| IRR - US 89 over Blacktail Creek | Poor | 145.0 ft | 1,012 | 1965 |
| S 21 over Int Midway I 15 | Poor | 349.1 ft | 540 | 1972 |
| IRR - S 358 over Two Medicine River | Poor | 317.9 ft | 243 | 1968 |
| Sollid RD over Drainage | Poor | 24.0 ft | 16 | 1973 |
| I 15 over S Pondera Coulee | Fair | 46.9 ft | 3,248 | 1964 |
| I 15 over Pondera Canal | Fair | 73.2 ft | 1,510 | 1972 |
| S 44 over Int Valier I 15 | Fair | 285.8 ft | 1,118 | 1972 |
| IRR - US 89 over Birch Creek | Fair | 213.9 ft | 1,012 | 1965 |
| S 21 over Irrigation Canal | Fair | 27.2 ft | 706 | 1988 |
| IRR BIA RTE 1 over Birch Creek | Fair | 200.5 ft | 700 | 1966 |
| Sollid RD over Sep Sollid Road-i 15 | Fair | 337.3 ft | 572 | 1972 |
| US HWY 91 N over Dry Fork Marias 080 | Fair | 113.8 ft | 511 | 1931 |
| US HWY 91 N over Pondera Canal 081 | Fair | 65.9 ft | 511 | 1931 |
| Pendroy RD over Drainage | Fair | 30.8 ft | 483 | 1955 |
| IRR - S 358 over Birch Creek | Fair | 285.8 ft | 292 | 1965 |
| S 366-ledger RD over Int Ledger-i 15 | Fair | 292.0 ft | 187 | 1972 |
| S 366-ledger RD over Drainage | Fair | 25.9 ft | 187 | 1954 |
| S 366-ledger RD over Dry Fork Marias River | Fair | 107.0 ft | 169 | 1952 |
| Hillside RD over No Name Ditch 049 | Fair | 24.9 ft | 100 | 1960 |
| Messenger RD over No Name Coulee 072 | Fair | 24.9 ft | 100 | 1960 |
| Stoltz RD over Birch Creek 001 | Fair | 42.0 ft | 100 | 1976 |
| Trunk Butte RD over No Name Coulee 078 | Fair | 70.9 ft | 100 | 1960 |
| Kingston Mine RD over C Canal 025 | Fair | 24.9 ft | 100 | 1960 |
| Swanson RD over Drainage 062 | Fair | 23.0 ft | 100 | 1986 |
| Bullhead RD over Birch Creek 022 | Fair | 91.9 ft | 100 | 1950 |
| Price RD N over Pondera Coulee 007 | Fair | 91.9 ft | 100 | 1970 |
| Primrose RD N over Pondera Coulee 018 | Fair | 47.9 ft | 100 | 1979 |
| Westridge RD over Int Bullhead Rd-i 15 008 | Fair | 288.1 ft | 100 | 1976 |
| Overpass RD over S Pondera Coulee 014 | Fair | 24.9 ft | 100 | 1982 |
| Dupuyer Creek RD over Dupuyer Creek 067 | Fair | 30.8 ft | 100 | 1938 |
| Skyview RD S over No Name 070 | Fair | 24.9 ft | 100 | 1960 |
| Coalmine RD over Drainage 032 | Fair | 24.0 ft | 100 | 1986 |
| Hawkeye RD over Pondera Coulee 047 | Fair | 24.9 ft | 100 | 1950 |
| Blazen RD over Pondera Coulee 079 | Fair | 63.6 ft | 100 | 2004 |
| S 21 over Int Conrad I 15 | Fair | 371.1 ft | 100 | 1972 |
| Old Shelby RD over Pondera Canal 012 | Fair | 24.9 ft | 79 | 1960 |
| E Lake RD over Lake Francis Canal 075 | Fair | 46.9 ft | 77 | 1960 |
| E Lake RD over Lone Man Coulee | Fair | 49.9 ft | 77 | 1975 |
| E Lake RD over Dry Fk Marias River 030 | Fair | 61.0 ft | 77 | 1960 |
| E Lake RD over Pondera Coulee 029 | Fair | 24.9 ft | 77 | 1960 |
| Sollid RD over Pondera Coulee | Fair | 60.0 ft | 69 | 1964 |
| Midway RD E over Pondera Coulee 003 | Fair | 47.9 ft | 59 | 1960 |
| Conrad Dupuyer RD over Drainage | Fair | 24.0 ft | 59 | 1965 |
| Williams RD over No Name Ditch 053 | Fair | 40.7 ft | 53 | 1960 |
| Dry Fork RD over No Name Ditch 052 | Fair | 24.0 ft | 53 | 1950 |
| Conrad Dupuyer RD over Drainage | Fair | 24.0 ft | 53 | 1953 |
| Conrad Dupuyer RD over Dry Fork Marias River | Fair | 98.1 ft | 53 | 1966 |
| I 15 over Rr | Good | 165.0 ft | 1,727 | 1972 |
| I 15 over Rr | Good | 165.0 ft | 1,727 | 1972 |
| I 15 over Dry Fork Marias River | Good | 247.0 ft | 1,727 | 1972 |
| I 15 over Dry Fork Marias River | Good | 247.0 ft | 1,727 | 1972 |
| S 21 over Rr | Good | 222.8 ft | 1,725 | 1972 |
| I 15 over Pondera Canal | Good | 71.9 ft | 1,510 | 1972 |
| I 15 over Pondera Coulee | Good | 124.0 ft | 1,480 | 1972 |
| I 15 over Pondera Coulee | Good | 124.0 ft | 1,480 | 1972 |
| S 21-s Main ST over Pondera Coulee | Good | 37.7 ft | 1,245 | 1934 |
| S 44 over Irrigation Canal | Good | 29.9 ft | 1,097 | 2003 |
| S 44 over Dupuyer Creek | Good | 249.0 ft | 968 | 2003 |
| S 44 over Soberup Creek | Good | 114.2 ft | 836 | 2003 |
| IRR BIA RTE 1 over Whitetail Creek | Good | 42.3 ft | 700 | 1977 |
| BIA RTE 1 over Blacktail Creek | Good | 60.0 ft | 700 | 2021 |
| Pendroy RD over Drainage | Good | 76.4 ft | 652 | 2003 |
| Sollid RD over Pondera Coulee | Good | 100.1 ft | 572 | 1971 |
| US 89 over Dupuyer Creek | Good | 176.8 ft | 543 | 1980 |
| US 89 over Dupuyer Creek Overflow | Good | 122.0 ft | 543 | 1968 |
| US 89 over S Fk Dry Fk Marias River | Good | 38.7 ft | 518 | 2013 |
| US 89 over Jensen Coulee | Good | 91.9 ft | 518 | 2006 |
| US 89 over Dry Fork Marias River | Good | 97.4 ft | 518 | 2006 |
| US 89 over Matchett Coulee | Good | 29.9 ft | 518 | 2006 |
| US 89 over Valier Canal | Good | 83.0 ft | 470 | 1965 |
| S 365-brady RD over Int Brady-i 15 | Good | 302.8 ft | 260 | 1964 |
| Valier Dupuyer RD over Valier Canal 035 | Good | 46.9 ft | 120 | 1950 |
| Frances Heights RD over Canal 034 | Good | 29.9 ft | 100 | 2020 |
| Frances Heights RD over Canal 033 | Good | 78.7 ft | 100 | 2009 |
| Bullhead RD over Bullhead Creek 021 | Good | 94.2 ft | 100 | 1960 |
| Heights RD over Lake Francis Canal 071 | Good | 47.9 ft | 100 | 1960 |
| Kelly RD over Pondera Coulee 019 | Good | 46.9 ft | 100 | 1960 |
| Price RD S over S Pondera Coulee 006 | Good | 26.9 ft | 100 | 1973 |
| Preputin RD over Pondera Coulee 011 | Good | 79.1 ft | 100 | 1960 |
| Meridian RD over Pondera Coulee 015 | Good | 41.0 ft | 100 | 1960 |
| Church RD S over Pondera Coulee 005 | Good | 60.0 ft | 100 | 1986 |
| Skyview RD S over Dry Fk Marias River 069 | Good | 76.1 ft | 100 | 1987 |
| Derby DR over No Name Coulee 027 | Good | 25.6 ft | 100 | 2005 |
| Overpass RD over Sep I 15 009 | Good | 277.9 ft | 100 | 1964 |
| Midway RD W over No Name Coulee 028 | Good | 23.3 ft | 97 | 2012 |
| Old Shelby RD over Dry Fk Marias River 013 | Good | 133.9 ft | 79 | 1970 |
| Midway RD E over S Pondera Coulee 002 | Good | 24.9 ft | 59 | 1960 |
| Midway RD E over Pondera Coulee 004 | Good | 48.9 ft | 59 | 1987 |
| Dry Fork RD over Dry Fk Marias 051 | Good | 79.1 ft | 53 | 1985 |
| Dry Fork RD over Spring Creek 050 | Good | 26.9 ft | 53 | 1987 |
| Dry Fork RD over Irrigation Canal 085 | Good | 25.9 ft | 53 | 2013 |
| Swift Dam RD over Sheep Creek 082 | Good | 49.9 ft | 40 | 2014 |
| Messenger Road over No Name Ditch 074 | Good | 34.8 ft | 31 | 2023 |
| Messenger RD over Dry Fk Marias River 073 | Good | 99.1 ft | 31 | 1988 |
| IRR BIA RTE 110 over North Fork Whitetail Crk | Good | 46.9 ft | 30 | 1979 |
| Blue Sky RD over No Name Ditch 076 | Good | 29.9 ft | 5 | 2020 |