| RTE I86 over Ischua Creek | Poor | 325.1 ft | 6,790 | 1972 |
| RTE 16 over Gates Creek | Poor | 82.0 ft | 5,437 | 1934 |
| RTE 16 over Saunders Creek | Poor | 26.9 ft | 5,437 | 1934 |
| RTE 16 over Lime Lake Outlet | Poor | 25.9 ft | 4,878 | 1934 |
| RTE 305 over Deer Creek | Poor | 35.1 ft | 2,597 | 1945 |
| RTE 242 over Great Valley Creek | Poor | 69.9 ft | 1,988 | 1957 |
| RTE 62 over Conewango Creek | Poor | 48.9 ft | 1,278 | 1934 |
| RTE 280 over Wolf Run Creek | Poor | 24.0 ft | 667 | 1966 |
| County Road 9 over Lit Conewango Crk | Poor | 32.2 ft | 344 | 1930 |
| County Road 21 over Elton Creek | Poor | 62.0 ft | 303 | 1910 |
| Bone Run Road over Bone Run | Poor | 37.1 ft | 303 | 1953 |
| Galen Hill Road over Clear Creek | Poor | 55.1 ft | 223 | 1980 |
| RTE 951t over Cold Spring Creek | Poor | 66.9 ft | 181 | 1928 |
| Mill Street over Br Little Valley | Poor | 29.9 ft | 142 | 1938 |
| Pierce Hill Road over Ischua Creek | Poor | 100.1 ft | 120 | 1976 |
| Cain Hollow Road over Quaker Run | Poor | 63.0 ft | 114 | 1967 |
| Heddon Hollow RD over Haskell Creek | Poor | 37.1 ft | 111 | 1937 |
| RTE 951r over Allegheny River | Poor | 350.1 ft | 100 | 1925 |
| White Road over Buttermilk Creek | Poor | 24.9 ft | 98 | 1926 |
| Pope Road over Elm Creek | Poor | 40.0 ft | 98 | 1981 |
| County Road 15 over Dublin Creek | Poor | 29.9 ft | 98 | 1964 |
| Sisson Road over Ischua Creek | Poor | 22.0 ft | 92 | 1970 |
| Morgan Hollow RD over Forks Creek | Poor | 23.0 ft | 58 | 1972 |
| Witt Road over Trib Clear Creek | Poor | 29.9 ft | 43 | 1981 |
| Kruse Road over Beaver Meadows Ck | Poor | 27.9 ft | 36 | 1982 |
| Hotchkiss Holl RD over Hotchkiss Run | Poor | 24.9 ft | 26 | 1988 |
| Lonkto Hollow Road over Bay State Brook | Poor | 24.0 ft | 21 | 1986 |
| Baxter Mill Road over Ischua Creek | Poor | 105.0 ft | 18 | 1893 |
| Kent RD over Mansfield Creek | Poor | 40.0 ft | 0 | 1935 |
| RTE 417 over Olean Creek | Fair | 164.0 ft | 14,592 | 1929 |
| RTE 16 over Cattaraugus Creek | Fair | 230.0 ft | 12,864 | 1988 |
| RTE I86 over Allegheny River | Fair | 768.0 ft | 11,973 | 1987 |
| RTE I86 over Godfrey Hllow Brk | Fair | 44.0 ft | 11,480 | 1972 |
| RTE 417 over Western Ny & Pennsylvani | Fair | 152.9 ft | 10,097 | 1990 |
| RTE 16 over Olean Creek | Fair | 204.1 ft | 9,880 | 1966 |
| RTE I86 over Red House Brook | Fair | 44.0 ft | 9,570 | 1966 |
| RTE 219 over Allegheny River | Fair | 891.1 ft | 9,512 | 1984 |
| RTE I86 over Buffalo.& Pittsburgh Is | Fair | 206.0 ft | 9,200 | 1986 |
| RTE I86 over Allegheny River | Fair | 912.1 ft | 9,200 | 1986 |
| RTE 16 over Cheny Brook | Fair | 56.1 ft | 8,143 | 1988 |
| RTE I86 over Battle Creek | Fair | 38.1 ft | 7,299 | 1972 |
| RTE I86 over Lit.conewango Crk | Fair | 32.2 ft | 7,299 | 1972 |
| RTE I86 over Hastings Road | Fair | 100.1 ft | 6,790 | 1972 |
| RTE I86 over Olean Creek | Fair | 259.8 ft | 6,790 | 1972 |
| RTE I86 over Gile Hollow Road | Fair | 100.1 ft | 6,790 | 1972 |
| RTE 417 over Butternut Brook | Fair | 29.9 ft | 6,406 | 1951 |
| RTE I86 over Wny&pa Rr | Fair | 378.0 ft | 6,157 | 1973 |
| RTE I86 over River Street Olean Cree | Fair | 358.9 ft | 6,157 | 1973 |
| RTE 219 over Crowley Creek | Fair | 25.9 ft | 6,083 | 1953 |
| RTE 219 over Connoisarauley CR | Fair | 26.9 ft | 6,083 | 1956 |
| RTE 219 over Connoisarauley CR | Fair | 27.9 ft | 6,083 | 1956 |
| RTE 417 over Five Mile Creek | Fair | 91.9 ft | 6,069 | 1980 |
| RTE I86 over South Nine Mile Road | Fair | 118.1 ft | 6,049 | 1988 |
| RTE I86 over RTE 417 Allegheny River | Fair | 1940.9 ft | 6,049 | 1988 |
| RTE I86 over South Nine Mile Road | Fair | 118.1 ft | 5,987 | 1988 |
| RTE I86 over RTE 417 Allegheny River | Fair | 2000.0 ft | 5,987 | 1988 |
| RTE 242 over Little Valley Crk | Fair | 54.1 ft | 5,968 | 1940 |
| RTE 394 over Lit Conewango C | Fair | 74.1 ft | 5,892 | 2003 |
| RTE I86 over Wny&pa Rr | Fair | 353.0 ft | 5,845 | 1973 |
| RTE I86 over River Street Olean Cree | Fair | 372.0 ft | 5,845 | 1973 |
| RTE I86 over Five Mile Road | Fair | 102.0 ft | 5,764 | 1973 |
| RTE 417 over Allegheny River | Fair | 653.9 ft | 5,750 | 1957 |
| Five Mile RD over Allegheny River | Fair | 399.9 ft | 5,735 | 1973 |
| RTE I86 over State Park Avenue | Fair | 65.9 ft | 5,655 | 1980 |
| RTE I86 over RTE 951m Townsend Creek | Fair | 222.1 ft | 5,655 | 1984 |
| RTE 353 over Little Valley Crk | Fair | 94.2 ft | 5,651 | 1948 |
| RTE 353 over Whig Street Creek | Fair | 40.0 ft | 5,651 | 1941 |
| RTE 353 over Little Valley Crk | Fair | 78.1 ft | 5,651 | 1941 |
| RTE 353 over Little Valley Creek | Fair | 39.0 ft | 5,651 | 1992 |
| RTE 16 over Branch Olean Crk | Fair | 26.9 ft | 5,408 | 1937 |
| RTE 16 over Scott Branch Crk | Fair | 27.9 ft | 5,408 | 1947 |
| RTE 16 over Oil Creek | Fair | 113.8 ft | 5,408 | 1947 |
| RTE 219 over Great Valley Crk | Fair | 169.9 ft | 5,318 | 1960 |
| RTE 219 over Great Valley Creek | Fair | 170.9 ft | 5,318 | 1998 |
| RTE 219 over Wrights Creek | Fair | 113.8 ft | 5,318 | 1994 |
| RTE 219 over Br Great Valley Creek | Fair | 27.9 ft | 5,296 | 1950 |
| RTE 219 over Plum Creek | Fair | 24.9 ft | 5,296 | 1950 |
| RTE I86 over Hastings Road | Fair | 100.1 ft | 5,279 | 1972 |
| RTE I86 over Olean Creek | Fair | 261.2 ft | 5,279 | 1972 |
| RTE I86 over Union Valley Road Union | Fair | 128.0 ft | 5,279 | 1972 |
| RTE I86 over Gile Hollow Road | Fair | 100.1 ft | 5,279 | 1972 |
| RTE I86 over 16 16 51013057 RTE 16 | Fair | 164.0 ft | 5,279 | 1972 |
| RTE I86 over Five Mile RD | Fair | 102.0 ft | 5,178 | 1973 |
| RTE 16 over Allegheny River | Fair | 532.2 ft | 5,115 | 1955 |
| RTE 16 over Ischua Creek | Fair | 82.0 ft | 4,878 | 1994 |
| RTE I86 over Main Street | Fair | 145.0 ft | 4,874 | 1971 |
| Main Street over Allegheny River | Fair | 393.0 ft | 4,817 | 1990 |
| RTE I86 over 16 16 51013057 RTE 16 | Fair | 164.0 ft | 4,801 | 1972 |
| RTE I86 over RTE 950a | Fair | 95.1 ft | 4,720 | 1971 |
| RTE I86 over Allegheny River | Fair | 608.9 ft | 4,720 | 1965 |
| RTE 16 over Ischua Creek | Fair | 100.1 ft | 4,683 | 1993 |
| RTE 16 over Unnamed Stream | Fair | 24.0 ft | 4,683 | 1977 |
| RTE 98 over Clear Creek | Fair | 92.8 ft | 4,480 | 1966 |
| RTE I86 over State Park Avenue | Fair | 65.9 ft | 4,459 | 1980 |
| RTE I86 over RTE 951m Townsend Creek | Fair | 185.0 ft | 4,459 | 1984 |
| RTE 952m over Battle Creek | Fair | 41.0 ft | 4,148 | 2004 |
| RTE 952w over 86i 17 51123127 RTE I86 | Fair | 290.0 ft | 4,032 | 1973 |
| RTE I86 over Red House RD Exit Ramp F | Fair | 113.8 ft | 4,023 | 1970 |
| RTE I86 over Allegheny River | Fair | 608.9 ft | 3,937 | 1967 |
| RTE 394 over Elm Creek | Fair | 79.1 ft | 3,890 | 1932 |
| RTE I86 over Corbett Hill Road | Fair | 94.2 ft | 3,783 | 1971 |
| RTE 16 over Farwell Hollow | Fair | 24.9 ft | 3,664 | 2008 |
| RTE 16 over Branch Ischua Creek | Fair | 24.9 ft | 3,664 | 2008 |
| RTE I86 over Main Street | Fair | 145.0 ft | 3,650 | 1971 |
| RTE I86 over Corbett Hill Road | Fair | 94.2 ft | 3,650 | 1971 |
| RTE 219 over Western Ny & Penn | Fair | 507.9 ft | 3,425 | 1985 |
| RTE 417 over Tenmile Creek | Fair | 26.9 ft | 3,122 | 1930 |
| RTE 417 over Nine Mile Creek | Fair | 25.9 ft | 3,122 | 1930 |
| RTE 305 over Oswayo Stream | Fair | 265.1 ft | 3,040 | 1964 |
| RTE 98 over Relief | Fair | 153.9 ft | 2,711 | 1988 |
| RTE 98 over Clear Creek | Fair | 74.1 ft | 2,711 | 1968 |
| RTE 353 over Br Cattaraugus Creek | Fair | 29.9 ft | 2,596 | 1998 |
| RTE 353 over Cattaraugus Creek Feeder | Fair | 77.1 ft | 2,596 | 1998 |
| Five Mile Road over Five Mile Creek | Fair | 58.1 ft | 2,438 | 2002 |
| RTE 39 over Thatcher Brook | Fair | 44.0 ft | 2,259 | 1987 |
| RTE 242 over Great Valley Creek | Fair | 69.9 ft | 1,988 | 1955 |
| RTE 242 over Spring Creek | Fair | 47.2 ft | 1,953 | 1997 |
| RTE 242 over Feeder Lit Valley Creek | Fair | 82.0 ft | 1,953 | 1993 |
| RTE 62 over Thatcher Brook | Fair | 55.1 ft | 1,775 | 1985 |
| RTE 62 over Thatcher Brook | Fair | 66.9 ft | 1,775 | 1985 |
| RTE 62 over Thatcher Brook | Fair | 44.9 ft | 1,775 | 1934 |
| RTE 446 over Painterlick Crk | Fair | 24.0 ft | 1,765 | 1969 |
| RTE 16 over 86i 17 51124018 RTE I86 | Fair | 196.9 ft | 1,636 | 1973 |
| Ramp J At Exit 26 over Erie Street Western Ny | Fair | 234.9 ft | 1,636 | 1973 |
| County Road 18 over Wrights Creek | Fair | 96.1 ft | 1,604 | 2002 |
| County Road 29 over Mix Creek | Fair | 28.9 ft | 1,505 | 1988 |
| RTE 98 over Forks Crk. Feeder | Fair | 24.9 ft | 1,493 | 1927 |
| RTE 98 over Storrs Creek | Fair | 82.0 ft | 1,493 | 1989 |
| RTE 98 over Ischua Creek | Fair | 67.9 ft | 1,493 | 1926 |
| RTE 98 over Gates Creek | Fair | 64.0 ft | 1,493 | 1927 |
| RTE 62 over Mud Creek | Fair | 60.0 ft | 1,489 | 1944 |
| Freedom Road over Clear Creek | Fair | 44.9 ft | 1,353 | 1989 |
| RTE 62 over Johnson Creek | Fair | 26.9 ft | 1,315 | 2004 |
| County Road 86 over Buttermilk Creek | Fair | 36.1 ft | 1,290 | 1995 |
| RTE 62 over State Drain Ditch | Fair | 92.8 ft | 1,278 | 1934 |
| RTE 241 over Willis Creek | Fair | 26.9 ft | 1,270 | 1936 |
| RTE 241 over Conewango Feeder | Fair | 25.9 ft | 1,270 | 1939 |
| County Road 12 over SB Cattaraugus Ck | Fair | 35.1 ft | 1,259 | 2003 |
| Freedom Road over Clear Creek | Fair | 40.0 ft | 1,241 | 1995 |
| RTE 242 over Beaver Meadows Ck | Fair | 40.0 ft | 1,227 | 1932 |
| RTE 242 over Devereaux Br Fd | Fair | 26.9 ft | 1,227 | 1933 |
| RTE 242 over Devereaux Br Fd | Fair | 24.9 ft | 1,227 | 1933 |
| RTE 242 over Devereaux Br Fd | Fair | 30.8 ft | 1,227 | 1933 |
| RTE 394 over Western Ny & Penn | Fair | 301.8 ft | 1,193 | 1965 |
| RTE 394 over Cold Stream Brook | Fair | 23.0 ft | 1,193 | 1967 |
| Temple Street over Dodge Creek | Fair | 107.0 ft | 1,173 | 1994 |
| Mill Street over Lime Lake Outlet | Fair | 60.0 ft | 1,131 | 1990 |
| Pigeon Hill Road over Elton Creek | Fair | 122.0 ft | 1,047 | 1978 |
| Mckinstry Road over Elton Creek | Fair | 106.0 ft | 995 | 1977 |
| S. Chapel Street over Thatcher Brook | Fair | 39.0 ft | 936 | 1987 |
| Larkin ST over 86i 17 51121040 RTE I86 | Fair | 234.9 ft | 895 | 1971 |
| Toad Hollow Road over Eddyville Creek | Fair | 30.2 ft | 872 | 1967 |
| County Road 21 over Elton Creek | Fair | 111.9 ft | 845 | 1989 |
| County Road 12 over S Br Cattaraugus Creek | Fair | 75.1 ft | 845 | 1970 |
| County Road 12 over S Br Cattaraugus | Fair | 58.1 ft | 845 | 1960 |
| Eagle Street over Clear Creek | Fair | 54.1 ft | 834 | 1980 |
| Boyce Hill Road over Boyce Run | Fair | 78.1 ft | 812 | 1991 |
| Leon Road over Trb Conewango Crk | Fair | 24.9 ft | 737 | 2004 |
| RTE 240 over Gooseneck Creek | Fair | 29.9 ft | 727 | 1993 |
| County Road 6 over Trb Conewango Crk | Fair | 24.9 ft | 714 | 1995 |
| County Road 27 over Wolf Run Creek | Fair | 55.1 ft | 707 | 2000 |
| Chapin Cross Road over Five Mile Creek | Fair | 63.0 ft | 686 | 1969 |
| Gooseneck Road over Gooseneck Creek | Fair | 29.9 ft | 685 | 1984 |
| Union Valley Road over Olean Creek | Fair | 166.0 ft | 678 | 1988 |
| RTE 280 over Quaker Lake Outlt | Fair | 82.0 ft | 667 | 1965 |
| Mosher Hollow RD over Trb Conewango Crk | Fair | 24.0 ft | 667 | 2004 |
| RTE 280 over 86i 17 51021127 RTE I86 | Fair | 195.9 ft | 667 | 1967 |
| Church Street over Elton Creek | Fair | 34.1 ft | 635 | 1987 |
| RTE 240 over Beaver Meadows CR | Fair | 29.9 ft | 627 | 1992 |
| IRR RTE 955r over Cattaraugus Creek | Fair | 401.9 ft | 614 | 1987 |
| Meyers Corners RD over Conewango Creek | Fair | 42.0 ft | 613 | 1983 |
| County Road 19 over Five Mile Creek | Fair | 48.9 ft | 604 | 1993 |
| Bray Road over Clear Creek | Fair | 96.5 ft | 582 | 1970 |
| Mosher Hollow RD over Conewango Creek | Fair | 37.1 ft | 576 | 1992 |
| County Road 24 over Trib Gates Creek | Fair | 27.9 ft | 531 | 1995 |
| Abbotts Road over Trib Of Cuba Lake | Fair | 68.9 ft | 517 | 2006 |
| Pigeon Valley RD over Peaslee Hollow CR | Fair | 25.9 ft | 509 | 1993 |
| Hill Street over Thatcher Brook | Fair | 29.9 ft | 498 | 1968 |
| Bailey Drive over Tunungwant Creek | Fair | 113.8 ft | 497 | 1978 |
| Martha Street over Great Valley Crk | Fair | 77.1 ft | 478 | 1998 |
| Hardy Corners RD over Saunders Creek | Fair | 40.0 ft | 458 | 1979 |
| County Road 13 over Jersey Hollow Crk | Fair | 24.9 ft | 457 | 1991 |
| Five Mile Road over Br Five Mile Crk | Fair | 30.8 ft | 443 | 1987 |
| County Road 68 over SB Cattaraugus Ck | Fair | 39.0 ft | 423 | 1961 |
| East Flats Road over East Otto Creek | Fair | 60.0 ft | 399 | 1983 |
| County Road 13 over Mansfield Creek | Fair | 42.0 ft | 396 | 1986 |
| County Road 13 over Trib. To Cattaraugus Cre | Fair | 51.8 ft | 396 | 2017 |
| Mosher Hollow RD over Trb Conewango Crk | Fair | 28.9 ft | 391 | 2006 |
| Abbotts Road over Trib Of Cuba Lake | Fair | 40.0 ft | 391 | 1987 |
| Creek Road over Elton Creek | Fair | 80.1 ft | 381 | 1997 |
| Allegany State Par over Quaker Run | Fair | 44.0 ft | 370 | 1991 |
| Hinman Hollow RD over Mansfield Creek | Fair | 29.9 ft | 363 | 1960 |
| Five Mile Road over Hardscrabble Creek | Fair | 35.1 ft | 335 | 2000 |
| County Road 15 over Dublin Creek | Fair | 42.0 ft | 329 | 1962 |
| N Nine Mile Ck RD over Nine Mile Creek | Fair | 35.1 ft | 328 | 1992 |
| N Nine Mile Road over Nine Mile Creek | Fair | 33.1 ft | 328 | 1992 |
| County Road 14 over Br Lit Valley Crk | Fair | 29.9 ft | 324 | 1963 |
| Junction RD over Ischua Creek | Fair | 49.9 ft | 318 | 2002 |
| Aleg State Park 1 over Red House Brook | Fair | 172.9 ft | 317 | 1940 |
| Sparks Road over Clear Creek | Fair | 71.9 ft | 311 | 1983 |
| Underwood Cors RD over Cold Spring Creek | Fair | 49.9 ft | 304 | 1963 |
| Bone Run Road over Bone Run Creek | Fair | 41.0 ft | 303 | 1982 |
| Underwood Road over 86i 17 51125064 RTE I86 | Fair | 255.9 ft | 291 | 1972 |
| IRR RTE 951r over Bucktooth Run | Fair | 94.2 ft | 285 | 1998 |
| Bowen Road over Battle Creek | Fair | 42.0 ft | 271 | 1993 |
| Bowen Road over Battle Creek | Fair | 43.3 ft | 271 | 1995 |
| County Road 24 over Gates Creek | Fair | 29.9 ft | 263 | 1985 |
| Dutch Hill Road over Branch Little Valley Cre | Fair | 35.1 ft | 254 | 1992 |
| Bowen Road over Brch Battle Creek | Fair | 24.9 ft | 240 | 1997 |
| Allegany ST Pk 2 over Red House Brook | Fair | 44.9 ft | 239 | 1935 |
| County Road 21 over S Br Elton Creek | Fair | 75.1 ft | 233 | 1973 |
| County Road 21 over Trib Elton Creek | Fair | 24.9 ft | 233 | 1988 |
| Howe Hill Road over Wrights Creek | Fair | 40.0 ft | 225 | 1937 |
| Hinman Hollow RD over Mansfield Creek | Fair | 22.0 ft | 222 | 1987 |
| Lindberg Road over Mansfield Creek | Fair | 30.8 ft | 214 | 1970 |
| Allegany ST Pk 2a over Red House Brook | Fair | 46.9 ft | 210 | 1935 |
| Ireland Road over Lit Conewango Crk | Fair | 29.9 ft | 202 | 1989 |
| Creek Road over Gun Barrel Creek | Fair | 32.2 ft | 196 | 1991 |
| Hinman Hollow RD over Mansfield Creek | Fair | 30.8 ft | 191 | 1965 |
| Hinman Hollow RD over Mansfield Creek | Fair | 29.9 ft | 191 | 1963 |
| Scott Corners Rd. over Mansfield Creek | Fair | 60.0 ft | 185 | 1981 |
| Sawmill Run Road over S Br Sawmill Run | Fair | 29.9 ft | 185 | 1981 |
| Sawmill Run Road over N Br Sawmill Run | Fair | 30.8 ft | 185 | 1967 |
| First Street over Little Valley Crk | Fair | 36.1 ft | 180 | 1993 |
| Church Road over Five Mile Creek | Fair | 47.6 ft | 163 | 1992 |
| Wolf Road over Conewango Creek | Fair | 69.9 ft | 161 | 1994 |
| Jollytown Road over Haskell Creek | Fair | 29.9 ft | 157 | 1978 |
| Cadiz Road over Storrs Creek | Fair | 36.1 ft | 151 | 1997 |
| Beaver Meadows RD over Beaver Meadows Creek | Fair | 37.1 ft | 143 | 1998 |
| Frog Valley Road over W B Conewango Crk | Fair | 54.1 ft | 141 | 1985 |
| Northeast Road over N Br Mill Creek | Fair | 29.9 ft | 139 | 1991 |
| Hammond Hill Road over Connoisarauley CR | Fair | 59.1 ft | 139 | 1972 |
| Flatiron Road over Mud Creek | Fair | 42.0 ft | 139 | 1980 |
| Flatiron Road over Mud Creek | Fair | 49.9 ft | 139 | 1989 |
| Flat Iron Road over Mill Creek | Fair | 37.1 ft | 133 | 1992 |
| Flat Iron Road over Mud Creek | Fair | 40.0 ft | 133 | 1984 |
| County Road 75 over East Otto Creek | Fair | 29.9 ft | 131 | 1976 |
| Yubadam Road over Dodge Creek | Fair | 45.9 ft | 131 | 1971 |
| IRR RTE 951r over 86i 17 51121185 RTE I86 | Fair | 185.0 ft | 130 | 1967 |
| Blue Street over Elton Creek | Fair | 40.0 ft | 121 | 1981 |
| Waite Hollow Road over Waite Hollw Creek | Fair | 28.9 ft | 116 | 1991 |
| Gulf Road over Br Conewango Crk | Fair | 28.9 ft | 109 | 1981 |
| Eldridge Road over Mud Creek | Fair | 49.9 ft | 105 | 1987 |
| Town Line Road over Gates Creek | Fair | 44.9 ft | 101 | 1991 |
| Town Hill Road over Mud Creek | Fair | 32.2 ft | 94 | 1951 |
| Farwell Road over Ischua Creek | Fair | 102.0 ft | 92 | 1891 |
| Bozard Hill Road over Wrights Creek | Fair | 26.9 ft | 85 | 1938 |
| Leon Road over Conewango Creek | Fair | 34.1 ft | 77 | 2006 |
| Reynolds Road over Ischua Creek | Fair | 46.9 ft | 72 | 1983 |
| Kent Road over Ischua Creek | Fair | 109.9 ft | 69 | 1980 |
| Older Hill Road over Elton Creek | Fair | 34.1 ft | 63 | 1952 |
| Hastings Road over Olean Creek | Fair | 230.0 ft | 61 | 1986 |
| Watson Road over Trib Cattaraugus Creek | Fair | 29.9 ft | 57 | 1985 |
| Morgan Hollow Rd. over Morgan Hollow Crk | Fair | 30.5 ft | 47 | 1979 |
| Earl Seaton Road over Cold Spring Creek | Fair | 50.5 ft | 45 | 1995 |
| Woodworth Hollow over Little Valley Crk | Fair | 55.1 ft | 42 | 1986 |
| Gulf Road over Lit Conewango Crk | Fair | 38.1 ft | 41 | 1970 |
| Bozard Hill Road over Wrights Creek | Fair | 27.9 ft | 40 | 1938 |
| Bozard Hill Road over Wrights Creek | Fair | 27.9 ft | 40 | 1938 |
| Jones Road over Clear Creek | Fair | 60.0 ft | 37 | 1997 |
| Geiger Hollow RD over Four Mile Creek | Fair | 24.0 ft | 32 | 1955 |
| Fancy Tract Road over Devereaux Branch | Fair | 32.2 ft | 32 | 1971 |
| Swamp Road over Lit Conewango Crk | Fair | 35.1 ft | 29 | 1963 |
| Hotchkiss Hollow over Hotchkiss Run | Fair | 24.0 ft | 26 | 1977 |
| Church Road over Five Mile Creek | Fair | 29.9 ft | 23 | 1983 |
| Sunfish Road over Sunfish Run Creek | Fair | 29.9 ft | 16 | 1905 |
| Depot Street over Clear Creek | Fair | 47.9 ft | 15 | 1939 |
| Town Line Road over Little Valley Crk | Fair | 69.9 ft | 11 | 1973 |
| Whipple Road over Cold Spring Creek | Fair | 40.0 ft | 10 | 1976 |
| Marsh Road over Mud Creek | Fair | 58.1 ft | 9 | 2002 |
| RTE 417 over Olean Trail | Good | 51.8 ft | 14,595 | 2009 |
| RTE I86 over RTE 219 | Good | 144.0 ft | 11,973 | 1987 |
| RTE 417 over Haskell Creek | Good | 87.9 ft | 10,753 | 1996 |
| RTE 417 over Dodge Creek | Good | 75.1 ft | 10,753 | 1951 |
| Main Street over Olean Creek | Good | 161.1 ft | 10,428 | 1950 |
| RTE I86 over Bay State Brook | Good | 24.0 ft | 9,570 | 1967 |
| RTE 219 over Leonard Brook | Good | 29.9 ft | 9,512 | 2019 |
| RTE 219 over State Line Brook | Good | 24.0 ft | 9,512 | 1958 |
| RTE 219 over Nichols Run | Good | 30.8 ft | 9,512 | 2023 |
| RTE I86 over Cold Spring Creek | Good | 33.1 ft | 9,440 | 1967 |
| RTE 62 over Cattaraugus Creek | Good | 128.0 ft | 9,101 | 1963 |
| RTE 219 over Crowley Creek | Good | 38.1 ft | 8,690 | 2022 |
| RTE I86 over Branch Of Cold Spring CR | Good | 21.0 ft | 7,299 | 1972 |
| RTE I86 over Gull Brook | Good | 34.4 ft | 6,790 | 2006 |
| RTE I86 over Union Valley Road Union | Good | 128.0 ft | 6,790 | 1972 |
| RTE I86 over Fay Hollow Road | Good | 101.0 ft | 6,790 | 1972 |
| RTE I86 over Schoolhouse Road | Good | 118.8 ft | 6,256 | 1968 |
| RTE I86 over Buffalo Street Buffalo | Good | 163.1 ft | 6,157 | 1973 |
| RTE I86 over Johnson St. | Good | 102.0 ft | 6,157 | 1973 |
| RTE 242 over Tb Lit Valley Crk | Good | 44.0 ft | 5,968 | 1992 |
| RTE I86 over Buffalo Street Buffalo | Good | 160.1 ft | 5,845 | 1973 |
| RTE I86 over Johnson Street | Good | 102.0 ft | 5,845 | 1973 |
| RTE I86 over Five Mile Creek | Good | 134.8 ft | 5,764 | 1973 |
| RTE I86 over RTE 417 | Good | 102.0 ft | 5,655 | 1980 |
| Cascade Road / Mil over Cattaraugus Creek | Good | 628.0 ft | 5,444 | 2017 |
| RTE 16 over Western Ny & Penn | Good | 309.1 ft | 5,408 | 1995 |
| RTE 219 over Great Valley Crk | Good | 151.9 ft | 5,318 | 1997 |
| RTE 219 over Great Valley Creek | Good | 91.9 ft | 5,296 | 1992 |
| RTE I86 over Gull Brook | Good | 34.4 ft | 5,279 | 2007 |
| RTE I86 over Fay Hollow Road | Good | 101.0 ft | 5,279 | 1972 |
| RTE I86 over Ischua Creek | Good | 356.0 ft | 5,279 | 1972 |
| RTE I86 over Five Mile Creek | Good | 131.9 ft | 5,178 | 1973 |
| RTE I86 over Schoolhouse Road | Good | 118.8 ft | 5,125 | 1968 |
| RTE 16 over Elton Creek | Good | 98.1 ft | 4,878 | 1964 |
| Five Mile Road over Smith Hollow | Good | 22.0 ft | 4,811 | 2001 |
| RTE I86 over Oil Creek Channel | Good | 186.0 ft | 4,801 | 1972 |
| RTE I86 over Red House RD Exit Ramp F | Good | 113.8 ft | 4,785 | 1970 |
| RTE 219 over Great Valley Crk | Good | 162.1 ft | 4,753 | 1994 |
| RTE 219 over Windfall Creek | Good | 30.8 ft | 4,753 | 1964 |
| RTE 16 over Brch Ischua Creek | Good | 51.8 ft | 4,683 | 1993 |
| RTE I86 over Oil Creek Channel | Good | 186.0 ft | 4,534 | 1972 |
| RTE I86 over RTE 417 | Good | 105.0 ft | 4,459 | 1980 |
| RTE 353 over Allegheny River | Good | 722.1 ft | 4,157 | 2011 |
| RTE 219 over 219 219 51133341 RTE 21 | Good | 225.1 ft | 4,036 | 2010 |
| RTE I86 over RTE 950a | Good | 95.1 ft | 3,937 | 1971 |
| RTE 16 over Branch Ischua Creek | Good | 23.0 ft | 3,664 | 1971 |
| RTE 16 over Branch Ischua Creek | Good | 24.9 ft | 3,664 | 2007 |
| RTE 242 over Dublin Hollow Ck | Good | 75.1 ft | 3,321 | 1994 |
| N Seventh Street over 86i 17 51123149 RTE I86 | Good | 246.1 ft | 2,854 | 1973 |
| RTE 98 over Clear Creek Trib. | Good | 33.1 ft | 2,711 | 1968 |
| RTE 353 over Br Cattaraugus Ck | Good | 128.0 ft | 2,596 | 1980 |
| River Road over Four Mile Creek | Good | 29.9 ft | 2,532 | 1987 |
| RTE 219 over Cattaraugus Crk | Good | 733.9 ft | 2,300 | 2010 |
| RTE 219 over Cattaraugus Creek | Good | 733.9 ft | 2,300 | 2010 |
| RTE 219 over Schwartz Road | Good | 113.8 ft | 2,300 | 2010 |
| RTE 219 over Schwartz RD | Good | 113.8 ft | 2,300 | 2010 |
| Connoisarauley RD over Connoisarauley CR | Good | 34.1 ft | 2,183 | 1999 |
| Mill Street over Great Valley Crk | Good | 61.0 ft | 2,152 | 1988 |
| RTE 242 over Irish Hill Brook | Good | 26.9 ft | 1,988 | 1973 |
| Windfall Road over Private Roadway | Good | 25.9 ft | 1,918 | 1991 |
| County Road 12 over SB Cattaraugus Creek | Good | 44.9 ft | 1,735 | 2001 |
| County Road 18 over Wrights Creek | Good | 99.1 ft | 1,627 | 2005 |
| County Road 18 over Trib. Wrights Crk | Good | 24.0 ft | 1,627 | 2005 |
| County Road 18 over Wrights Creek | Good | 166.0 ft | 1,624 | 2001 |
| West State Street over Little Valley Crk | Good | 122.0 ft | 1,515 | 2009 |
| RTE 98 over Branch Forks Crk | Good | 25.9 ft | 1,493 | 2001 |
| RTE 98 over Feeder Ischua Creek | Good | 35.1 ft | 1,492 | 2004 |
| RTE 98 over Carpenter Brook | Good | 30.8 ft | 1,492 | 2004 |
| RTE 62 over Mill Creek | Good | 95.1 ft | 1,489 | 1993 |
| RTE 62 over Conewango Creek | Good | 98.1 ft | 1,489 | 2005 |
| County Road 12 over S Br Catt Creek | Good | 108.9 ft | 1,387 | 1999 |
| County Road 12 over S Br Cattaraugus | Good | 83.7 ft | 1,387 | 1991 |
| RTE 240 over Cattaraugus Creek | Good | 491.1 ft | 1,328 | 2006 |
| Freedom Road over Clear Creek | Good | 65.9 ft | 1,283 | 2015 |
| RTE 62 over Mud Creek | Good | 104.0 ft | 1,278 | 2015 |
| RTE 394 over Battle Creek | Good | 61.0 ft | 1,272 | 2002 |
| RTE 242 over Devereaux Branch | Good | 96.1 ft | 1,227 | 2001 |
| Mill Street over Elton Creek | Good | 91.5 ft | 1,131 | 1977 |
| Elm Street over Ischua Creek | Good | 85.0 ft | 1,059 | 2001 |
| Main Street over Nichols Run | Good | 28.9 ft | 1,056 | 2008 |
| Fay Hollow Road over Olean Creek | Good | 128.9 ft | 964 | 1997 |
| Fay Hollow Road over Fay Hollow Creek | Good | 30.8 ft | 964 | 2001 |
| Martin Road over Forks Creek | Good | 78.1 ft | 914 | 2018 |
| County Road 25 over Rawson Creek | Good | 27.6 ft | 907 | 2007 |
| Toad Hollow Road over Mansfield Creek | Good | 49.9 ft | 872 | 1993 |
| County Road 14 over Br Little Vall Ck | Good | 27.9 ft | 872 | 1995 |
| Pine Street over Saunders Creek | Good | 25.9 ft | 786 | 1992 |
| Main Street over W B Conewango Crk | Good | 69.9 ft | 769 | 1994 |
| Steam Valley Road over Allegheny River | Good | 328.1 ft | 745 | 1991 |
| Delevan Elton RD over Elton Creek | Good | 111.9 ft | 741 | 1998 |
| Rawson Road over Br Caneadea Crk | Good | 44.9 ft | 739 | 1994 |
| County Road 71 over Somervlle Val Crk | Good | 33.1 ft | 733 | 1995 |
| County Road 27 over Haskell Creek | Good | 137.1 ft | 707 | 2016 |
| Gooseneck Road over Gooseneck Creek | Good | 29.9 ft | 685 | 2001 |
| Nine Mile Road over Chipmunk Creek | Good | 34.1 ft | 638 | 1984 |
| County Road 65 over Elm Creek | Good | 51.8 ft | 618 | 1985 |
| Mosher Hollow RD over Trb Conewango Crk | Good | 41.0 ft | 590 | 1989 |
| Gile Hollow Road over Ischua Creek | Good | 131.6 ft | 583 | 2020 |
| Mosher Hollow RD over Conewango Creek | Good | 24.9 ft | 576 | 1992 |
| Mosher Hollow RD over Conewango Creek | Good | 33.1 ft | 576 | 1993 |
| Mosher Hollow RD over Conewango Creek | Good | 53.1 ft | 559 | 2015 |
| Gile Hollow Road over Gull Brook | Good | 30.8 ft | 525 | 2003 |
| Gooseneck Road over Mckinstry Creek | Good | 29.9 ft | 521 | 1988 |
| County Road 21 over Elton Creek | Good | 98.1 ft | 520 | 2001 |
| County Road 11 over SB Cattaraugus Ck | Good | 91.9 ft | 511 | 2013 |
| RTE 951 over Phil Creek | Good | 106.0 ft | 486 | 2014 |
| Elm Creek Road over Elm Creek | Good | 27.9 ft | 479 | 2008 |
| Five Mile Road over Ischua Creek | Good | 127.0 ft | 472 | 2019 |
| Lebanon Road over Cold Spring Creek | Good | 88.9 ft | 433 | 2015 |
| County Road 71 over Forks Creek | Good | 97.4 ft | 426 | 1970 |
| Brewer Cross Road over Great Valley Crk | Good | 95.1 ft | 422 | 1989 |
| Allegany Road over Br Cold Spring CR | Good | 36.1 ft | 422 | 1951 |
| Bentley Road over Slab City Creek | Good | 56.1 ft | 417 | 1998 |
| Third Street over Br Little Valley | Good | 51.8 ft | 416 | 2001 |
| Dredge Road over Conewango Creek | Good | 77.8 ft | 411 | 2023 |
| County Road 13 over Trib Mansfield CR | Good | 32.2 ft | 396 | 1993 |
| Abbotts Road over Trib Of Cuba Lake | Good | 47.2 ft | 391 | 1995 |
| Mosher Hollow RD over Trb Conewango Crk | Good | 48.9 ft | 386 | 1991 |
| Mosher Hollow RD over Trb Conewango Crk | Good | 28.9 ft | 386 | 1991 |
| Bryant Hill Road over Bryant Hill Creek | Good | 25.9 ft | 371 | 1991 |
| IRR RTE 951r over Little Indian Crk | Good | 25.9 ft | 370 | 1992 |
| West River Road over Allegany River | Good | 204.1 ft | 369 | 1984 |
| N Ninth Street over Little Valley Crk | Good | 35.1 ft | 366 | 2011 |
| Hinman Hollow Road over Mansfield Creek | Good | 48.9 ft | 363 | 2022 |
| Allegany Road over Waite Creek | Good | 51.8 ft | 351 | 1951 |
| West Branch Road over Four Mile Creek | Good | 44.9 ft | 347 | 2003 |
| County Road 13 over Mansfield Creek | Good | 84.0 ft | 340 | 1990 |
| Johnson Street over Thatcher Brook | Good | 51.8 ft | 337 | 1995 |
| County Road 12 over Ex Buff & Pitts R.o. | Good | 24.9 ft | 333 | 2013 |
| Flannigan Hill over Western Ny & Penn | Good | 47.9 ft | 331 | 2003 |
| County Road 18 over Wrights Creek | Good | 51.8 ft | 329 | 1996 |
| County Road 18 over Trib. Wrights Crk | Good | 24.0 ft | 329 | 2002 |
| N. Ninemile Road over Nine Mile Crk | Good | 38.1 ft | 328 | 1987 |
| No. Nine Mile Road over Ninemile Creek | Good | 38.1 ft | 328 | 2008 |
| No.nine Mile Road over Ninemile Creek | Good | 50.9 ft | 328 | 1999 |
| Spring Street over Elm Creek | Good | 59.1 ft | 328 | 1997 |
| State Park Route 3 over Quaker Run | Good | 50.9 ft | 319 | 1993 |
| Van Etten Road over Thatcher Brook | Good | 25.9 ft | 318 | 2002 |
| Cowens Corners RD over Clear Creek | Good | 66.9 ft | 299 | 1986 |
| Cowens Corners RD over Conewango Dredge | Good | 109.9 ft | 299 | 1983 |
| Cowens Corners RD over Conewango Creek | Good | 62.0 ft | 299 | 2014 |
| Bakerstand Road over Br Great Vlly Crk | Good | 34.1 ft | 293 | 2007 |
| Underwood Road over Oil Creek | Good | 74.1 ft | 291 | 1993 |
| Ashford Hollow RD over Buttermilk Creek | Good | 40.0 ft | 287 | 2015 |
| County Road 6 over Mud Creek | Good | 44.9 ft | 281 | 1994 |
| County Road 6 over Mud Creek | Good | 59.1 ft | 281 | 2018 |
| County Road 6 over Mud Creek | Good | 63.3 ft | 281 | 2021 |
| County Road 6 over Mud Creek | Good | 45.3 ft | 281 | 2003 |
| Coal Chutes Road over Ischua Creek | Good | 127.0 ft | 279 | 1997 |
| Park Side Drive over Irish Brook | Good | 29.9 ft | 276 | 1993 |
| Coon Run Road over Quaker Run | Good | 35.1 ft | 276 | 1930 |
| Sugartown Road over Forks Creek | Good | 58.4 ft | 274 | 1973 |
| Xura Smith Road over Conewango Creek | Good | 64.0 ft | 265 | 2017 |
| Crumb Hill Road over East Otto Creek | Good | 39.0 ft | 247 | 2007 |
| Gypsy Road over Quaker Run | Good | 49.9 ft | 244 | 2021 |
| Parkside Drive over Limestone Brook | Good | 40.0 ft | 242 | 2003 |
| Allegany ST Pk 2 over Red House Brook | Good | 47.9 ft | 239 | 1995 |
| Whig Street over Whig Street Creek | Good | 30.8 ft | 236 | 1959 |
| Whig Street over Whig Street Creek | Good | 32.2 ft | 236 | 1987 |
| County Road 21 over S Br Elton Creek Quarry | Good | 94.2 ft | 233 | 1993 |
| Irvine Mills RD over Tunungwant Creek | Good | 200.1 ft | 230 | 2010 |
| County Road 24 over Trib To Cuba Lake | Good | 30.8 ft | 229 | 1969 |
| Utley Road over SB Cattaraugus Ck | Good | 53.1 ft | 225 | 1997 |
| Monroe Street over Great Valley Crk | Good | 75.5 ft | 220 | 2001 |
| Hungry Hollow RD over Trib Great Valley | Good | 25.9 ft | 218 | 1990 |
| North Otto Road over Waterman Brook | Good | 54.1 ft | 211 | 2010 |
| Jersey Hollow Road over Jersey Hollow Creek | Good | 32.5 ft | 210 | 2023 |
| Tannery Road over Trib S Br Catt CR | Good | 34.1 ft | 200 | 2021 |
| Pennsylvania Road over Fay Hollow Brook | Good | 43.0 ft | 190 | 2012 |
| Sawmill Run Road over N Br Sawmill Run | Good | 44.0 ft | 185 | 2003 |
| Sawmill Run Road over Sawmill Run Creek | Good | 45.9 ft | 185 | 1966 |
| Thomas Corners RD over Buttermilk Creek | Good | 115.2 ft | 159 | 2013 |
| Walker Road over Elm Creek | Good | 36.1 ft | 155 | 1985 |
| Kent Switch Road over Trb Conewango Crk | Good | 39.0 ft | 141 | 2001 |
| Beamer Road over Trib. Ischua Creek | Good | 32.2 ft | 139 | 2008 |
| Worden Road over Lime Lake Outlet | Good | 50.9 ft | 137 | 2003 |
| Eaton Cross Road over Fivemile Creek | Good | 62.0 ft | 134 | 2005 |
| Rohr Road over East Otto Creek | Good | 29.9 ft | 131 | 1978 |
| Very Road over Ischua Creek | Good | 46.9 ft | 120 | 2011 |
| Center Street over Battle Creek | Good | 53.1 ft | 116 | 2005 |
| Oldro Hill RD over 86i 17 51121091 RTE I86 | Good | 323.2 ft | 114 | 1971 |
| Willow Road over Willow Creek | Good | 29.9 ft | 109 | 1980 |
| Archer Hill Road over 86i 17 51121052 RTE I86 | Good | 221.1 ft | 96 | 1971 |
| Colvin Road over S Br Cattargus Ck | Good | 38.1 ft | 93 | 2001 |
| Dow Road over Br Clear Creek | Good | 22.0 ft | 92 | 1990 |
| Bay State Road over Red House Brook | Good | 49.9 ft | 81 | 1967 |
| County Road 12 over Connoisarauly Crk | Good | 45.9 ft | 77 | 2001 |
| Stoddard Road over Mill Creek | Good | 27.9 ft | 74 | 1991 |
| Northeast Road over Mill Creek | Good | 86.0 ft | 73 | 1997 |
| Dutch Hill Road over Ischua Creek | Good | 110.9 ft | 73 | 1993 |
| Dutch Hill Road over Western Ny & Penn Railro | Good | 127.0 ft | 73 | 1995 |
| Railroad Avenue over Br Little Valley | Good | 44.9 ft | 73 | 1997 |
| Scott Hollow Road over Lawrence Hollow Crk | Good | 38.1 ft | 71 | 2004 |
| Johnson Hollow RD over Trib Ischua Creek | Good | 24.9 ft | 68 | 1993 |
| Bay State Road over Bay State Brook | Good | 40.4 ft | 64 | 1993 |
| Bay State Road over Bay State Brook | Good | 45.9 ft | 64 | 1993 |
| Bay State Road over Bay State Brook | Good | 40.0 ft | 64 | 1999 |
| County Road 21 over Elton Creek | Good | 40.0 ft | 63 | 1990 |
| Meyer Hill Road over East Otto Creek | Good | 40.0 ft | 55 | 2013 |
| Alderbottom Road over Conewango Creek | Good | 40.0 ft | 51 | 1979 |
| Morgan Hollow RD over Morgan Hollow Crk | Good | 32.2 ft | 47 | 1994 |
| Forty Road over Trib S Br Catt CR | Good | 61.0 ft | 47 | 1995 |
| France Brook Road over France Brook | Good | 24.0 ft | 47 | 1992 |
| Fancy Tract Road over Beaver Meadows Ck | Good | 42.0 ft | 35 | 1992 |
| Flatstone Road over Chipmunk Creek | Good | 34.1 ft | 32 | 1993 |
| Quackenbush Road over Great Valley Crk | Good | 67.9 ft | 32 | 1993 |
| Wolf Run Road over Wolf Run Creek | Good | 55.1 ft | 28 | 1966 |
| Hotchkiss Hollow R over Hotchkiss Run | Good | 24.0 ft | 26 | 2016 |
| Camp Six Road over Quaker Run | Good | 41.0 ft | 24 | 1968 |
| Skinner Hollow RD over S Br Cattaraugus | Good | 110.6 ft | 18 | 2008 |
| Camp Ten Road over Red House Brook | Good | 47.9 ft | 10 | 1991 |
| Little Bone Run Ro over Little Bone Run | Good | 25.3 ft | 0 | 2016 |
| Goodwins Landing over Conewango Dredge | Good | 95.1 ft | 0 | 1995 |
| Kaiser Road over Quaker Run | Good | 44.0 ft | 0 | 1991 |