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Bridges & Structures

 

2020 Tunnel Counts by State

12/31/2020

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State Name ALL TUNNELS COMPLEX TUNNELS NHS TUNNELS NHS COMPLEX TUNNELS
Tunnel Count Number of Bores Total Length (ft) Total Length of All Lanes (ft) Total AADT Total AADTT Tunnel Count Number of Bores Total Length (ft) Total Length of All Lanes (ft) Total AADT Total AADTT Tunnel Count Number of Bores Total Length (ft) Total Length of All Lanes (ft) Total AADT Total AADTT Tunnel Count Number of Bores Total Length (ft) Total Length of All Lanes (ft) Total AADT Total AADTT
ALABAMA 4 5 7,175 19,945 107,750 12,598 2 3 6,109 18,218 92,750 11,298 2 3 6,109 18,218 92,750 11,298 2 3 6,109 18,218 92,750 11,298
ALASKA 3 3 14,020 14,465 8,828 662 1 1 13,300 13,300 838 9 3 3 14,020 14,465 8,828 662 1 1 13,300 13,300 838 9
ARIZONA 5 7 5,801 45,203 256,437 9,432 1 3 2,582 36,148 238,989 7,718 3 5 5,199 43,999 252,061 9,000 1 3 2,582 36,148 238,989 7,718
ARKANSAS 1 2 1,594 6,376 20,000 5,200 1 2 1,594 6,376 20,000 5,200 1 2 1,594 6,376 20,000 5,200 1 2 1,594 6,376 20,000 5,200
CALIFORNIA 101 103 95,847 241,019 4,448,499 154,033 41 42 58,604 152,074 2,281,607 82,762 57 58 69,345 192,061 4,155,563 146,409 32 33 50,156 133,012 2,150,030 80,165
COLORADO 39 39 41,742 83,070 366,619 37,511 6 6 27,445 55,600 117,809 11,542 13 13 32,509 65,767 285,400 31,738 5 5 26,735 53,470 93,200 10,312
CONNECTICUT 3 5 2,524 12,892 256,000 18,801 1 2 824 6,592 162,900 17,500 3 5 2,524 12,892 256,000 18,801 1 2 824 6,592 162,900 17,500
DELAWARE - - - - - - - - - - - - - - - - - - - - - - - -
DISTRICT OF COLUMBIA 17 26 12,635 53,095 546,645 13,205 4 6 6,979 32,376 266,700 3,597 16 25 12,486 52,946 546,595 13,203 4 6 6,979 32,376 266,700 3,597
FLORIDA 2 3 5,131 20,524 73,369 3,067 2 3 5,131 20,524 73,369 3,067 2 3 5,131 20,524 73,369 3,067 2 3 5,131 20,524 73,369 3,067
GEORGIA 1 3 667 4,002 142,000 1,115 - - - - - - 1 3 667 4,002 142,000 1,115 - - - - - -
GUAM - - - - - - - - - - - - - - - - - - - - - - - -
HAWAII 11 11 22,360 45,074 465,474 23,275 4 4 18,260 36,520 155,120 7,756 11 11 22,360 45,074 465,474 23,275 4 4 18,260 36,520 155,120 7,756
IDAHO 10 10 4,782 4,782 1,531 81 - - - - - - - - - - - - - - - - - -
ILLINOIS 4 5 2,420 9,480 251,415 12,663 2 2 1,280 1,280 14,700 828 3 3 2,020 8,680 251,400 12,663 2 2 1,280 1,280 14,700 828
INDIANA 5 5 1,604 6,416 54,976 2,747 - - - - - - - - - - - - - - - - - -
IOWA 1 1 150 300 1,000 20 - - - - - - - - - - - - - - - - - -
KANSAS - - - - - - - - - - - - - - - - - - - - - - - -
KENTUCKY 9 12 7,726 28,711 113,411 10,429 2 4 6,540 26,160 27,300 3,156 2 4 2,120 8,480 103,852 9,386 1 2 1,680 6,720 21,300 2,556
LOUISIANA 3 4 2,840 7,840 94,287 12,225 - - - - - - 2 2 1,760 3,520 67,900 5,226 - - - - - -
MAINE - - - - - - - - - - - - - - - - - - - - - - - -
MARYLAND 5 9 15,200 88,738 200,125 23,813 2 6 14,860 88,276 200,055 23,807 2 6 14,860 88,276 200,055 23,807 2 6 14,860 88,276 200,055 23,807
MASSACHUSETTS 45 45 85,992 206,123 2,491,272 183,468 45 45 85,992 206,123 2,491,272 183,468 41 41 75,952 185,592 2,422,994 179,202 41 41 75,952 185,592 2,422,994 179,202
MICHIGAN 9 9 11,992 45,262 171,923 4,356 6 6 10,430 38,866 127,723 3,806 5 5 8,896 36,858 122,960 3,426 4 4 8,628 34,446 95,860 3,226
MINNESOTA 5 8 5,816 21,864 270,746 13,486 - - - - - - 5 8 5,816 21,864 270,746 13,486 - - - - - -
MISSISSIPPI - - - - - - - - - - - - - - - - - - - - - - - -
MISSOURI 1 1 1,419 5,676 24,960 1,248 1 1 1,419 5,676 24,960 1,248 1 1 1,419 5,676 24,960 1,248 1 1 1,419 5,676 24,960 1,248
MONTANA 5 5 2,101 3,086 18,560 646 - - - - - - 1 1 395 790 16,050 321 - - - - - -
NEBRASKA 3 3 505 1,010 225 24 - - - - - - - - - - - - - - - - - -
NEVADA 6 6 8,867 23,192 142,000 10,038 - - - - - - 4 4 8,245 21,948 128,700 9,690 - - - - - -
NEW HAMPSHIRE - - - - - - - - - - - - - - - - - - - - - - - -
NEW JERSEY 5 9 21,657 104,320 563,063 9,798 5 9 21,657 104,320 563,063 9,798 5 9 21,657 104,320 563,063 9,798 5 9 21,657 104,320 563,063 9,798
NEW MEXICO 3 3 804 1,333 4,888 24 - - - - - - - - - - - - - - - - - -
NEW YORK 10 15 38,956 165,986 424,730 20,429 9 14 38,373 164,820 419,450 19,901 4 9 32,181 145,156 323,576 18,180 4 9 32,181 145,156 323,576 18,180
NORTH CAROLINA 29 29 17,269 34,538 150,643 13,755 - - - - - - 4 4 4,108 8,216 50,500 10,185 - - - - - -
NORTH DAKOTA - - - - - - - - - - - - - - - - - - - - - - - -
OHIO 1 1 855 5,130 62,690 5,831 1 1 855 5,130 62,690 5,831 1 1 855 5,130 62,690 5,831 1 1 855 5,130 62,690 5,831
OKLAHOMA - - - - - - - - - - - - - - - - - - - - - - - -
OREGON 14 14 10,590 23,030 97,651 10,479 - - - - - - 9 9 9,016 20,082 62,750 8,747 - - - - - -
PENNSYLVANIA 26 27 91,215 184,797 565,365 96,076 20 20 87,869 175,738 493,344 93,245 16 16 77,162 154,324 483,144 92,245 16 16 77,162 154,324 483,144 92,245
PUERTO RICO 3 5 5,401 15,330 223,500 6,385 3 5 5,401 15,330 223,500 6,385 3 5 5,401 15,330 223,500 6,385 3 5 5,401 15,330 223,500 6,385
RHODE ISLAND 1 1 1,791 3,582 300 250 - - - - - - - - - - - - - - - - - -
SOUTH CAROLINA - - - - - - - - - - - - - - - - - - - - - - - -
SOUTH DAKOTA 7 7 747 824 6,618 257 - - - - - - - - - - - - - - - - - -
TENNESSEE 14 15 12,847 42,855 208,594 18,716 3 4 6,965 33,159 65,550 6,586 7 7 5,567 13,130 137,462 12,942 1 1 1,016 6,096 30,550 3,666
TEXAS 5 5 5,771 10,658 38,175 60 2 2 4,586 9,172 26,275 55 3 3 3,820 6,756 31,700 - 1 1 2,936 5,872 20,000 -
U.S. VIRGIN ISLANDS - - - - - - - - - - - - - - - - - - - - - - - -
UTAH 6 6 6,832 13,664 45,800 13,236 - - - - - - 6 6 6,832 13,664 45,800 13,236 - - - - - -
VERMONT - - - - - - - - - - - - - - - - - - - - - - - -
VIRGINIA 17 19 61,177 156,300 557,862 34,094 12 14 57,161 145,620 507,912 33,238 9 11 38,269 110,484 490,000 30,498 8 10 37,607 106,512 458,000 29,858
WASHINGTON 61 67 43,791 166,648 1,802,270 87,232 8 12 22,446 110,530 617,241 22,729 43 49 35,881 146,802 1,621,677 76,233 7 11 21,821 108,030 610,708 22,598
WEST VIRGINIA 11 13 13,626 35,844 79,794 12,511 2 4 7,179 28,716 70,500 12,270 2 4 7,179 28,716 70,500 12,270 2 4 7,179 28,716 70,500 12,270
WISCONSIN 5 5 2,803 7,609 55,000 1,312 - - - - - - 1 1 433 433 3,400 34 - - - - - -
WYOMING 10 10 7,050 14,100 44,035 12,168 - - - - - - 10 10 7,050 14,100 44,035 12,168 - - - - - -
Total 526 581 704,092 1,984,693 15,459,030 896,756 186 221 513,841 1,536,644 9,345,617 576,800 301 350 548,838 1,644,651 14,121,454 830,975 152 185 443,304 1,358,012 8,879,496 558,320

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Updated: 03/12/2021
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