| Sth 11 over Br Shullsburg Branch | Poor | 33.8 ft | 2,200 | 1947 |
| Cth F over Steiner Branch | Poor | 55.4 ft | 505 | 1936 |
| Cth F over Yellowstone River | Poor | 113.8 ft | 505 | 1936 |
| Cth M over Br E Br Pecatonica River | Poor | 24.3 ft | 380 | 1948 |
| Cth I over Ellis Branch | Poor | 24.3 ft | 293 | 1930 |
| Cth E over Ames Branch | Poor | 60.4 ft | 282 | 1966 |
| Cth E over Br Ames Branch | Poor | 42.7 ft | 282 | 1966 |
| Cth O over Mineral Point Branch | Poor | 104.0 ft | 199 | 1970 |
| Lrd Twin Bridge RD over Galena River | Poor | 52.5 ft | 176 | 1965 |
| Cth S over Canon Creek | Poor | 32.5 ft | 140 | 1961 |
| Lrd Cisserville RD over E Br Pecatonica River | Poor | 85.0 ft | 105 | 1961 |
| Cth Dd over Spafford Creek | Poor | 52.5 ft | 94 | 1959 |
| Lrd Kingsley RD over Wolf Creek | Poor | 27.6 ft | 88 | 1930 |
| Lrd Dunbarton RD over Trout Brook | Poor | 31.8 ft | 88 | 1929 |
| Lrd Carr Factory R over Br Galena River | Poor | 24.9 ft | 88 | 1950 |
| Lrd W Puddle Dock over Dougherty Creek | Poor | 37.7 ft | 88 | 1938 |
| Lrd Jericho RD over Jones Branch | Poor | 32.2 ft | 82 | 1930 |
| Lrd Oak Park RD over Pecatonica River | Poor | 58.4 ft | 58 | 1940 |
| Lrd Trotter RD over Trotter Branch | Poor | 35.1 ft | 47 | 1930 |
| Lrd Palfrey RD over Shullsburg Branch | Poor | 47.9 ft | 47 | 1929 |
| Lrd E Brennan Lane over Brennan Creek | Poor | 28.9 ft | 5 | 1930 |
| Sth 23-sth 81-main over Pecatonica River | Fair | 147.6 ft | 10,400 | 1968 |
| Ush 151 over Galena R Headwaters | Fair | 25.9 ft | 9,800 | 2004 |
| Ush 151 NB over Cottage Inn Branch | Fair | 131.2 ft | 5,250 | 2002 |
| Ush 151 NB over Lrd West Mound RD | Fair | 119.8 ft | 4,900 | 2004 |
| Ush 151 NB over Bonner Br | Fair | 142.7 ft | 4,900 | 2004 |
| Ush 151 SB over Bonner Br | Fair | 142.7 ft | 4,900 | 2004 |
| Sth 11 over Spafford Creek | Fair | 123.7 ft | 4,600 | 2006 |
| Sth 11-bridge ST over Br Wolf Creek | Fair | 52.5 ft | 3,500 | 2006 |
| Sth 11 over Wolf Creek | Fair | 52.5 ft | 3,500 | 2006 |
| Sth 81 over Br Madden Branch | Fair | 28.9 ft | 3,100 | 1977 |
| Sth 23 over Br Ames Branch | Fair | 60.7 ft | 3,000 | 1990 |
| Sth 78-sth 81 over Pecatonica River | Fair | 161.4 ft | 3,000 | 2001 |
| Sth 11 over Galena R | Fair | 234.3 ft | 2,900 | 2005 |
| Sth 11 over Shullsburg Branch | Fair | 144.0 ft | 2,900 | 2005 |
| Sth 11-sheridan ST over Shullsburg Branch | Fair | 39.7 ft | 2,900 | 1935 |
| Sth 78 over E Br Pecatonica River | Fair | 151.6 ft | 2,500 | 1988 |
| Sth 81 over Galena River | Fair | 78.7 ft | 2,200 | 1977 |
| Sth 81 over Madden Branch | Fair | 22.3 ft | 2,100 | 1966 |
| Sth 23 over Ames Branch | Fair | 131.9 ft | 2,000 | 2008 |
| Sth 81 over Pats Creek | Fair | 94.8 ft | 1,900 | 1977 |
| Cth F over Br Otter Creek | Fair | 46.9 ft | 940 | 1940 |
| Cth F over Otter Creek | Fair | 103.0 ft | 870 | 1963 |
| Cth W over Br Galena River | Fair | 44.6 ft | 599 | 1978 |
| Lrd Liberty ST over Br Bonner Branch | Fair | 30.5 ft | 540 | 1925 |
| Sth 78 over Whiteside Creek | Fair | 77.8 ft | 530 | 1989 |
| Lrd Market ST over Bonner Branch | Fair | 25.6 ft | 517 | 1985 |
| Cth G over Mud Branch | Fair | 30.2 ft | 490 | 1969 |
| Cth M over Br Pecatonica River | Fair | 49.9 ft | 434 | 1969 |
| Cth G over Pecatonica River | Fair | 165.0 ft | 387 | 1940 |
| Cth K over Copper Creek | Fair | 38.1 ft | 373 | 1985 |
| Sth 78 over Pecatonica River | Fair | 167.0 ft | 370 | 1970 |
| Cth H over Blue Mounds Branch | Fair | 43.0 ft | 352 | 1922 |
| Cth F over Mcclintock Creek | Fair | 23.0 ft | 352 | 1936 |
| Cth G over Bonner Branch | Fair | 65.9 ft | 345 | 1992 |
| Cth K over Ames Branch | Fair | 101.7 ft | 325 | 1998 |
| Cth G over Otter Creek | Fair | 110.9 ft | 317 | 1961 |
| Cth F over Vinegar Branch | Fair | 41.0 ft | 316 | 1985 |
| Cth W over Br Galena River | Fair | 27.6 ft | 305 | 1940 |
| Cth I over Br Madden Branch | Fair | 34.1 ft | 282 | 1976 |
| Cth M over Br Pecatonica River | Fair | 25.6 ft | 276 | 1966 |
| Cth N over Yellowstone River | Fair | 52.2 ft | 264 | 1968 |
| Cth O over Pecatonica River | Fair | 90.2 ft | 219 | 1985 |
| Lrd Bean ST RD over Galena River | Fair | 91.9 ft | 176 | 1970 |
| Cth O over Wood Branch | Fair | 42.7 ft | 176 | 1966 |
| Lrd Sales Barn RD over Pats Creek | Fair | 24.6 ft | 176 | 1966 |
| Lrd Bennett RD over Galena River | Fair | 120.1 ft | 176 | 1969 |
| Lrd Old HWY Q RD over Yellowstone River | Fair | 53.5 ft | 176 | 1971 |
| Lrd Furnace Hill R over Otter Creek | Fair | 86.0 ft | 168 | 1990 |
| Lrd Spring ST over Bonner Branch | Fair | 38.7 ft | 129 | 1981 |
| Lrd Riverside Lane over Pecatonica River | Fair | 125.7 ft | 99 | 1952 |
| Lrd Fort Defiance over Otter Creek | Fair | 33.1 ft | 94 | 1974 |
| Lrd Kings RD over Br Pecatonica River | Fair | 33.1 ft | 94 | 1940 |
| Lrd Woodberry RD over Br Otter Creek | Fair | 72.5 ft | 94 | 1950 |
| Lrd Wilkinson RD over Br Galena River | Fair | 24.6 ft | 94 | 1929 |
| Lrd Johnson RD over Shullsburg Branch | Fair | 48.2 ft | 88 | 1949 |
| Lrd Center DR RD over Br Galena River | Fair | 24.9 ft | 88 | 1950 |
| Lrd Center DR RD over Galena River | Fair | 24.0 ft | 88 | 1950 |
| Lrd Roller Coaster over Pecatonica River | Fair | 151.9 ft | 88 | 1980 |
| Lrd Mineral RD over Br Ames Branch | Fair | 24.0 ft | 88 | 1952 |
| Lrd Beebe RD over Coon Branch | Fair | 22.6 ft | 88 | 1930 |
| Lrd Ollie Bell RD over Galena River | Fair | 100.1 ft | 88 | 1969 |
| Lrd Silverthorn RD over Br Shullsburg Branch | Fair | 36.7 ft | 88 | 1951 |
| Lrd Dunbarton RD over Wolf Creek | Fair | 42.3 ft | 88 | 1953 |
| Lrd Wayne Center R over Spofford Creek | Fair | 65.9 ft | 88 | 1957 |
| Lrd Spore RD over Apple Branch | Fair | 33.1 ft | 88 | 1967 |
| Lrd E Sargent RD over Br Pecatonica River | Fair | 48.2 ft | 69 | 1983 |
| Lrd Stone RD over Otter Creek | Fair | 26.9 ft | 58 | 1974 |
| Lrd College Farm R over Galena River | Fair | 28.5 ft | 58 | 1949 |
| Lrd Cottage Inn RD over Cottage Inn Branch | Fair | 36.1 ft | 58 | 1940 |
| Lrd Landon RD over Bonner Branch | Fair | 47.9 ft | 58 | 1948 |
| Lrd Ferndale RD over Pecatonica River | Fair | 84.6 ft | 58 | 1958 |
| Lrd S Dublin RD over Copper Creek | Fair | 42.7 ft | 58 | 1959 |
| Lrd Larse RD over Pecatonica River | Fair | 72.5 ft | 58 | 1958 |
| Lrd Bethel Grove R over Br Cottage Inn Branch | Fair | 22.0 ft | 58 | 1940 |
| Lrd Cub Hollow RD over Br Wolf Creek | Fair | 29.9 ft | 58 | 1947 |
| Lrd Riverbend RD over Feather Brook | Fair | 23.6 ft | 58 | 1930 |
| Lrd State Line RD over Spafford Creek | Fair | 49.5 ft | 52 | 1950 |
| Lrd Gant RD over Yellowstone River | Fair | 59.4 ft | 47 | 1930 |
| Lrd Sunny Dale RD over Br Mounds Branch | Fair | 51.8 ft | 47 | 1955 |
| Lrd Pine Tree RD over Pats Creek | Fair | 27.6 ft | 47 | 1974 |
| Lrd ST Peters RD over Madden Branch | Fair | 61.0 ft | 47 | 1969 |
| Lrd Red School RD over Madden Branch | Fair | 65.6 ft | 47 | 1969 |
| Lrd Andrews RD over Spofford Creek | Fair | 52.5 ft | 47 | 1950 |
| Lrd Furnace Hill R over Br Otter Creek | Fair | 22.6 ft | 47 | 1968 |
| Lrd Madden RD over Madden Branch | Fair | 23.0 ft | 41 | 1966 |
| Lrd Apple Church G over Apple Branch | Fair | 31.8 ft | 41 | 1969 |
| Lrd Horseshoe Bend over Galena River | Fair | 100.1 ft | 38 | 1994 |
| Lrd Apple Branch R over Apple Branch | Fair | 27.6 ft | 23 | 1964 |
| Lrd Zimmerman RD over Br Otter Creek | Fair | 24.3 ft | 23 | 1936 |
| Lrd Country Club R over Br Ames Branch | Fair | 23.6 ft | 23 | 1950 |
| Lrd Round RD over Br Cherry Creek | Fair | 23.0 ft | 23 | 1934 |
| Lrd Back RD over Pats Creek | Fair | 27.6 ft | 17 | 1974 |
| Lrd Richardson Lan over Galena River | Fair | 99.1 ft | 10 | 1917 |
| Lrd Crist Lane (de over Br Pecatonica River | Fair | 24.6 ft | 10 | 1952 |
| Ush 151 SB over Cottage Inn Branch | Good | 131.2 ft | 5,250 | 2003 |
| Ush 151 NB over Lrd Private Drive/pecato | Good | 290.4 ft | 5,250 | 2002 |
| Ush 151 SB over Pecatonica River | Good | 290.4 ft | 5,250 | 2003 |
| Ush 151 SB over Lrd West Mound RD | Good | 119.8 ft | 4,900 | 2004 |
| Sth 81 over Dougherty Creek | Good | 89.2 ft | 3,700 | 1981 |
| Sth 126 NB over Ush 151 | Good | 230.0 ft | 2,700 | 2003 |
| Ush Sth 126 - N Mo over Bonner Branch | Good | 36.1 ft | 2,500 | 1986 |
| Sth 23 over Br Pecatonica River | Good | 34.4 ft | 2,100 | 1984 |
| Sth 78 over E Br Pecatonica River | Good | 158.8 ft | 1,500 | 2003 |
| Sth 78 over Brennan CR | Good | 47.6 ft | 1,500 | 2007 |
| Sth 81 over Otter Creek | Good | 61.7 ft | 1,200 | 2001 |
| Sth 81 over Apple Branch | Good | 56.4 ft | 1,000 | 2001 |
| Cth G Plattevill over Bonner Branch | Good | 42.7 ft | 994 | 1994 |
| Cth W over Galena River | Good | 133.9 ft | 920 | 1989 |
| Cth O Seymour RD over Shullsburg Branch | Good | 61.7 ft | 900 | 2017 |
| Cth D over Pecatonica River | Good | 146.7 ft | 890 | 2022 |
| Sth 78 over Sawmill Creek | Good | 71.9 ft | 873 | 2003 |
| Cth O over Ames Branch | Good | 30.5 ft | 870 | 2023 |
| Sth 78 over Br Trout Brook CR | Good | 62.7 ft | 790 | 2003 |
| Cth W over Coon Branch | Good | 44.3 ft | 446 | 1986 |
| Sth 78 over Cherry Creek | Good | 42.7 ft | 380 | 2017 |
| Cth K over Thunder Branch | Good | 34.1 ft | 360 | 1986 |
| Cth M over E Br Pecatonica River | Good | 93.8 ft | 345 | 1985 |
| Lrd Friendship ST over Shullsburg Branch | Good | 68.6 ft | 331 | 2011 |
| Cth U over Br Ames Branch | Good | 46.3 ft | 326 | 1990 |
| Cth I over Br Madden Branch | Good | 81.4 ft | 313 | 1999 |
| Cth H over Fever River | Good | 116.8 ft | 312 | 2009 |
| Cth Y over Trotter Branch | Good | 35.4 ft | 264 | 1977 |
| Cth U over South Fork Ames Branch | Good | 40.4 ft | 260 | 2018 |
| Lrd Maple Lane over Whiteside Br Pecatonicar | Good | 42.0 ft | 250 | 2002 |
| Cth Z over Wood Branch | Good | 48.6 ft | 239 | 2006 |
| Cth W over Apple River | Good | 33.5 ft | 238 | 1995 |
| Cth W over Br Apple River | Good | 27.2 ft | 238 | 1995 |
| Cth O over Furnace Creek | Good | 25.9 ft | 238 | 1998 |
| Cth N over Cherry Creek | Good | 42.7 ft | 210 | 2015 |
| Lrd Mine RD over Galena River | Good | 74.1 ft | 172 | 1992 |
| Lrd Holland RD over Br Wood Branch | Good | 36.7 ft | 170 | 2018 |
| Lrd State Line RD over Indian Creek | Good | 25.6 ft | 168 | 1990 |
| Lrd W Mound RD over Br Mounds Branch | Good | 43.0 ft | 165 | 1994 |
| Lrd Center DR RD over Pats Creek | Good | 49.9 ft | 165 | 1997 |
| Cth C over Bonner Branch | Good | 58.4 ft | 165 | 2023 |
| Cth O over Bonner Branch | Good | 45.3 ft | 160 | 1990 |
| Lrd Bethel Grove R over Cottage Inn Branch | Good | 42.7 ft | 160 | 2018 |
| Lrd Buncombe RD over Br Scrabble Creek | Good | 42.0 ft | 146 | 2006 |
| Lrd Fort Defiance over Br Otter Creek | Good | 33.5 ft | 133 | 1998 |
| Lrd Center DR over Madden Branch | Good | 24.6 ft | 127 | 1985 |
| Lrd Sunnydale RD over Mounds Br Platte River | Good | 24.0 ft | 127 | 1985 |
| Lrd S Galena RD over Galena River | Good | 71.9 ft | 127 | 1994 |
| Lrd S Galena RD NB over Br Galena River | Good | 52.8 ft | 127 | 2016 |
| Lrd Oak Park RD over Mineral Point Branch | Good | 82.0 ft | 123 | 1991 |
| Lrd Cottage Inn RD over Ush 151 | Good | 218.8 ft | 120 | 2003 |
| Cth I over Kelsey Branch | Good | 48.6 ft | 120 | 2018 |
| Lrd Hill Drive over Whiteside Creek | Good | 38.1 ft | 116 | 1984 |
| Lrd State Line RD over Br Spafford Creek | Good | 23.0 ft | 112 | 1986 |
| Lrd Miller Lane over Cherry Creek | Good | 26.9 ft | 112 | 1991 |
| Cth D over Canon CR | Good | 82.0 ft | 111 | 2013 |
| Lrd Kennedy RD over Bull Branch | Good | 61.4 ft | 107 | 2003 |
| Lrd Johnson RD over Trib Shullsburg Br | Good | 31.2 ft | 107 | 2003 |
| Lrd West Riverside over Br Of Pecaconica River | Good | 26.6 ft | 106 | 2003 |
| Lrd Walnut RD over Pecatonica River | Good | 124.0 ft | 104 | 2007 |
| Lrd Roller Coaster over Ames Branch | Good | 76.8 ft | 104 | 2008 |
| Lrd Wood RD over Ames Branch | Good | 48.6 ft | 102 | 2011 |
| Lrd State Line Roa over W. Fork Apple River | Good | 40.0 ft | 102 | 2011 |
| Lrd Gant RD over Yellowstone River | Good | 72.5 ft | 100 | 2016 |
| Lrd Mount Pleasant over Br Otter Creek | Good | 30.8 ft | 94 | 1950 |
| Lrd English Hollow over Canon Creek | Good | 27.6 ft | 94 | 1973 |
| Lrd Penny-benton R over Ellis Brook | Good | 24.9 ft | 94 | 1977 |
| Lrd Beebe RD over Galena River | Good | 87.9 ft | 93 | 1990 |
| Lrd Gravel Run RD over Br Otter Creek | Good | 42.3 ft | 92 | 1985 |
| Lrd Dump RD over Coon Branch | Good | 44.3 ft | 91 | 1988 |
| Lrd River RD over Pecatonica River | Good | 184.7 ft | 88 | 1981 |
| Lrd Cub Hollow RD over Copper Creek | Good | 42.0 ft | 88 | 1994 |
| Lrd Drybone RD over Spring Branch Creek | Good | 26.6 ft | 88 | 1994 |
| Lrd Ames Road over Ames Branch Of The Pecat | Good | 82.3 ft | 88 | 2022 |
| Lrd English Hollow over Canon Creek | Good | 33.1 ft | 88 | 1975 |
| Lrd Red Rock RD over Thunder Branch | Good | 24.0 ft | 88 | 1981 |
| Lrd Shawnee RD over Kelsey Branch | Good | 25.6 ft | 88 | 1976 |
| Lrd Ollie Bell RD over Ellis Branch | Good | 24.3 ft | 88 | 1970 |
| Lrd Mau Road over Turtle Creek | Good | 38.1 ft | 86 | 1985 |
| Lrd Fritzges Road over Turtle Creek | Good | 38.7 ft | 83 | 1998 |
| Lrd Sargent RD over Pecatonica River | Good | 113.8 ft | 81 | 1983 |
| Lrd Knee Deep RD over Madden Branch | Good | 46.9 ft | 80 | 1985 |
| Lrd S Lake RD over Yellowstone River | Good | 47.2 ft | 70 | 1990 |
| Lrd Rocky RD over Ames Branch | Good | 81.4 ft | 67 | 1998 |
| Lrd Aetna RD over Shullsburg Branch | Good | 77.8 ft | 61 | 1993 |
| Lrd Rowesville RD over Br Madden Branch | Good | 27.9 ft | 58 | 1994 |
| Lrd Mitchell Hollo over Bonner Branch | Good | 23.0 ft | 58 | 1994 |
| Lrd Russell RD over Br Cottage Inn Branch | Good | 24.3 ft | 58 | 2019 |
| Lrd Roper RD over Br Ames Branch | Good | 23.6 ft | 58 | 1976 |
| Lrd Fritzges RD over Brown Branch | Good | 24.9 ft | 58 | 1936 |
| Lrd Ames Road over Copper Creek | Good | 25.9 ft | 58 | 1981 |
| Lrd Wardsville RD over Br Ames Branch | Good | 45.9 ft | 55 | 1993 |
| Lrd Furnace Hill R over Br Otter Creek | Good | 21.7 ft | 47 | 1958 |
| Lrd Ames Branch RD over Br Ames Branch | Good | 31.8 ft | 46 | 1983 |
| Lrd St. Rose Road over Tr. Fever River | Good | 22.0 ft | 43 | 1998 |
| Lrd Ench RD over Scrabble Branch | Good | 39.0 ft | 42 | 1991 |
| Lrd Rowesville RD over Br Madden Branch | Good | 50.9 ft | 38 | 1997 |
| Lrd Gilbertson RD over Canon Creek | Good | 41.7 ft | 34 | 1983 |
| Lrd Wildcat Road over Otter Creek | Good | 67.9 ft | 28 | 1985 |
| Lrd Holland RD over Br Wood Branch | Good | 34.1 ft | 26 | 1990 |
| Lrd Gunderson RD over Yellowstone River | Good | 32.2 ft | 22 | 1992 |
| Lrd Brown RD over Brown Brook | Good | 25.9 ft | 1 | 1996 |