| US 12 over Drainage | Poor | 58.1 ft | 222 | 1947 |
| US 12 over Drainage | Poor | 57.1 ft | 222 | 1941 |
| US 12 over Drainage | Poor | 39.0 ft | 214 | 1938 |
| Old HWY 10 over Sweeney Creek 064 | Poor | 113.8 ft | 128 | 1930 |
| Frontage Road 303 over Graveyard Creek 055 | Poor | 41.0 ft | 128 | 1928 |
| County Road 105 over W Blacktail Creek 007 | Poor | 32.5 ft | 100 | 1940 |
| Wendel Kincheloe R over Rattlesnake Creek 002 | Poor | 133.5 ft | 100 | 1950 |
| I 94 over Int East Forsyth | Fair | 200.1 ft | 2,749 | 1977 |
| I 94 over Int East Forsyth | Fair | 191.9 ft | 2,749 | 1977 |
| I 94 over Int W Rosebud 446-447 | Fair | 124.0 ft | 2,636 | 1970 |
| I 94 over Int W Rosebud 446-447 | Fair | 124.0 ft | 2,636 | 1970 |
| I 94 over Rosebud Creek | Fair | 172.9 ft | 2,636 | 1970 |
| I 94 over Rosebud Creek | Fair | 172.9 ft | 2,636 | 1970 |
| I 94 over Sep Wright LN | Fair | 78.1 ft | 2,636 | 1970 |
| I 94 over Sweeney Creek-co RD | Fair | 216.5 ft | 2,636 | 1970 |
| I 94 over Sweeney Creek-co RD | Fair | 221.5 ft | 2,636 | 1970 |
| I 94 over Sep Frontage-old HWY 10 | Fair | 124.0 ft | 2,636 | 1970 |
| I 94 over Sep Frontage-old HWY 10 | Fair | 124.0 ft | 2,636 | 1970 |
| I 94 over Graveyard Creek | Fair | 82.7 ft | 2,636 | 1962 |
| I 94 over Graveyard Creek | Fair | 76.4 ft | 2,636 | 1977 |
| US 212 over Otter Creek | Fair | 99.1 ft | 2,593 | 2013 |
| I 94 over Armells Cr-rr | Fair | 414.0 ft | 2,166 | 1972 |
| I 94 WB over Smith Creek-sep Co RD | Fair | 220.5 ft | 2,166 | 1972 |
| IRR - US 212 over Tongue River | Fair | 203.7 ft | 2,126 | 1949 |
| I 94 EB over Int Reservation Cr-rd | Fair | 181.8 ft | 2,094 | 1967 |
| I 94 WB over Int Reservation Cr-rd | Fair | 182.1 ft | 2,094 | 1973 |
| I 94 over Sep Wright LN | Fair | 78.1 ft | 2,094 | 1970 |
| S 59 over Dry House Creek | Fair | 135.5 ft | 1,258 | 2007 |
| IRR - S 39 over Rr-power Plant Road | Fair | 260.8 ft | 1,250 | 1981 |
| US 12 over Rr | Fair | 234.6 ft | 1,249 | 1977 |
| US 12 over Int West Forsyth I 94 | Fair | 255.2 ft | 1,249 | 1977 |
| Power RD over Rr 076 | Fair | 269.0 ft | 948 | 1982 |
| IRR over Tongue River | Fair | 201.8 ft | 877 | 1970 |
| IRR - S 39 over Rr | Fair | 215.2 ft | 833 | 1983 |
| IRR - S 39 over Armells Creek | Fair | 214.6 ft | 833 | 1983 |
| IRR - S 39 over Int Colstrip I 94 | Fair | 248.4 ft | 833 | 1967 |
| IRR BIA RTE 4 over Tongue River | Fair | 200.5 ft | 800 | 1970 |
| IRR - S 39 over East Fork Armells Creek | Fair | 110.2 ft | 787 | 1983 |
| IRR - S 39 over Sheep Creek | Fair | 46.3 ft | 787 | 1982 |
| IRR - S 39 over Rr | Fair | 393.0 ft | 787 | 1983 |
| US 12 over Yellowstone River | Fair | 829.7 ft | 722 | 1958 |
| Old HWY 10 E over Smith Creek 053 | Fair | 88.9 ft | 638 | 1928 |
| Pine Butte Drive over Armells Creek 077 | Fair | 72.5 ft | 508 | 1981 |
| Old HWY 10 over Rosebud Creek | Fair | 112.5 ft | 376 | 2005 |
| Old HWY 10 E over Drainage 052 | Fair | 57.1 ft | 352 | 1941 |
| Old HWY 10 E over Armells Creek 045 | Fair | 128.9 ft | 352 | 1932 |
| Old HWY 10 over Wyant Coulee 044 | Fair | 65.6 ft | 273 | 1932 |
| Old HWY 10 over Reservation Creek 043 | Fair | 100.1 ft | 273 | 1936 |
| S 446 over Rr | Fair | 205.1 ft | 257 | 1970 |
| S 446 over Yellowstone River | Fair | 683.1 ft | 257 | 1970 |
| US 12 over Muggins Creek | Fair | 58.7 ft | 241 | 1947 |
| US 12 over Drainage | Fair | 39.0 ft | 222 | 1947 |
| US 12 over Dry Wash | Fair | 58.1 ft | 222 | 1947 |
| US 12 over Drainage | Fair | 25.9 ft | 222 | 1947 |
| US 12 over Drainage | Fair | 57.1 ft | 222 | 1941 |
| US 12 over Drainage | Fair | 39.0 ft | 222 | 1941 |
| US 12 over Drainage | Fair | 58.1 ft | 222 | 1941 |
| US 12 over Drainage | Fair | 58.1 ft | 222 | 1940 |
| US 12 over Horse Creek | Fair | 101.0 ft | 222 | 1940 |
| US 12 over Anderson Creek | Fair | 58.1 ft | 222 | 1940 |
| US 12 over Big Porcupine Overflow | Fair | 79.1 ft | 214 | 1988 |
| Lil Porcupine CR R over Little Porcupine CR 014 | Fair | 91.9 ft | 190 | 1978 |
| Hammond Valley RD over Greasewood Creek 033 | Fair | 51.5 ft | 142 | 1979 |
| Hammond Valley RD over Big Porcupine CR 034 | Fair | 86.9 ft | 142 | 1977 |
| Cartersville RD over Sand Creek 042 | Fair | 77.8 ft | 139 | 2012 |
| Old US 10 over Butte Creek 041 | Fair | 91.2 ft | 128 | 2015 |
| Old US 10 over Int E Rosebud I 94 003 | Fair | 331.0 ft | 128 | 1970 |
| Hirsch RD - RD 210 over Dirty Woman Creek | Fair | 24.0 ft | 100 | 1970 |
| Ingomar RD over W Fk Froze To Death 006 | Fair | 63.3 ft | 100 | 1979 |
| Nnn RD over Mcginnis Creek 004 | Fair | 38.1 ft | 100 | 1986 |
| Bridge RD over Musselshell River 001 | Fair | 140.4 ft | 100 | 1930 |
| Big Porcupine RD over Big Porcupine CR 010 | Fair | 87.9 ft | 100 | 1992 |
| Schiffer RD over Sep I 94 Schiffer RD 013 | Fair | 304.8 ft | 100 | 1977 |
| Frontage Road 148 over Sep I 94 009 | Fair | 304.5 ft | 100 | 1970 |
| Graveyard CR RD over Int Hathway I 94 012 | Fair | 245.7 ft | 100 | 1977 |
| Cartersville RD over Little Porcupine CR 027 | Fair | 74.1 ft | 100 | 1970 |
| Sand Creek RD over Cartersville Canal 030 | Fair | 33.1 ft | 100 | 1935 |
| Sand Creek RD over Sand Creek 031 | Fair | 41.0 ft | 100 | 1925 |
| Sand Creek RD W over Sand Creek 029 | Fair | 39.0 ft | 100 | 1987 |
| W Fk Amells CR RD over Armells Creek 038 | Fair | 51.8 ft | 100 | 1981 |
| Lee Creek RD over Hanging Woman Creek 075 | Fair | 42.7 ft | 100 | 1981 |
| IRR - L44235 over Armells Creek | Fair | 92.5 ft | 100 | 1967 |
| S 332 over Tongue River | Fair | 215.6 ft | 64 | 1963 |
| S 447 over Rosebud Creek | Fair | 128.0 ft | 61 | 1971 |
| S 447 over Rosebud Creek Overflow | Fair | 138.5 ft | 61 | 1971 |
| S 566-tongue R RD over Hanging Woman Creek | Fair | 65.9 ft | 53 | 1975 |
| S 566-tongue R RD over Tongue River | Fair | 179.1 ft | 53 | 1980 |
| S 566-tongue R RD over Canyon Creek | Fair | 38.1 ft | 53 | 1990 |
| Rosebud Creek RD over Rosebud Creek 047 | Fair | 41.3 ft | 37 | 1983 |
| Rosebud Creek RD over Rosebud CR Ovrflow 046 | Fair | 40.0 ft | 37 | 1980 |
| Rosebud Creek RD over Rosebud Creek 048 | Fair | 62.0 ft | 37 | 1982 |
| S 332 over Drainage | Fair | 24.0 ft | 29 | 1986 |
| Frontage Road 020 over Reservation Creek 036 | Fair | 66.9 ft | 25 | 1928 |
| Big Porcupine RD over Big Porcupine Creek 011 | Fair | 64.6 ft | 17 | 2006 |
| IRR BIA RTE 6 over Lame Deer Creek | Good | 67.9 ft | 3,000 | 1976 |
| I 94 over Armells Cr-rr | Good | 395.3 ft | 2,166 | 1967 |
| I 94 EB over Smith Creek-sep Co RD | Good | 220.5 ft | 2,166 | 1967 |
| IRR - S 39 over Rosebud Creek | Good | 146.0 ft | 671 | 2004 |
| IRR BIA RTE 4 over Birney Creek | Good | 21.7 ft | 250 | 2007 |
| US HWY 12 over Musselshell River | Good | 213.3 ft | 241 | 2019 |
| US 12 over Home Creek | Good | 122.4 ft | 241 | 2019 |
| US 12 over Horse Creek | Good | 90.2 ft | 222 | 2012 |
| US 12 over Big Porcupine Creek | Good | 143.0 ft | 214 | 2004 |
| US 12 over East Spring Coulee | Good | 24.6 ft | 214 | 2012 |
| US 12 over Drainage | Good | 25.9 ft | 214 | 2012 |
| US 12 over Drainage | Good | 29.9 ft | 214 | 2012 |
| US 12 over Drainage | Good | 20.7 ft | 214 | 2012 |
| US 12 over Greasewood Creek | Good | 28.5 ft | 214 | 2012 |
| US 12 over Mcgraws Coulee | Good | 35.4 ft | 214 | 2012 |
| Petroleum RD over Big Porcupine CR | Good | 53.5 ft | 100 | 2022 |
| Acorn Flats RD over Big Porcupine CR 005 | Good | 48.9 ft | 100 | 2007 |
| S 566-tongue R RD over Bridge Creek | Good | 31.2 ft | 47 | 2004 |