| Canyon RD over Smith River 002 | Poor | 46.9 ft | 100 | 1957 |
| 1st AVE over Sixteenmile Creek 029 | Poor | 41.0 ft | 100 | 1976 |
| Ed Lavell LN over Sixteenmile Creek 039 | Poor | 31.2 ft | 100 | 1959 |
| County Road 128 over Musselshell River 022 | Poor | 50.9 ft | 100 | 1986 |
| Fdr 211 over Four Mile Creek | Poor | 24.6 ft | 50 | 1973 |
| Fdr 211 over Four Mile Creek | Poor | 24.6 ft | 50 | 1973 |
| Fdr 204 over Moose Creek | Poor | 28.5 ft | 50 | 1956 |
| US 12 over South Fork Smith River | Fair | 72.5 ft | 1,023 | 1997 |
| US 89 Fh 32 over North Fork Smith River | Fair | 38.1 ft | 607 | 1955 |
| Main ST over North Fork Smith River | Fair | 29.9 ft | 575 | 1962 |
| US 12 over N Fork Musselshell R | Fair | 128.9 ft | 508 | 2014 |
| US 12 over Four Mile Creek | Fair | 25.9 ft | 486 | 1937 |
| US 89 Fh 32 over Sheep Creek | Fair | 68.9 ft | 376 | 1939 |
| US 12 over Flagstaff Creek | Fair | 117.1 ft | 347 | 2012 |
| US 12 over Cooper Creek | Fair | 149.9 ft | 347 | 2012 |
| S 294 over Martinsdale Supply Canal | Fair | 62.3 ft | 307 | 2010 |
| S 294 over S Fork Musselshell River | Fair | 143.7 ft | 307 | 2010 |
| S 294 over Cottonwood Creek | Fair | 79.1 ft | 224 | 1948 |
| S 294 over Sawmill Creek | Fair | 50.9 ft | 199 | 1940 |
| Smith River Road over Sheep Creek 003 | Fair | 69.9 ft | 133 | 1979 |
| S 360 Fh 65 over Smith River | Fair | 153.9 ft | 130 | 1975 |
| Martinsdale Reserv over Martinsdale Reservoir Ca | Fair | 22.6 ft | 100 | 1995 |
| Sixteenmile RD over Sixteenmile Creek 044 | Fair | 88.9 ft | 100 | 2022 |
| Clear Range RD over Smith River 014 | Fair | 101.4 ft | 100 | 1976 |
| Cottonwood CR RD over Cottonwood Creek 025 | Fair | 39.0 ft | 100 | 1970 |
| Birch Creek RD over Smith River 001 | Fair | 61.0 ft | 100 | 1973 |
| Slaughter Hse LN over S Fork Smith River 021 | Fair | 27.9 ft | 100 | 1991 |
| Martinsdale RD over S Fk Mussleshell Ovf 040 | Fair | 21.0 ft | 100 | 2009 |
| Linshire RD over Rock Creek 005 | Fair | 30.8 ft | 81 | 1981 |
| Birky RD over S Fork Smith River 028 | Fair | 30.8 ft | 68 | 1980 |
| Shields River RD over Shields River | Fair | 33.1 ft | 50 | 2016 |
| Forest Lk. Rd. 66 over W Fk Cottonwood Creek | Fair | 28.5 ft | 50 | 1969 |
| Fdr 119 over Sheep Creek | Fair | 40.7 ft | 50 | 1956 |
| Nfsr 119 over Moose Creek | Fair | 32.8 ft | 50 | 1971 |
| Fdr #9202 over Moose Creek | Fair | 24.6 ft | 50 | 1959 |
| Fdr 1077 over Sheep Creek | Fair | 24.0 ft | 50 | 1958 |
| Fdr 6414 over Sheep Creek | Fair | 28.2 ft | 50 | 1958 |
| Fdr 836 over Sheep Creek | Fair | 36.7 ft | 50 | 1968 |
| Fdr 204 over Moose Creek | Fair | 24.9 ft | 50 | 1956 |
| Fdr #204 over Moose Creek | Fair | 24.9 ft | 50 | 1956 |
| Fdr 211 over Four Mile Creek | Fair | 24.6 ft | 50 | 1972 |
| Fdr #204 over Moose Creek | Fair | 33.5 ft | 50 | 1956 |
| Fdr 204 over Moose Creek | Fair | 33.5 ft | 50 | 1956 |
| Us-12 over Whetstone Creek | Good | 128.3 ft | 347 | 2012 |
| Findon Lane RD over N Fk Musselshell 019 | Good | 60.7 ft | 100 | 2010 |
| Nf-581 over S Fork Musselshell 026 | Good | 62.0 ft | 100 | 1987 |
| Shields River Road over Shields River | Good | 32.2 ft | 50 | 2016 |
| Nfsr 274 over Spring Creek | Good | 35.4 ft | 50 | 1996 |
| Stud Horse Creek R over Lower Holstrom Ditch | Good | 28.9 ft | 50 | 2017 |
| Nfsr 274 over Musselshell River | Good | 85.6 ft | 40 | 1996 |
| Nfsr 6438 over Spring Creek | Good | 41.0 ft | 40 | 2010 |
| No Data Entered over Sheep Creek | Good | 40.0 ft | 40 | 1993 |
| Nfsr 575 over Camas Creek | Good | 24.0 ft | 10 | 1986 |