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Bridges & Structures

 

2021 Tunnel Counts by State

06/15/2021

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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 8,097 662 1 1 13,300 13,300 1,056 9 3 3 14,020 14,465 8,097 662 1 1 13,300 13,300 1,056 9
ARIZONA 6 8 6,005 45,611 256,974 9,486 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 103 105 96,984 244,938 4,554,670 157,830 43 44 63,472 162,443 2,359,807 85,622 59 60 70,482 195,980 4,261,734 150,206 34 35 55,024 143,381 2,228,230 83,025
COLORADO 39 39 41,742 83,070 388,819 34,667 6 6 27,445 55,600 133,609 11,140 13 13 32,509 65,767 310,200 29,110 5 5 26,735 53,470 109,000 9,910
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 23 12,615 59,126 533,445 12,682 4 6 6,962 39,295 198,500 5,534 14 19 11,722 57,489 519,895 12,280 4 6 6,962 39,295 198,500 5,534
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 13 13 22,955 45,669 472,474 23,295 4 4 18,260 36,520 155,120 7,756 12 12 22,510 45,224 468,974 23,285 4 4 18,260 36,520 155,120 7,756
IDAHO 10 10 4,782 4,782 1,531 81 - - - - - - - - - - - - - - - - - -
ILLINOIS 5 6 2,660 10,440 251,450 13,544 2 2 1,280 1,280 14,700 828 3 3 2,020 8,680 251,400 13,539 2 2 1,280 1,280 14,700 828
INDIANA 6 6 1,784 6,776 55,776 2,847 - - - - - - - - - - - - - - - - - -
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 86,046 206,196 2,170,876 189,114 45 45 86,046 206,196 2,170,876 189,114 41 41 76,006 185,665 2,102,598 184,848 41 41 76,006 185,665 2,102,598 184,848
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 7 10 7,161 24,554 270,766 13,488 - - - - - - 5 8 5,816 21,864 270,746 13,486 - - - - - -
MISSISSIPPI - - - - - - - - - - - - - - - - - - - - - - - -
MISSOURI 1 1 1,419 5,676 23,420 1,171 1 1 1,419 5,676 23,420 1,171 1 1 1,419 5,676 23,420 1,171 1 1 1,419 5,676 23,420 1,171
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 34 - - - - - - - - - - - - - - - - - -
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 5 5 1,620 4,440 16,400 1,140 - - - - - - - - - - - - - - - - - -
OREGON 14 14 10,590 23,030 98,035 10,519 - - - - - - 9 9 9,016 20,082 62,750 8,747 - - - - - -
PENNSYLVANIA 26 27 91,215 184,797 559,207 96,085 20 20 87,869 175,738 487,197 93,255 16 16 77,162 154,324 476,997 92,255 16 16 77,162 154,324 476,997 92,255
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 18,719 3 4 6,965 33,159 65,550 6,586 7 7 5,567 13,130 137,462 12,944 1 1 1,016 6,096 30,550 3,666
TEXAS 6 6 7,008 23,028 183,175 60 3 3 5,823 21,542 171,275 55 4 4 5,057 19,126 176,700 - 2 2 4,173 18,242 165,000 -
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 61,177 156,300 560,950 34,401 12 14 57,161 145,620 499,000 33,349 9 11 38,269 110,484 493,000 30,813 8 10 37,607 106,512 448,000 29,913
WASHINGTON 61 67 43,791 166,190 1,802,270 87,232 8 12 22,446 110,530 617,241 22,729 43 49 35,881 146,344 1,621,677 76,233 7 11 21,821 108,030 610,708 22,598
WEST VIRGINIA 11 13 13,625 35,842 78,536 13,774 2 4 7,179 28,716 69,500 13,550 2 4 7,179 28,716 69,500 13,550 2 4 7,179 28,716 69,500 13,550
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 34,592 9,119 - - - - - - 10 10 7,050 14,100 34,592 9,119 - - - - - -
Total 541 593 710,683 2,016,079 15,407,939 903,535 189 224 519,983 1,566,375 9,178,640 588,165 303 348 550,652 1,665,248 14,037,968 836,234 155 188 449,446 1,387,743 8,711,431 569,629

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