| Carries | Crosses | Location | Design | Status | Year Built | Year Recon. | Span Len. | Total Len. | Condition | Suff. Rating | ID | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NBI report | OLD HWY 85 | BOXELDER CK | 3.0E & 4.3N BUFFALO | Steel Stringer/Multi-beam or girder | NR eligible | 1936 | -- | 2.3 | 24.0 | Poor | 64.6 | 000000032280212 |
| NBI report | OLD HWY 85 | CK | 3.0E & 3.2N BUFFALO | Steel Stringer/Multi-beam or girder (3 spans) | -- | 1936 | -- | 25.9 | 78.1 | Poor | 49.8 | 000000032280223 |
| NBI report | REDIG RD | CK | 14.7 E REDIG | Concrete Culvert (3 spans) | -- | 1947 | -- | 1.0 | 32.2 | Poor | 62.1 | 000000032397470 |
| NBI report | SD020 | VALLEY CK | 5.0 E MONTANA STATE LINE | Steel Stringer/Multi-beam or girder (4 spans) | -- | 1950 | -- | 39.0 | 162.4 | Fair | 79.2 | 000000032051277 |
| NBI report | SD020 | LITTLE MISSOURI RV | 4.2 E MONTANA STATE LINE | Steel Stringer/Multi-beam or girder (4 spans) | -- | 1951 | -- | 129.9 | 330.1 | Fair | 66.4 | 000000032043278 |
| NBI report | SD079 | SOUTH FORK GRAND RV | 6.5 N JCT SD 20 | Steel Stringer/Multi-beam or girder (7 spans) | -- | 1957 | -- | 89.2 | 459.7 | Fair | 85.9 | 000000032517215 |
| NBI report | SD020 | SIOUX CK | 14.8 E JCT US 85 | Concrete Slab (4 spans) | -- | 1959 | -- | 33.1 | 12.8 | Poor | 61.9 | 000000032395284 |
| NBI report | SD020 | GAP CK | 2.1 W JCT SD 79 S | Steel Stringer/Multi-beam or girder (3 spans) | -- | 1959 | -- | 64.0 | 167.0 | Fair | 68.4 | 000000032451284 |
| NBI report | CAMP CROOK RD | CK | 2.2N & 21.0W BUFFALO | Wood Stringer/Multi-beam or girder (2 spans) | -- | 1960 | -- | 15.1 | 30.8 | Fair | 83.9 | 000000032040232 |
| NBI report | US085 | JONES CK | 8.9 NE OF BUFFALO | Concrete Slab (5 spans) | -- | 1960 | -- | 23.3 | 117.1 | Fair | 72.2 | 000000032280182 |
| NBI report | US085 | BULL CK | 13.6 NE OF BUFFALO | Concrete Slab (5 spans) | -- | 1960 | -- | 23.3 | 117.1 | Fair | 71.0 | 000000032305144 |
| NBI report | US085 | BIG NASTY CK | 9.7 S NORTH DAKOTA LINE | Concrete Slab (5 spans) | -- | 1960 | -- | 23.3 | 117.1 | Poor | 56.9 | 000000032327097 |
| NBI report | CAMP CROOK RD | SHAW CK | 11 W 1.6 S LADNER | Concrete Culvert (2 spans) | -- | 1961 | -- | 1.0 | 22.0 | Good | 88.9 | 000000032050101 |
| NBI report | COUNTY RD | KATY CK | 12.9 W 0.3 N REDIG | Concrete Culvert (2 spans) | -- | 1961 | -- | 1.0 | 44.9 | Good | 89.4 | 000000032122467 |
| NBI report | COUNTY RD | SOUTH FORK MOREAU RV | 11.5 W 2.5 S REDIG | Concrete Slab (3 spans) | -- | 1961 | -- | 44.9 | 119.1 | Fair | 88.5 | 000000032135495 |
| NBI report | SD079 | BIG NASTY CK | 13.7 N JCT SD 20 | Steel Stringer/Multi-beam or girder (3 spans) | -- | 1962 | -- | 89.2 | 233.9 | Fair | 87.1 | 000000032518145 |
| NBI report | SD079 | CK | 14.2 S NORTH DAKOTA LINE | Concrete Slab (4 spans) | -- | 1962 | -- | 22.6 | 83.3 | Good | 99.5 | 000000032520136 |
| NBI report | SD079 | CK | 11.6 N JCT SD 20 | Concrete Slab (4 spans) | -- | 1962 | -- | 20.7 | 83.0 | Good | 98.8 | 000000032520166 |
| NBI report | US085 | SOUTH FORK GRAND RV | 0.2 S JCT SD 20 W | Steel Stringer/Multi-beam or girder (4 spans) | -- | 1963 | -- | 69.9 | 254.9 | Fair | 70.4 | 000000032250257 |
| NBI report | US085 | SHEEP CK | 3.6 N OF BUFFALO | Concrete Slab (5 spans) | -- | 1963 | -- | 20.7 | 105.6 | Good | 72.2 | 000000032257223 |
| NBI report | SD079 | MOREAU RV | 21.4 S JCT SD 20 | Steel Stringer/Multi-beam or girder (3 spans) | -- | 1964 | -- | 52.2 | 138.5 | Fair | 99.1 | 000000032423471 |
| NBI report | US085 | BUFFALO CK | 2.9 S JCT SD 20 E | Concrete Slab (5 spans) | -- | 1964 | -- | 20.7 | 105.6 | Fair | 73.0 | 000000032250300 |
| NBI report | SD079 | NORTH FORK GRAND RV | 0.1 S NORTH DAKOTA LINE | Steel Stringer/Multi-beam or girder (3 spans) | -- | 1966 | -- | 8.2 | 213.9 | Fair | 91.2 | 000000032531001 |
| NBI report | COX RD | CROOKED CK | 5.2 N 2.5 W LUDLOW | Wood Stringer/Multi-beam or girder (3 spans) | -- | 1967 | -- | 20.0 | 61.0 | Fair | 65.1 | 000000032305028 |
| NBI report | FAS 6420 | CROOKED CK | 5 N 6.2 W LUDLOW | Wood Stringer/Multi-beam or girder (2 spans) | -- | 1967 | -- | 20.0 | 41.0 | Fair | 56.8 | 000000032268030 |
| NBI report | US085 | CROOKED CK | 2.9 S NORTH DAKOTA LINE | Concrete Slab (3 spans) | -- | 1973 | -- | 47.6 | 131.9 | Good | 79.5 | 000000032330029 |
| NBI report | US085 | NORTH BR MOREAU RV | 10 N BUTTE CO LINE | Prestressed Stringer/Multi-beam or girder (3 spans) | -- | 1974 | -- | 63.7 | 166.7 | Fair | 93.9 | 000000032250411 |
| NBI report | US085 | SAND CK | 17 S JCT SD 20 E | Concrete Slab (5 spans) | -- | 1974 | -- | 35.4 | 174.5 | Fair | 95.0 | 000000032250478 |
| NBI report | SD020 | BRUSH CK | 3.5 W OF BUFFALO | Concrete Slab (3 spans) | -- | 1975 | -- | 52.8 | 145.0 | Fair | 92.9 | 000000032215255 |
| NBI report | SD020 | RUSH CK | 0.9 W OF BUFFALO | Concrete Slab (3 spans) | -- | 1975 | -- | 37.7 | 106.0 | Fair | 93.2 | 000000032242255 |
| NBI report | CAVE HILL RD | BULL CK | 6 E 2 S LADNER | Prestressed Tee beam (3 spans) | -- | 1977 | -- | 40.0 | 100.1 | Fair | 77.4 | 000000032220105 |
| NBI report | CAMP CROOK ROAD | CK | 12.5 SOUTH CAMP CROOK | Prestressed Tee beam | -- | 1985 | -- | 39.0 | 40.0 | Fair | 72.1 | 000000032040405 |
| NBI report | MARTY RD | NORTH FORK MOREAU RV | 19.6E 1.0S OF REDIG | Steel Stringer/Multi-beam or girder | -- | 1986 | -- | 79.1 | 79.1 | Fair | 56.8 | 000000032446480 |
| NBI report | COUNTY RD | COAL BANK CK | 6.5 E LUDLOW | Prestressed Tee beam (2 spans) | -- | 1987 | -- | 28.9 | 29.9 | Good | 92.6 | 000000032395080 |
| NBI report | LUDLOW RD | LEMS CK | 8.2 E LUDLOW | Prestressed Tee beam (2 spans) | -- | 1987 | -- | 48.9 | 49.9 | Good | 92.7 | 000000032412080 |
| NBI report | SD020 | SQUAW CK | 12.0 E JCT US 85 | Concrete Culvert (3 spans) | -- | 1994 | -- | 1.0 | 31.2 | Good | 97.6 | 000000032369280 |
| NBI report | SD020 | CLARKS FORK CK | 8.8 E JCT US 85 | Concrete Slab (5 spans) | -- | 1995 | -- | 43.3 | 214.9 | Good | 97.6 | 000000032339272 |
| NBI report | CAMP CROOK RD | SOUTH FORK MOREAU RV | 20.3 S & 2.6 E CAMP CROOK | Concrete Culvert (2 spans) | -- | 1999 | -- | 12.1 | 24.6 | Good | 92.7 | 000000032067483 |
| NBI report | COUNTY RD | NORTH FORK STICK CK | 8.4 N CAMP CROOK | Concrete Culvert (2 spans) | -- | 2001 | -- | 12.1 | 24.6 | Good | 92.4 | 000000032040192 |
| NBI report | COUNTY RD | DRY HOUSE CK | 3.5 S 6.9 W LADNER | Concrete Culvert (2 spans) | -- | 2003 | -- | 12.1 | 24.6 | Good | 92.7 | 000000032091120 |
| NBI report | HARDING RD | VALLEY CK | 6.9E & 3.0S CAMP CROOK | Concrete Culvert (2 spans) | -- | 2004 | -- | 14.1 | 28.5 | Good | 92.3 | 000000032110308 |
| NBI report | CO RD 988 - 112 ST | LITTLE MISSOURI RV | 3.7S 7.8W LADNER | Concrete Culvert (2 spans) | -- | 2006 | -- | 1.0 | 20.7 | Good | 82.3 | 000000032082122 |
| NBI report | SORUM RD | POINT CK | 6.0S 0.7E REVA | Concrete Culvert (2 spans) | -- | 2006 | -- | 14.1 | 28.5 | Good | 100.0 | 000000032482340 |
| NBI report | COUNTY RD | CK | 7.1W & 5.5S BUFFALO | Concrete Culvert (2 spans) | -- | 2008 | -- | 14.1 | 28.5 | Good | 99.8 | 000000032178310 |
| NBI report | PARK RD | WEST SQUAW CK | 2.5S & 11.5W OF REVA | Concrete Culvert (2 spans) | -- | 2008 | -- | 14.1 | 28.5 | Good | 92.5 | 000000032360305 |
| NBI report | LEWTON RD | SLICK CK | 3.0W & 7.7N C.CROOK | Concrete Culvert (2 spans) | -- | 2012 | -- | 12.1 | 25.3 | Good | 87.2 | 000000032010197 |
| NBI report Bridgehunter | FAS 6313 | BOXELDER CK | 11 W 7.9 N LADNER | Prestressed Stringer/Multi-beam or girder (3 spans) | -- | 2013 | -- | 120.1 | 299.9 | Good | 92.4 | 000000032036001 |
| NBI report | COUNTY RD | STICK CK | 5.9N & 21.0W BUFFALO | Concrete Culvert (2 spans) | -- | 2015 | -- | 14.1 | 28.5 | Good | 99.5 | 000000032040196 |
| NBI report | WAGNER RD | BIG NASTY CK | 0.4 S OF RALPH | Prestressed Stringer/Multi-beam or girder (2 spans) | -- | 2017 | -- | 66.9 | 133.9 | Good | 100.0 | 000000032480124 |