| US81 over Stream | 2003 | 8,565 | Good |
| US81 over Stream | 1938 | 8,565 | Fair |
| N13 over Pleasant Valley Drain | 1975 | 4,825 | Good |
| N13 over Stream | 1975 | 4,825 | Good |
| N13 over Willow Creek | 2004 | 4,825 | Good |
| US81 over N Fk Elkhorn River Trib | 1938 | 4,615 | Good |
| US81 over N Fk Elkhorn River Trib | 1938 | 4,615 | Fair |
| US81 over Stream | 1938 | 4,615 | Good |
| US81 over Yankton Slough | 2022 | 4,245 | Good |
| US81 over Yankton Slough Trib | 2022 | 4,245 | Good |
| US81 over Yankton Slough Trib | 2022 | 4,245 | Good |
| N13 over Elkhorn R Overflow | 1975 | 3,970 | Fair |
| N13 over N Fk Elkhorn River | 2020 | 3,970 | Good |
| US81 over Yankton Slough | 1990 | 3,740 | Fair |
| US20 over Dry Creek | 1967 | 3,600 | Good |
| US20 over Middle Logan Creek | 1955 | 2,635 | Fair |
| US20 over Yankton Slough | 1955 | 2,635 | Good |
| N13 over Stream | 1958 | 2,605 | Good |
| US20 over Breslau Creek | 1934 | 2,570 | Poor |
| US20 over N Fk Elkhorn River | 1992 | 2,570 | Fair |
| US20 over W Br N Fk Elkhorn River | 1992 | 2,570 | Fair |
| Farm Drive over E. Branch N. Fork Elkhor | 2013 | 2,345 | Good |
| US20/N121 over E Br N Fk Elkhorn River | 1957 | 2,345 | Fair |
| US20/N121 over N Fk Elkhorn River | 1992 | 2,345 | Fair |
| US20/N121 over N Fk Elkhorn River | 2004 | 2,345 | Good |
| US20 over E Br N Fk Elkhorn River | 2004 | 2,035 | Good |
| US20 over Stream | 1965 | 2,035 | Fair |
| N13 over Dry Creek | 1958 | 1,500 | Fair |
| N98 over N Fk Elkhorn River | 1960 | 1,480 | Fair |
| N13 over Dry Creek | 1939 | 1,395 | Fair |
| N13 over Dry Creek | 1939 | 1,395 | Fair |
| N13 over South Dry Creek | 1940 | 1,395 | Fair |
| N121 over Dry Creek | 1969 | 1,080 | Fair |
| N121 over N Fk Elkhorn River | 2014 | 1,080 | Good |
| N121 over Stream | 1947 | 1,080 | Fair |
| Fas 2945 over W Br N Fk Elkhorn River | 1975 | 785 | Fair |
| Fas 2945 over W Br N Fk Elkhorn River | 1975 | 785 | Good |
| N98 over N Fk Elkhorn River Trib | 2004 | 640 | Good |
| N98 over Stream | 1956 | 640 | Good |
| Fas 2850 over Stream | 1981 | 555 | Fair |
| 558TH Ave over Middle Logan Creek | 2023 | 470 | Good |
| Fas 2923 over N Fk Elkhorn River | 1986 | 470 | Good |
| Center St/fas 2950 over Hadar Creek | 1981 | 390 | Good |
| Fas 2600 over Stream | 1962 | 390 | Good |
| 536TH Ave over Dry Creek Trib | 2021 | 310 | Good |
| County Highway over Dry Creek | 1992 | 295 | Fair |
| Fas 2935 over Stream | 1969 | 210 | Fair |
| Fas 2935 over Stream | 1969 | 210 | Fair |
| Fas 2600 over Willow Creek | 1978 | 185 | Good |
| County Highway over Dry Creek | 2007 | 170 | Good |
| 854TH Rd over Elkhorn Riv N Fk Trib | 1934 | 165 | Poor |
| 854TH Rd over Elkhorn River N Fk Trib | 1935 | 165 | Fair |
| County Highway over Stream | 1934 | 165 | Poor |
| Fas 2935 over Willow Creek | 2016 | 160 | Good |
| 865 Road over W Br N Fk Elkhorn River | 1935 | 100 | Poor |
| County Highway 541 over Breslau Creek | 1935 | 100 | Fair |
| County Highway over N Fk Elkhorn River | 1935 | 100 | Fair |
| County Highway over Willow Creek | 1994 | 100 | Good |
| State Street over N Fk Elkhorn River | 1935 | 100 | Fair |
| State Street over Stream | 1935 | 100 | Fair |
| Fas 2860 over Stream | 1981 | 95 | Good |
| Fas 2860 over Yankton Slough | 2006 | 95 | Good |
| 547 Ave over N Fk Elkhorn River | 1935 | 80 | Fair |
| Coll 7716 over Stream | 1910 | 80 | Poor |
| Coll 7716 over Stream | 1935 | 80 | Fair |
| County Highway over N Fk Elkhorn River | 1935 | 80 | Fair |
| Fas 2895 over Willow Creek | 1998 | 80 | Good |
| Fas 2955 over Stream | 1960 | 80 | Good |
| Coll 7714 over Hadar Creek | 1935 | 75 | Poor |
| Coll 7714 over Hadar Creek | 1980 | 75 | Fair |
| Fas 2945 over Stream | 1959 | 70 | Fair |
| 543 Ave over Willow Creek | 2023 | 60 | Good |
| 553 Ave over Hadar Creek | 1935 | 60 | Fair |
| County Highway over Stream | 1935 | 60 | Fair |
| 859 Road over N Fk Elkhorn River | 2023 | 55 | Good |
| County Highway over N Fk Elkhorn River | 2013 | 55 | Good |
| 548 Ave over N Fk Elkhorn River | 1935 | 50 | Poor |
| 552 Ave over Elkhorn River N Fk Trib | 2021 | 50 | Good |
| 554 Ave over N Fk Elkhorn River | 1920 | 50 | Fair |
| 867TH Rd over Middle Logan Creek Trib | 1935 | 50 | Fair |
| Coll 7703 over Dry Creek | 1979 | 50 | Fair |
| Coll 7712 over W Br N Fk Elkhorn River | 1999 | 50 | Good |
| County Highway over Drainage | 1995 | 50 | Good |
| County Highway over Dry Creek | 1935 | 50 | Poor |
| County Highway over E Br N Fk Elkhorn River | 1935 | 50 | Fair |
| County Highway over N Fk Elkhorn River | 1990 | 50 | Fair |
| County Highway over N Fk Elkhorn River | 2004 | 50 | Good |
| County Highway over N Fk Elkhorn River | 1989 | 50 | Fair |
| County Highway over Stream | 2002 | 50 | Good |
| County Highway over Stream | 2002 | 50 | Fair |
| County Highway over Yankton Slough | 1973 | 50 | Good |
| 858 Road over Stream | 1913 | 45 | Poor |
| County Highway over Stream | 1981 | 45 | Fair |
| Fas 2945 over Breslau Creek | 1977 | 45 | Fair |
| Fas 2945 over Dry Creek | 1990 | 45 | Fair |
| 542ND Rd over Dry Creek | 2021 | 40 | Good |
| 548TH Ave over Dry Creek | 1935 | 40 | Poor |
| 549 Ave over E Br N Fk Elkhorn River | 1935 | 40 | Fair |
| 857 Road over N Fk Elkhorn River | 1935 | 40 | Fair |
| 863RD Road over Yankton Slough | 1935 | 40 | Good |
| County Highway over Dry Creek | 1935 | 40 | Fair |
| County Highway over N Fk Elkhorn River | 1979 | 40 | Fair |
| County Highway over N Fk Elkhorn River | 1935 | 40 | Poor |
| County Highway over N Fk Elkhorn River | 1994 | 40 | Good |
| County Highway over Stream | 1935 | 40 | Fair |
| County Highway over Stream | 1973 | 40 | Fair |
| County Highway over Stream | 1989 | 40 | Fair |
| County Highway over Stream | 1935 | 40 | Fair |
| County Highway over Stream | 1935 | 40 | Fair |
| County Highway over Stream | 1993 | 40 | Fair |
| County Highway over Stream | 1995 | 40 | Fair |
| County Highway over Yankton Slough | 1935 | 40 | Fair |
| County Highway over Breslau Creek | 1998 | 35 | Fair |
| County Highway over Dry Creek | 1935 | 35 | Good |
| County Highway over E Br N Fk Elkhorn River | 1935 | 35 | Poor |
| County Highway over E Br N Fk Elkhorn River | 2004 | 35 | Fair |
| County Highway over N Fk Elkhorn River | 1991 | 35 | Good |
| County Highway over Stream | 1935 | 35 | Fair |
| County Highway over Stream | 2000 | 35 | Good |
| County Highway over Stream | 1979 | 35 | Good |
| County Highway over Stream | 1935 | 35 | Fair |
| County Highway over W Br N Fk Elkhorn River | 1978 | 35 | Fair |
| County Highway over Yankton Slough | 1935 | 35 | Fair |
| Road 541 over Stream | 1935 | 35 | Good |
| 552 Ave over Yankton Slough | 1935 | 30 | Fair |
| 556 Ave over Stream | 1914 | 30 | Fair |
| 852 Road over N Fk Elkhorn River | 1910 | 30 | Fair |
| 853 Road over Willow Creek | 1915 | 30 | Poor |
| 870 Road over Stream | 2016 | 30 | Good |
| Coll 7647 over Stream | 1971 | 30 | Fair |
| Coll 7647 over Stream | 1971 | 30 | Fair |
| County Highway 538 over Stream | 1979 | 30 | Fair |
| County Highway over Dry Creek | 2015 | 30 | Good |
| County Highway over Stream | 1935 | 30 | Poor |
| County Highway over Yankton Slough | 2001 | 30 | Fair |
| 537TH Rd over Willow Creek | 2019 | 25 | Good |
| 543 Ave over Dry Creek | 1910 | 25 | Poor |
| 552 Ave over N Fk Elkhorn River | 1935 | 25 | Fair |
| 554TH Ave over Yankton Slough | 2021 | 25 | Good |
| 849 Road over N Fk Elkhorn River | 1910 | 25 | Poor |
| 857 Road over Stream | 1910 | 25 | Fair |
| 862ND Road over Yankton Slough | 2021 | 25 | Good |
| 869TH Rd over Elkhorn N Frk W Br Trib | 2018 | 25 | Good |
| County Highway over N Fk Elkhorn River | 1935 | 25 | Fair |
| County Highway over N Fk Elkhorn River | 1935 | 25 | Fair |
| County Highway over N Fk Elkhorn River | 2000 | 25 | Good |
| County Highway over N Fk Elkhorn River | 2004 | 25 | Fair |
| County Highway over Stream | 1935 | 25 | Fair |
| County Highway over Stream | 1999 | 25 | Good |
| County Highway over Stream | 1935 | 25 | Fair |
| County Highway over Stream | 1935 | 25 | Poor |
| County Highway over Stream | 2022 | 25 | Good |
| County Highway over Stream | 1986 | 25 | Fair |
| County Highway over W Br N Fk Elkhorn River | 1979 | 25 | Fair |
| County Highway over Willow Creek | 1994 | 25 | Good |
| County Highway over Yankton Slough | 1910 | 25 | Good |
| County Highway over Yankton Slough | 2024 | 25 | Good |
| County Highway over Yankton Slough | 1991 | 25 | Fair |
| 541 Ave over Willow Creek | 1935 | 20 | Poor |
| 542 Ave over Willow Creek | 2016 | 20 | Fair |
| County Highway over Dry Creek | 1991 | 20 | Good |
| County Highway over N Fk Elkhorn River | 1935 | 20 | Fair |
| 858 Road over N Fk Elkhorn River | 1935 | 15 | Fair |
| County Highway over Dry Creek | 2015 | 15 | Fair |
| County Highway over Stream | 1935 | 15 | Fair |
| County Highway over Stream | 2011 | 15 | Good |
| County Highway over Stream | 1935 | 15 | Poor |
| County Highway over Willow Creek | 1985 | 15 | Good |
| Private Drive over Dry Creek | 2024 | 15 | Good |
| 557TH Ave over Elkhorn River N Fk Trib | 2000 | 10 | Good |
| County Highway over Dry Creek | 2008 | 10 | Good |
| County Highway over N Fk Elkhorn River | 2011 | 10 | Good |
| County Highway over Stream | 1995 | 10 | Fair |
| County Highway over Stream | 1935 | 10 | Poor |
| County Highway over Willow Creek | 1987 | 10 | Fair |
| County Highway over Dry Creek | 1935 | 5 | Poor |
| County Highway over Stream | 1935 | 5 | Fair |