 > 0.95 TOTAL < 0.21 0.21-0.40 0.41-0.70 0.71-0.79 0.80-0.95 > 0.95 TOTAL
Alabama 0 57 142 27 44 33 303 97 265 226 43 35 27 693 97 322 368 70 79 60 996
Alaska 1 10 31 5 4 2 53 12 25 14 5 4 12 72 13 35 45 10 8 14 125
Arizona 34 63 42 17 7 11 174 54 94 96 22 36 26 328 88 157 138 39 43 37 502
Arkansas 0 42 69 6 7 23 147 34 90 86 17 7 21 255 34 132 155 23 14 44 402
California 20 38 264 113 250 384 1,069 38 172 514 139 283 300 1,446 58 210 778 252 533 684 2,515
Colorado 33 20 44 19 20 49 185 35 134 193 37 107 64 570 68 154 237 56 127 113 755
Connecticut 0 15 86 37 60 47 245 11 53 182 14 35 65 360 11 68 268 51 95 112 605
Delaware 0 0 27 3 3 8 41 0 17 39 4 2 0 62 0 17 66 7 5 8 103
Dist. of Columbia 0 1 3 1 5 2 12 0 11 26 7 10 9 63 0 12 29 8 15 11 75
Florida 3 50 208 71 67 110 509 45 309 503 50 78 55 1,040 48 359 711 121 145 165 1,549
Georgia 10 120 176 73 34 21 434 230 287 169 24 17 44 771 240 407 345 97 51 65 1,205
Hawaii 2 9 19 4 9 6 49 8 24 38 7 19 11 107 10 33 57 11 28 17 156
Idaho 5 32 29 6 7 7 86 25 31 23 3 3 9 94 30 63 52 9 10 16 180
Illinois 15 143 173 29 97 183 640 146 398 562 142 212 197 1,657 161 541 735 171 309 380 2,297
Indiana 4 130 138 14 7 27 320 29 118 85 72 35 37 376 33 248 223 86 42 64 696
Iowa 4 37 75 8 14 9 147 129 172 33 0 0 5 339 133 209 108 8 14 14 486
Kansas 20 41 80 16 9 8 174 60 106 50 6 5 6 233 80 147 130 22 14 14 407
Kentucky 1 15 109 19 33 50 227 37 99 124 20 39 69 388 38 114 233 39 72 119 615
Louisiana 19 48 92 13 37 25 234 29 112 136 26 39 127 469 48 160 228 39 76 152 703
Maine 6 23 18 1 3 1 52 10 46 51 6 9 11 133 16 69 69 7 12 12 185
Maryland 1 9 64 35 98 44 251 11 77 170 15 76 40 389 12 86 234 50 174 84 640
Massachusetts 1 62 152 44 73 72 404 34 225 378 122 131 159 1,049 35 287 530 166 204 231 1,453
Michigan 11 53 178 70 105 82 499 83 331 438 110 133 77 1,172 94 384 616 180 238 159 1,671
Minnesota 4 13 46 19 71 75 228 50 122 111 52 33 91 459 54 135 157 71 104 166 687
Mississippi 1 43 49 20 12 3 128 38 94 78 14 15 8 247 39 137 127 34 27 11 375
Missouri 4 55 120 38 103 52 372 85 180 225 26 61 22 599 89 235 345 64 164 74 971
Montana 29 28 0 0 0 0 57 14 25 18 1 2 2 62 43 53 18 1 2 2 119
Nebraska 2 11 21 0 9 1 44 44 52 99 15 21 14 245 46 63 120 15 30 15 289
Nevada 12 9 23 17 12 13 86 11 32 27 10 2 17 99 23 41 50 27 14 30 185
New Hampshire 0 4 23 7 3 11 48 3 19 55 3 23 11 114 3 23 78 10 26 22 162
New Jersey 0 7 121 16 68 90 302 56 108 324 143 130 319 1,080 56 115 445 159 198 409 1,382
New Mexico 25 46 13 4 5 15 108 67 69 22 8 9 4 179 92 115 35 12 14 19 287
New York 24 144 272 30 103 128 701 123 381 566 97 192 257 1,616 147 525 838 127 295 385 2,317
North Carolina 4 6 158 54 53 79 354 40 84 183 33 42 74 456 44 90 341 87 95 153 810
North Dakota 27 9 5 0 0 0 41 24 28 11 0 0 0 63 51 37 16 0 0 0 104
Ohio 3 37 241 81 188 191 741 73 319 296 75 70 77 910 76 356 537 156 258 268 1,651
Oklahoma 9 50 89 21 16 24 209 84 74 57 16 26 18 275 93 124 146 37 42 42 484
Oregon 12 16 36 14 35 29 142 51 107 161 21 25 28 393 63 123 197 35 60 57 535
Pennsylvania 12 89 282 27 60 79 549 92 418 523 146 108 132 1,419 104 507 805 173 168 211 1,968
Rhode Island 0 4 18 0 7 18 47 9 24 56 13 13 7 122 9 28 74 13 20 25 169
South Carolina 1 4 62 14 44 31 156 28 106 185 29 70 52 470 29 110 247 43 114 83 626
South Dakota 11 22 16 0 0 0 49 23 19 19 0 1 0 62 34 41 35 0 1 0 111
Tennessee 2 54 95 46 56 87 340 21 217 223 82 34 45 622 23 271 318 128 90 132 962
Texas 49 129 286 96 251 207 1,018 378 828 1,261 354 319 301 3,441 427 957 1,547 450 570 508 4,459
Utah 23 21 85 24 6 8 167 17 82 83 13 18 6 219 40 103 168 37 24 14 386
Vermont 6 17 17 0 0 0 40 2 14 20 4 9 5 54 8 31 37 4 9 5 94
Virginia 21 40 123 36 104 59 383 73 214 298 62 81 102 830 94 254 421 98 185 161 1,213
Washington 3 29 55 48 81 46 262 61 126 182 64 38 69 540 64 155 237 112 119 115 802
West Virginia 0 42 45 5 2 0 94 13 48 31 7 10 5 114 13 90 76 12 12 5 208
Wisconsin 2 44 44 14 22 36 162 70 247 240 58 71 59 745 72 291 284 72 93 95 907
Wyoming 65 22 0 0 0 0 87 44 22 11 1 0 0 78 109 44 11 1 0 0 165
U.S. Total 541 2,013 4,564 1,262 2,304 2,486 13,170 2,751 7,255 9,501 2,238 2,738 3,096 27,579 3,292 9,268 14,065 3,500 5,042 5,582 40,749
Puerto Rico 1 27 78 9 21 10 146 8 9 31 7 14 18 87 9 36 109 16 35 28 233
Grand Total 542 2,040 4,642 1,271 2,325 2,496 13,316 2,759 7,264 9,532 2,245 2,752 3,114 27,666 3,301 9,304 14,174 3,516 5,077 5,610 40,982

1/ Updated capacity (service flow) calculation procedures are based on the Highway Capacity Manual, Third Edition, 1994, published by the Transportation Research Board. Some differences from other tables may be noted