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From page 5... ... NCHRP 24-25 Page 5 Phase II Final Report 1. INTRODUCTION Bridges are skillfully designed to withstand the most common natural hazards (e.g. Read the entire page →
From page 6... ... NCHRP 24-25 Page 6 Phase II Final Report database. This indicates that bridges with unknown foundations are not a significant issue for all States. Read the entire page →
From page 7... ... NCHRP 24-25 Page 7 Phase II Final Report Table 1 Numbers of Bridges with Unknown Foundations by State Rural Functional Classifications Urban Functional Classifications 01 02 06 07 08 09 11 12 14 16 17 19 State P r i n c i p a l A r t e r i a l I n t e r s t a t e P r i n c i p a l A r t e r i a l O t h e r M i n o r A r t e r i a l M a j o r C o l l e c t o r M i n o r C o l l e c t o r L o c a l P r i n c i p a l A r t e r i a l I n t e r s t a t e P r i n c i p a l A r t e r i a l O t h e r F r e e w a y s o r E x p r e s s w a y s O t h e r P r i n c i p a l A r t e r i a l M i n o r A r t e r i a l C o l l e c t o r L o c a l T o t a l s Alabama 4 70 79 503 843 1,662 4 5 25 39 55 164 3,453 Alaska 7 29 4 19 23 46 1 0 1 7 1 13 151 Arizona 0 0 0 1 0 33 0 0 1 3 5 25 68 Arkansas 0 1 11 48 4 10 0 0 1 2 0 2 79 California 4 23 112 318 305 993 3 9 71 84 60 126 2,108 Colorado 1 2 9 4 3 8 0 0 0 1 1 0 29 Connecticut 0 0 0 0 0 0 0 0 0 0 0 0 0 Delaware 0 0 0 0 0 0 0 0 0 0 0 0 0 DC 0 0 0 0 0 0 0 0 0 0 0 8 8 Florida 3 110 111 224 188 837 13 27 74 136 280 444 2,447 Georgia 3 346 434 1,227 565 1,780 0 32 178 288 188 406 5,447 Hawaii 0 0 0 0 0 0 0 0 0 2 0 8 10 Idaho 0 1 1 71 74 318 0 0 3 6 9 14 497 Illinois 0 0 0 1 0 1 0 0 0 0 0 0 2 Indiana 0 1 0 140 263 828 0 0 42 101 75 156 1,606 Iowa 0 1 3 92 256 1,371 0 0 0 11 6 30 1,770 Kansas 0 0 0 0 1 5 0 0 0 0 0 0 6 Kentucky 0 0 0 0 0 1 0 0 0 0 0 1 2 Louisiana 17 13 180 527 488 2,963 12 1 30 84 58 401 4,774 Maine 6 2 1 4 3 76 2 0 0 2 5 4 105 Maryland 0 0 0 0 0 4 0 0 0 0 0 1 5 Massachusetts 2 0 10 25 16 70 0 1 42 95 45 52 358 Michigan 3 36 43 157 13 360 2 2 9 10 11 11 657 Minnesota 0 0 2 16 24 161 0 0 0 4 2 7 216 Mississippi 0 16 11 1,205 187 4,790 0 0 32 54 101 137 6,533 Missouri 0 0 1 6 1 0 0 0 0 0 0 0 8 Montana 2 1 5 1 429 1,244 0 0 0 1 0 2 1,685 Nebraska 0 0 0 0 0 0 0 0 0 0 0 0 0 Nevada 0 0 2 1 3 24 0 0 1 10 1 3 45 New Hampshire 0 0 0 3 6 22 0 0 2 5 4 1 43 New Jersey 0 6 7 11 7 53 0 4 20 23 20 14 165 New Mexico 0 7 7 46 41 254 1 0 13 27 39 33 468 New York 0 0 0 1 1 13 0 2 7 9 4 12 49 North Carolina 0 29 95 464 700 3,949 0 2 30 81 77 379 5,806 Read the entire page →
From page 8... ... NCHRP 24-25 Page 8 Phase II Final Report Rural Functional Classifications Urban Functional Classifications 01 02 06 07 08 09 11 12 14 16 17 19 State P r i n c i p a l A r t e r i a l I n t e r s t a t e P r i n c i p a l A r t e r i a l O t h e r M i n o r A r t e r i a l M a j o r C o l l e c t o r M i n o r C o l l e c t o r L o c a l P r i n c i p a l A r t e r i a l I n t e r s t a t e P r i n c i p a l A r t e r i a l O t h e r F r e e w a y s o r E x p r e s s w a y s O t h e r P r i n c i p a l A r t e r i a l M i n o r A r t e r i a l C o l l e c t o r L o c a l T o t a l s North Dakota 0 0 3 210 0 1,780 0 0 0 5 3 7 2,008 Ohio 0 2 1 13 23 222 0 0 2 1 5 12 281 Oklahoma 0 0 9 1 1 9 1 2 5 0 0 0 28 Oregon 5 58 90 425 235 801 4 2 18 50 51 56 1,795 Pennsylvania 0 0 0 0 1 7 0 0 0 0 0 0 8 Rhode Island 0 0 0 0 0 0 0 0 0 0 0 0 0 South Carolina 21 49 125 592 443 1,904 6 0 20 49 96 144 3,449 South Dakota 0 0 0 1 0 0 0 0 0 0 0 0 1 Tennessee 6 8 32 74 252 654 0 0 8 27 24 73 1,158 Texas 9 18 40 199 190 6,524 2 4 205 463 319 1,140 9,113 Utah 0 0 0 1 0 4 0 0 1 0 0 2 8 Vermont 0 2 5 29 26 155 0 0 2 4 9 6 238 Virginia 0 0 0 0 2 16 0 0 0 0 0 0 18 Washington 0 0 1 47 39 102 0 0 5 4 3 5 206 West Virginia 0 0 0 0 0 0 0 0 0 0 0 0 0 Wisconsin 0 0 0 0 0 0 0 0 0 0 0 0 0 Wyoming 0 0 1 0 43 347 1 0 0 3 7 13 415 Puerto Rico 0 0 21 70 40 77 0 0 9 23 36 36 312 Totals 93 831 1,456 6,777 5,739 34,478 52 93 857 1,714 1,600 3,948 57,638 Read the entire page →
From page 9... ... NCHRP 24-25 Page 9 Phase II Final Report Table 2 Numbers of Bridges with Unknown Foundations by Age Rural Functional Classifications Urban Functional Classifications 01 02 06 07 08 09 11 12 14 16 17 19 Year Built P r i n c i p a l A r t e r i a l I n t e r s t a t e P r i n c i p a l A r t e r i a l O t h e r M i n o r A r t e r i a l M a j o r C o l l e c t o r M i n o r C o l l e c t o r L o c a l P r i n c i p a l A r t e r i a l I n t e r s t a t e P r i n c i p a l A r t e r i a l O t h e r F r e e w a y s o r E x p r e s s w a y s O t h e r P r i n c i p a l A r t e r i a l M i n o r A r t e r i a l C o l l e c t o r L o c a l T o t a l s 1900-1904 0 0 1 20 65 534 0 0 14 14 10 32 690 1905-1909 0 0 5 8 15 96 0 0 3 10 5 18 160 1910-1914 0 0 3 17 42 240 0 0 9 21 20 30 382 1915-1919 1 1 7 36 40 324 0 1 14 24 9 39 496 1920-1924 0 31 59 148 92 679 0 0 42 42 32 67 1,192 1925-1929 1 36 91 154 112 532 0 3 47 55 46 82 1,159 1930-1934 0 51 103 256 180 1,131 0 6 42 72 50 109 2,000 1935-1939 0 50 106 290 209 1,347 1 1 62 85 69 105 2,325 1940-1944 1 41 98 256 268 1,270 0 0 31 31 49 103 2,148 1945-1949 5 44 96 275 207 898 1 3 31 50 42 66 1,718 1950-1954 2 95 125 591 623 2,470 0 4 67 104 95 219 4,395 1955-1959 8 97 186 946 630 2,534 5 4 49 149 132 260 5,000 1960-1964 23 51 102 797 707 3,824 4 10 56 150 192 499 6,415 1965-1969 24 44 86 736 650 3,357 14 12 73 125 155 400 5,676 1970-1974 11 74 60 606 535 3,159 5 12 60 167 159 453 5,301 1975-1979 7 27 53 532 432 3,038 4 10 31 145 115 420 4,814 1980-1984 1 35 45 365 359 2,596 7 2 51 109 108 273 3,951 1985-1989 1 36 41 258 236 2,473 7 4 67 161 123 306 3,713 1990-1994 0 51 77 268 244 2,353 2 14 52 74 76 210 3,421 1995-1999 4 26 70 181 169 1,701 0 2 21 55 57 146 2,432 2000-2004 4 35 28 81 90 1,101 2 4 20 21 31 89 1,506 Totals 93 831 1,456 6,777 5,739 34,478 52 93 857 1,714 1,600 3,948 57,638 Read the entire page →
From page 10... ... NCHRP 24-25 Page 10 Phase II Final Report 1.2. Performance-Based versus Traditional Design Practice This report focuses on estimating the vulnerability of bridges with unknown foundations to hazards that might cause these bridges to fail unexpectedly, which is obviously an important aspect of performance. Read the entire page →
From page 11... ... NCHRP 24-25 Page 11 Phase II Final Report that unsatisfactory performance (e.g., the functional objective is not met) will occur. Read the entire page →
From page 12... ... NCHRP 24-25 Page 12 Phase II Final Report increased flexibility in the design process and contribute to cost-efficiencies in a design that meet facility specific requirements and desired performance goals. Read the entire page →

From page 5...

... NCHRP 24-25 Page 5 Phase II Final Report 1. INTRODUCTION Bridges are skillfully designed to withstand the most common natural hazards (e.g.

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From page 6...

... NCHRP 24-25 Page 6 Phase II Final Report database. This indicates that bridges with unknown foundations are not a significant issue for all States.

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From page 7...

... NCHRP 24-25 Page 7 Phase II Final Report Table 1 Numbers of Bridges with Unknown Foundations by State Rural Functional Classifications Urban Functional Classifications 01 02 06 07 08 09 11 12 14 16 17 19 State P r i n c i p a l A r t e r i a l I n t e r s t a t e P r i n c i p a l A r t e r i a l O t h e r M i n o r A r t e r i a l M a j o r C o l l e c t o r M i n o r C o l l e c t o r L o c a l P r i n c i p a l A r t e r i a l I n t e r s t a t e P r i n c i p a l A r t e r i a l O t h e r F r e e w a y s o r E x p r e s s w a y s O t h e r P r i n c i p a l A r t e r i a l M i n o r A r t e r i a l C o l l e c t o r L o c a l T o t a l s Alabama 4 70 79 503 843 1,662 4 5 25 39 55 164 3,453 Alaska 7 29 4 19 23 46 1 0 1 7 1 13 151 Arizona 0 0 0 1 0 33 0 0 1 3 5 25 68 Arkansas 0 1 11 48 4 10 0 0 1 2 0 2 79 California 4 23 112 318 305 993 3 9 71 84 60 126 2,108 Colorado 1 2 9 4 3 8 0 0 0 1 1 0 29 Connecticut 0 0 0 0 0 0 0 0 0 0 0 0 0 Delaware 0 0 0 0 0 0 0 0 0 0 0 0 0 DC 0 0 0 0 0 0 0 0 0 0 0 8 8 Florida 3 110 111 224 188 837 13 27 74 136 280 444 2,447 Georgia 3 346 434 1,227 565 1,780 0 32 178 288 188 406 5,447 Hawaii 0 0 0 0 0 0 0 0 0 2 0 8 10 Idaho 0 1 1 71 74 318 0 0 3 6 9 14 497 Illinois 0 0 0 1 0 1 0 0 0 0 0 0 2 Indiana 0 1 0 140 263 828 0 0 42 101 75 156 1,606 Iowa 0 1 3 92 256 1,371 0 0 0 11 6 30 1,770 Kansas 0 0 0 0 1 5 0 0 0 0 0 0 6 Kentucky 0 0 0 0 0 1 0 0 0 0 0 1 2 Louisiana 17 13 180 527 488 2,963 12 1 30 84 58 401 4,774 Maine 6 2 1 4 3 76 2 0 0 2 5 4 105 Maryland 0 0 0 0 0 4 0 0 0 0 0 1 5 Massachusetts 2 0 10 25 16 70 0 1 42 95 45 52 358 Michigan 3 36 43 157 13 360 2 2 9 10 11 11 657 Minnesota 0 0 2 16 24 161 0 0 0 4 2 7 216 Mississippi 0 16 11 1,205 187 4,790 0 0 32 54 101 137 6,533 Missouri 0 0 1 6 1 0 0 0 0 0 0 0 8 Montana 2 1 5 1 429 1,244 0 0 0 1 0 2 1,685 Nebraska 0 0 0 0 0 0 0 0 0 0 0 0 0 Nevada 0 0 2 1 3 24 0 0 1 10 1 3 45 New Hampshire 0 0 0 3 6 22 0 0 2 5 4 1 43 New Jersey 0 6 7 11 7 53 0 4 20 23 20 14 165 New Mexico 0 7 7 46 41 254 1 0 13 27 39 33 468 New York 0 0 0 1 1 13 0 2 7 9 4 12 49 North Carolina 0 29 95 464 700 3,949 0 2 30 81 77 379 5,806

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From page 8...

... NCHRP 24-25 Page 8 Phase II Final Report Rural Functional Classifications Urban Functional Classifications 01 02 06 07 08 09 11 12 14 16 17 19 State P r i n c i p a l A r t e r i a l I n t e r s t a t e P r i n c i p a l A r t e r i a l O t h e r M i n o r A r t e r i a l M a j o r C o l l e c t o r M i n o r C o l l e c t o r L o c a l P r i n c i p a l A r t e r i a l I n t e r s t a t e P r i n c i p a l A r t e r i a l O t h e r F r e e w a y s o r E x p r e s s w a y s O t h e r P r i n c i p a l A r t e r i a l M i n o r A r t e r i a l C o l l e c t o r L o c a l T o t a l s North Dakota 0 0 3 210 0 1,780 0 0 0 5 3 7 2,008 Ohio 0 2 1 13 23 222 0 0 2 1 5 12 281 Oklahoma 0 0 9 1 1 9 1 2 5 0 0 0 28 Oregon 5 58 90 425 235 801 4 2 18 50 51 56 1,795 Pennsylvania 0 0 0 0 1 7 0 0 0 0 0 0 8 Rhode Island 0 0 0 0 0 0 0 0 0 0 0 0 0 South Carolina 21 49 125 592 443 1,904 6 0 20 49 96 144 3,449 South Dakota 0 0 0 1 0 0 0 0 0 0 0 0 1 Tennessee 6 8 32 74 252 654 0 0 8 27 24 73 1,158 Texas 9 18 40 199 190 6,524 2 4 205 463 319 1,140 9,113 Utah 0 0 0 1 0 4 0 0 1 0 0 2 8 Vermont 0 2 5 29 26 155 0 0 2 4 9 6 238 Virginia 0 0 0 0 2 16 0 0 0 0 0 0 18 Washington 0 0 1 47 39 102 0 0 5 4 3 5 206 West Virginia 0 0 0 0 0 0 0 0 0 0 0 0 0 Wisconsin 0 0 0 0 0 0 0 0 0 0 0 0 0 Wyoming 0 0 1 0 43 347 1 0 0 3 7 13 415 Puerto Rico 0 0 21 70 40 77 0 0 9 23 36 36 312 Totals 93 831 1,456 6,777 5,739 34,478 52 93 857 1,714 1,600 3,948 57,638

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From page 9...

... NCHRP 24-25 Page 9 Phase II Final Report Table 2 Numbers of Bridges with Unknown Foundations by Age Rural Functional Classifications Urban Functional Classifications 01 02 06 07 08 09 11 12 14 16 17 19 Year Built P r i n c i p a l A r t e r i a l I n t e r s t a t e P r i n c i p a l A r t e r i a l O t h e r M i n o r A r t e r i a l M a j o r C o l l e c t o r M i n o r C o l l e c t o r L o c a l P r i n c i p a l A r t e r i a l I n t e r s t a t e P r i n c i p a l A r t e r i a l O t h e r F r e e w a y s o r E x p r e s s w a y s O t h e r P r i n c i p a l A r t e r i a l M i n o r A r t e r i a l C o l l e c t o r L o c a l T o t a l s 1900-1904 0 0 1 20 65 534 0 0 14 14 10 32 690 1905-1909 0 0 5 8 15 96 0 0 3 10 5 18 160 1910-1914 0 0 3 17 42 240 0 0 9 21 20 30 382 1915-1919 1 1 7 36 40 324 0 1 14 24 9 39 496 1920-1924 0 31 59 148 92 679 0 0 42 42 32 67 1,192 1925-1929 1 36 91 154 112 532 0 3 47 55 46 82 1,159 1930-1934 0 51 103 256 180 1,131 0 6 42 72 50 109 2,000 1935-1939 0 50 106 290 209 1,347 1 1 62 85 69 105 2,325 1940-1944 1 41 98 256 268 1,270 0 0 31 31 49 103 2,148 1945-1949 5 44 96 275 207 898 1 3 31 50 42 66 1,718 1950-1954 2 95 125 591 623 2,470 0 4 67 104 95 219 4,395 1955-1959 8 97 186 946 630 2,534 5 4 49 149 132 260 5,000 1960-1964 23 51 102 797 707 3,824 4 10 56 150 192 499 6,415 1965-1969 24 44 86 736 650 3,357 14 12 73 125 155 400 5,676 1970-1974 11 74 60 606 535 3,159 5 12 60 167 159 453 5,301 1975-1979 7 27 53 532 432 3,038 4 10 31 145 115 420 4,814 1980-1984 1 35 45 365 359 2,596 7 2 51 109 108 273 3,951 1985-1989 1 36 41 258 236 2,473 7 4 67 161 123 306 3,713 1990-1994 0 51 77 268 244 2,353 2 14 52 74 76 210 3,421 1995-1999 4 26 70 181 169 1,701 0 2 21 55 57 146 2,432 2000-2004 4 35 28 81 90 1,101 2 4 20 21 31 89 1,506 Totals 93 831 1,456 6,777 5,739 34,478 52 93 857 1,714 1,600 3,948 57,638

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From page 10...

... NCHRP 24-25 Page 10 Phase II Final Report 1.2. Performance-Based versus Traditional Design Practice This report focuses on estimating the vulnerability of bridges with unknown foundations to hazards that might cause these bridges to fail unexpectedly, which is obviously an important aspect of performance.

Read the entire page →

From page 11...

... NCHRP 24-25 Page 11 Phase II Final Report that unsatisfactory performance (e.g., the functional objective is not met) will occur.

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From page 12...

... NCHRP 24-25 Page 12 Phase II Final Report increased flexibility in the design process and contribute to cost-efficiencies in a design that meet facility specific requirements and desired performance goals.

Read the entire page →

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