Beaverhead County, Montana bridges
Beaverhead County has 227 bridges and culverts in the National Bridge Inventory, the oldest built in 1908. 24 (11%) are rated poor. The most common type is stringer/multi-beam or girder (73%).
- Bridges
- 227
- Good
- 23%
- Fair
- 66%
- Poor
- 11%
- 24 bridges
- Average age
- 46.1 yrs
- Posted or closed
- 39
Map of bridges in Beaverhead County
Green good, amber fair, red poor. Click a marker for details.Search bridges in Beaverhead County
Type at least two characters, or pick a condition or type, to search every bridge in the county.
Condition
Good23%(53)
Fair66%(150)
Poor11%(24)
When they were built
Busiest
- S 89 over Local-Blacktail Cr-RrFair4,241 vehicles/day
- S 89 over Int North Dillon I 15Fair4,241 vehicles/day
- I 15 over Drainage IRR DitchFair3,915 vehicles/day
- I 15 over Birch CreekFair3,852 vehicles/day
- I 15 over Int Jackson-Hwy 278Fair2,863 vehicles/day
Longest
- I 15 over Sep RRFair560 ft
- I 15 over Sep RRFair481 ft
- Fair
- Fair
- I 15 over Sep RRFair393 ft
Oldest
- Ryan Canyon RD over Beaverhead River 023PoorBuilt 1908
- Ashbough Trail over Red Rock River 086FairBuilt 1909
- Roe LN over Red Rock River 121PoorBuilt 1913
- Browns Bridge RD over Big Hole River 123PoorBuilt 1915
- Fair
All bridges in Beaverhead County
Busiest first · showing 1–200 of 227| Bridge | Location | Built | Type | Length | Daily traffic | Condition |
|---|---|---|---|---|---|---|
| S 89 over Local-Blacktail Cr-Rr No. P00089002+06021 | Dillon | 1974 | Stringer/Multi-beam or Girder | 322 ft | 4,241 | Fair |
| S 89 over Int North Dillon I 15 No. P00089003+02321 | Dillon | 1973 | Stringer/Multi-beam or Girder | 295 ft | 4,241 | Fair |
| I 15 over Drainage IRR Ditch No. I00015064+04001 | Dillon | 1973 | Culvert | 23 ft | 3,915 | Fair |
| I 15 over Birch Creek No. I00015077+02001 | 13M N Dillon | 1973 | Culvert | 26 ft | 3,852 | Fair |
| I 15 over Int Jackson-Hwy 278 No. I00015059+07111 | 3.7M S Dillon | 1982 | Stringer/Multi-beam or Girder | 128 ft | 2,863 | Fair |
| I 15 over Int Jackson-Hwy 278 No. I00015059+07112 | 3.7M S Dillon | 1982 | Stringer/Multi-beam or Girder | 128 ft | 2,863 | Good |
| I 15 over Beaverhead River No. I00015060+01522 | 3.1M S Dillon | 1982 | Stringer/Multi-beam or Girder | 143 ft | 2,863 | Fair |
| I 15 over Beaverhead River No. I00015060+01771 | 3.1M S Dillon | 1982 | Stringer/Multi-beam or Girder | 142 ft | 2,863 | Fair |
| I 15 over Poindexter Slough No. I00015060+08831 | 2.5M S Dillon | 1983 | Stringer/Multi-beam or Girder | 73 ft | 2,863 | Fair |
| I 15 over Poindexter Slough No. I00015060+08832 | 2.5M S Dillon | 1983 | Stringer/Multi-beam or Girder | 73 ft | 2,863 | Fair |
| I 15 over Sep Local Road No. I00015060+09941 | 2.5M S Dillon | 1983 | Slab | 63 ft | 2,863 | Fair |
| I 15 over Sep Local Road No. I00015060+09942 | 2.5M S Dillon | 1983 | Slab | 63 ft | 2,863 | Fair |
| HWY 91 N over Beaverhead River 033 No. L01311000+06001 | 1M N Dillon | 1946 | Stringer/Multi-beam or Girder | 150 ft | 2,676 | Poor |
| I 15 over Sep Park Street No. I00015063+04941 | Dillon | 1983 | Stringer/Multi-beam or Girder | 184 ft | 2,636 | Fair |
| I 15 over Sep Park Street No. I00015063+04942 | Dillon | 1983 | Stringer/Multi-beam or Girder | 184 ft | 2,636 | Fair |
| S 41 over Stone Creek No. P00049009+00571 | 9M NE Dillon | 1949 | Stringer/Multi-beam or Girder | 38 ft | 2,403 | Fair |
| I 15 over Int Grasshopper Creek No. I00015052+06211 | 8M N Clark Canyon Dam | 1988 | Stringer/Multi-beam or Girder | 125 ft | 2,239 | Fair |
| I 15 over Int Grasshopper Creek No. I00015052+06212 | 8M N Clark Canyon Dam | 1988 | Stringer/Multi-beam or Girder | 125 ft | 2,239 | Fair |
| I 15 over Beaverhead River No. I00015052+07991 | 8M N Clark Canyon Dam | 1981 | Stringer/Multi-beam or Girder | 182 ft | 2,239 | Fair |
| I 15 over Beaverhead River No. I00015052+07992 | 8M N Clark Canyon Dam | 1965 | Stringer/Multi-beam or Girder | 189 ft | 2,239 | Fair |
| I 15 over Beaverhead River No. I00015053+00301 | 8M N Clark Canyon Dam | 1980 | Stringer/Multi-beam or Girder | 154 ft | 2,239 | Fair |
| I 15 over Beaverhead River No. I00015053+00302 | 8M N Clark Canyon Dam | 1965 | Stringer/Multi-beam or Girder | 165 ft | 2,239 | Fair |
| I 15 over Int Barretts-Rebich LN No. I00015056+00201 | 7.4M S Dillon | 1965 | Stringer/Multi-beam or Girder | 123 ft | 2,239 | Fair |
| I 15 over Int Barretts-Rebich LN No. I00015056+00202 | 7.4M S Dillon | 1980 | Stringer/Multi-beam or Girder | 123 ft | 2,239 | Fair |
| I 15 over Beaverhead River No. I00015044+09301 | Clark Canyon Dam | 1962 | Stringer/Multi-beam or Girder | 173 ft | 2,185 | Fair |
| I 15 over Beaverhead River No. I00015044+09302 | Clark Canyon Dam | 1981 | Stringer/Multi-beam or Girder | 173 ft | 2,185 | Fair |
| I 15 over Beaverhd R-High Brdg RD No. I00015045+09001 | 1.2M N Clark Canyon Dam | 1964 | Stringer/Multi-beam or Girder | 402 ft | 2,185 | Fair |
| I 15 over Beaverhd R-High Brdg RD No. I00015045+09002 | 1.2M N Clark Canyon Dam | 1981 | Stringer/Multi-beam or Girder | 448 ft | 2,185 | Fair |
| I 15 over Sep High Bridge RD No. I00015048+07471 | 3.7M N Clark Canyon Dam | 1986 | Slab | 80 ft | 2,185 | Fair |
| I 15 over Sep High Bridge RD No. I00015048+07472 | 3.7M N Clark Canyon Dam | 1986 | Slab | 80 ft | 2,185 | Fair |
| I 15 over Beaverhead River No. I00015049+07601 | 5M N Clark Canyon Dam | 1964 | Stringer/Multi-beam or Girder | 163 ft | 2,185 | Fair |
| I 15 over Beaverhead River No. I00015049+07602 | 5M N Clark Canyon Dam | 1980 | Stringer/Multi-beam or Girder | 154 ft | 2,185 | Good |
| I 15 over Sep High Bridge RD No. I00015051+00471 | 6.2M N Clark Canyon Dam | 1988 | Slab | 79 ft | 2,185 | Fair |
| I 15 over Sep High Brdge RD No. I00015051+00472 | 6.2M N Clark Canyon Dam | 1988 | Slab | 79 ft | 2,185 | Fair |
| I 15 over Int Kidd No. I00015029+06021 | 5.6M N Dell-Kidd LN | 1971 | Slab | 78 ft | 2,116 | Fair |
| I 15 over Int Kidd No. I00015029+06022 | 5.6M N Dell-Kidd LN | 1971 | Slab | 78 ft | 2,116 | Fair |
| I 15 over Int Red Rock-Red Rock RD No. I00015037+03521 | 7.4M S Clark Canyon Dam | 1971 | Stringer/Multi-beam or Girder | 123 ft | 2,116 | Fair |
| I 15 over Int Red Rock-Red Rock RD No. I00015037+03522 | 7.4M S Clark Canyon Dam | 1971 | Stringer/Multi-beam or Girder | 123 ft | 2,116 | Fair |
| I 15 over Red Rock River No. I00015038+04301 | 6.2M S Clark Canyon Dam | 1962 | Stringer/Multi-beam or Girder | 143 ft | 2,116 | Fair |
| I 15 over Red Rock River No. I00015038+04302 | 6.2M S Clark Canyon Dam | 1981 | Stringer/Multi-beam or Girder | 174 ft | 2,116 | Fair |
| I 15 over Sep Roe LN No. I00015038+07801 | 6.2M S Clark Canyon Dam | 1962 | Stringer/Multi-beam or Girder | 107 ft | 2,116 | Fair |
| I 15 over Sep Roe LN No. I00015038+07802 | 6.2M S Clark Canyon Dam | 1980 | Stringer/Multi-beam or Girder | 113 ft | 2,116 | Fair |
| I 15 over Beaverhead River No. I00015064+00881 | 0.6M N Dillon | 1973 | Stringer/Multi-beam or Girder | 143 ft | 1,958 | Good |
| I 15 over Beaverhead River No. I00015064+00882 | 0.6M N Dillon | 1973 | Stringer/Multi-beam or Girder | 143 ft | 1,958 | Good |
| E Reeder Street over Blacktail Deer Creek 131 No. M01033000+00201 | Dillon-E Reeder ST | 2010 | Tee Beam | 46 ft | 1,937 | Good |
| I 15 over Int Apex-Birch CR RD No. I00015074+09741 | 11.2M N Dillon | 1973 | Stringer/Multi-beam or Girder | 170 ft | 1,926 | Fair |
| I 15 over Int Apex-Birch CR RD No. I00015074+09742 | 11.2M N Dillon | 1973 | Stringer/Multi-beam or Girder | 170 ft | 1,926 | Fair |
| I 15 over Sep County RD 203 No. I00015079+00121 | 11.2M S Melrose | 1973 | Stringer/Multi-beam or Girder | 119 ft | 1,926 | Fair |
| I 15 over Sep County RD 203 No. I00015079+00122 | 11.2M S Melrose | 1973 | Stringer/Multi-beam or Girder | 119 ft | 1,926 | Good |
| I 15 over Int Rock Cr-Brownes Br R No. I00015085+02241 | 8M S Melrose | 1973 | Stringer/Multi-beam or Girder | 133 ft | 1,926 | Fair |
| I 15 over Int Rock Cr-Brownes Br R No. I00015085+02242 | 8M S Melrose | 1973 | Stringer/Multi-beam or Girder | 133 ft | 1,926 | Fair |
| I 15 over Int Lima-Bailey ST No. I00015015+01701 | Lima | 1959 | Stringer/Multi-beam or Girder | 119 ft | 1,863 | Poor |
| I 15 over Int Lima-Bailey ST No. I00015015+01702 | Lima | 1980 | Stringer/Multi-beam or Girder | 119 ft | 1,863 | Fair |
| I 15 over Sep Gosman Lane No. I00015019+08071 | 3.7M S Dell | 1967 | Stringer/Multi-beam or Girder | 108 ft | 1,863 | Fair |
| I 15 over Sep Gosman Lane No. I00015019+08072 | 3.7M S Dell | 1971 | Stringer/Multi-beam or Girder | 108 ft | 1,863 | Fair |
| I 15 over Big Sheep Creek No. I00015023+02101 | 0.6M S Dell | 1971 | Stringer/Multi-beam or Girder | 37 ft | 1,863 | Fair |
| I 15 over Big Sheep Creek No. I00015023+02102 | 0.6M S Dell | 1971 | Stringer/Multi-beam or Girder | 37 ft | 1,863 | Fair |
| I 15 over Int Dell No. I00015023+08291 | Dell-Main ST | 1971 | Stringer/Multi-beam or Girder | 138 ft | 1,863 | Fair |
| I 15 over Int Dell No. I00015023+08292 | Dell-Main ST | 1971 | Stringer/Multi-beam or Girder | 138 ft | 1,863 | Fair |
| Laknar LN over Beaverhead River 095 No. L01279000+04001 | 1M N Dillon | 2001 | Stringer/Multi-beam or Girder | 143 ft | 1,816 | Fair |
| S 89 over Int South Dillon I 15 No. P00089000+00001 | Dillon | 1983 | Stringer/Multi-beam or Girder | 285 ft | 1,804 | Fair |
| S 89 over RR No. P00089000+01261 | South Dillon | 1983 | Stringer/Multi-beam or Girder | 216 ft | 1,804 | Fair |
| S 89 over Blacktail Creek No. P00089000+03311 | South Dillon | 1983 | Stringer/Multi-beam or Girder | 98 ft | 1,804 | Fair |
| I 15 over Sep RR No. 000000000001010 | 1.9M S Lima | 2016 | Stringer/Multi-beam or Girder | 560 ft | 1,771 | Fair |
| I 15 over Int Monida S 509 No. I00015000+05201 | Monida | 1959 | Stringer/Multi-beam or Girder | 118 ft | 1,771 | Poor |
| I 15 over Int Monida S 509 No. I00015000+05202 | Monida | 1981 | Stringer/Multi-beam or Girder | 118 ft | 1,771 | Fair |
| I 15 over Sep RR No. I00015001+05691 | 1.2M N Monida | 2015 | Stringer/Multi-beam or Girder | 393 ft | 1,771 | Fair |
| I 15 over Sep RR No. I00015001+05692 | 1.2M N Monida | 1981 | Stringer/Multi-beam or Girder | 253 ft | 1,771 | Fair |
| I 15 over Sep Snowline Stock LN No. I00015003+02111 | 2.5M N Monida | 1981 | Slab | 60 ft | 1,771 | Fair |
| I 15 over Sep Snowline Stock LN No. I00015003+02112 | 2.5M N Monida | 1981 | Slab | 60 ft | 1,771 | Fair |
| I 15 over Int Snowline Stock LN No. I00015009+05281 | 5.6M S Lima | 1981 | Slab | 78 ft | 1,771 | Fair |
| I 15 over Int Snowline Stock LN No. I00015009+05282 | 5.6M S Lima | 1981 | Slab | 78 ft | 1,771 | Fair |
| I 15 over Sep RR No. I00015012+07671 | 1.9M S Lima | 1980 | Stringer/Multi-beam or Girder | 481 ft | 1,771 | Fair |
| S 278 over Grasshopper Creek No. S00278018+06001 | 21M W Dillon | 1957 | Stringer/Multi-beam or Girder | 50 ft | 668 | Fair |
| S 43 FH 20 over Big Hole River No. P00046025+08221 | Wisdom | 1962 | Stringer/Multi-beam or Girder | 215 ft | 631 | Fair |
| S 43 over Smart Creek No. P00046064+09971 | Wise River | 1970 | Stringer/Multi-beam or Girder | 33 ft | 616 | Fair |
| S 43 over Wise River No. P00046065+01201 | Wise River | 1970 | Stringer/Multi-beam or Girder | 77 ft | 616 | Fair |
| Mt HWY 91 over Poindexter Slough No. S00222002+07511 | 3M SW Dillon | 1936 | Tee Beam | 77 ft | 612 | Fair |
| Mt HWY 91 over RR No. S00222002+08611 | 3M SW Dillon | 1936 | Tee Beam | 143 ft | 612 | Poor |
| Mt HWY 91 over Beaverhead River No. S00222003+02951 | 3M SW Dillon | 1945 | Stringer/Multi-beam or Girder | 140 ft | 612 | Fair |
| MT-43 FH 20 over Trail Creek No. 000000202105862 | 17 M W Wisdom | 2021 | Slab | 73 ft | 461 | Good |
| MT-43 FH 20 over Trail Creek No. 000000202105863 | 16 M W Wisdom | 2021 | Slab | 73 ft | 461 | Good |
| S 43 FH 20 over Trail Creek No. P00046007+05221 | 19M W Wisdom | 1961 | Slab | 38 ft | 461 | Good |
| MT-43 FH 20 over Trail Creek No. P00046014+01231 | 12M W Wisdom | 1961 | Slab | 60 ft | 461 | Fair |
| S 43 FH 20 over Ruby Creek No. P00046015+07981 | 11M W Wisdom | 1961 | Slab | 60 ft | 461 | Fair |
| Lovers Leap RD over Sep I 15 12 No. L01315000+07001 | 1M N Dillon | 1973 | Stringer/Multi-beam or Girder | 298 ft | 448 | Fair |
| S 43 over Big Hole River No. P00046058+00321 | 7M NW Wise River | 1960 | Stringer/Multi-beam or Girder | 325 ft | 448 | Fair |
| S 278 over Warm Spring Creek No. S00278043+02001 | Jackson | 1970 | Slab | 32 ft | 396 | Fair |
| S 278 over Drainage No. S00278043+03001 | Jackson | 1970 | Slab | 32 ft | 396 | Fair |
| S 324 over Int Horse Prairie I 15 No. S00324000+00011 | 1M E Clark Canyon Dam | 1962 | Stringer/Multi-beam or Girder | 235 ft | 396 | Fair |
| S 324 over Clark Canyon Dam Splwy No. S00324001+00001 | Clark Canyon Dam | 1962 | Tee Beam | 73 ft | 396 | Fair |
| Frying Pan Road over West Side Canal 126 No. L01112000+02501 | 3M N Dillon | 2011 | Slab | 30 ft | 357 | Good |
| Frying Pan RD over Sep I 15 126 No. L01112000+05201 | 3M N Dillon | 1973 | Stringer/Multi-beam or Girder | 311 ft | 357 | Fair |
| S 43 over Steel Creek No. P00046027+06761 | 1M N Wisdom | 1956 | Stringer/Multi-beam or Girder | 38 ft | 353 | Fair |
| Old Stage RD over Beaverhead River 047 No. L01243000+02001 | E Barretts Int | 1995 | Stringer/Multi-beam or Girder | 101 ft | 298 | Fair |
| Old Stage RD over Local Drainage 048 No. L01243000+03001 | E Barretts Int | 1959 | Stringer/Multi-beam or Girder | 27 ft | 298 | Fair |
| Old Stage RD over Canyon Ditch No. L01243000+06001 | E Barretts Int | 1982 | Stringer/Multi-beam or Girder | 51 ft | 298 | Fair |
| CO RD 002 FH 73 over Grasshopper Creek 016 No. L01002043+03001 | 25M NW Dillon | 1998 | Slab | 69 ft | 292 | Good |
| S 324 over Horse Prairie Creek No. S00324004+05001 | 8M E Grant | 1963 | Stringer/Multi-beam or Girder | 92 ft | 241 | Fair |
| S 324 over Medicine Lodge Creek No. S00324005+01001 | 7M E Grant | 1963 | Stringer/Multi-beam or Girder | 73 ft | 241 | Fair |
| CO RD 002 FH 73 over Wise River 106 No. L01002007+00001 | 7M S Wise River | 1971 | Stringer/Multi-beam or Girder | 130 ft | 224 | Good |
| CO RD 002 FH 73 over Wise River 105 No. L01002008+02001 | 8M S Wise River | 1971 | Stringer/Multi-beam or Girder | 76 ft | 224 | Good |
| CO RD 002 FH 73 over Wise River 021 No. L01002010+01001 | 10M S Wise River | 1971 | Stringer/Multi-beam or Girder | 78 ft | 224 | Good |
| CO RD 002 FH 73 over Wise River 020 No. L01002012+03001 | 12M S Wise River | 1971 | Stringer/Multi-beam or Girder | 146 ft | 224 | Fair |
| CO RD O02 FH 73 over Wise River 075 No. L01002012+07001 | 12M S Wise River | 1971 | Stringer/Multi-beam or Girder | 104 ft | 224 | Fair |
| CO RD 002 FH 73 over Wise River 076 No. L01002013+03001 | 13M S Wise River | 1971 | Stringer/Multi-beam or Girder | 126 ft | 224 | Fair |
| CO RD 002 FH 73 over Wise River 019 No. L01002016+09001 | 17M S Wise River | 1987 | Tee Beam | 43 ft | 224 | Fair |
| CO RD 002 FH 73 over Wise River 018 No. L01002018+02001 | 18M S Wise River | 1987 | Tee Beam | 43 ft | 224 | Fair |
| CO RD 002 FH 73 over Wise River 017 No. L01002022+00001 | 22M S Wise River | 1987 | Tee Beam | 86 ft | 224 | Fair |
| Trapper CR RD over Big Hole Overflow 055 No. L01040000+04001 | Melrose | 1973 | Stringer/Multi-beam or Girder | 100 ft | 191 | Fair |
| S 324 over Medicine Lodge Creek No. S00324006+09001 | 5M E Grant | 1963 | Stringer/Multi-beam or Girder | 71 ft | 189 | Fair |
| Big Sheep CR RD over Big Sheep Creek 012 No. 000000000002191 | 15M SW Dell | 2017 | Stringer/Multi-beam or Girder | 55 ft | 178 | Good |
| Big Sheep CR RD C over Big Sheep Creek 134 No. 000000000002192 | 11.5M SW Dell | 2017 | Stringer/Multi-beam or Girder | 55 ft | 178 | Good |
| Big Sheep CR RD over Big Sheep Creek 120 No. 000000000002193 | 11.3M SW Dell | 2017 | Stringer/Multi-beam or Girder | 55 ft | 178 | Good |
| Big Sheep CR RD over Big Sheep Creek 013 No. L01302046+06001 | 10M SW Dell | 2016 | Stringer/Multi-beam or Girder | 55 ft | 178 | Good |
| Big Sheep CR RD over Big Sheep Creek 122 No. L01302047+00001 | 5.6M SW Dell | 1985 | Tee Beam | 32 ft | 178 | Fair |
| Big Sheep CR RD over Big Sheep Creek 014 No. L01302047+03001 | 8.5M SW Dell | 2016 | Stringer/Multi-beam or Girder | 55 ft | 178 | Good |
| Big Sheep CR RD over Big Sheep Creek 015 No. L01302054+05001 | 3M S Dell | 2016 | Stringer/Multi-beam or Girder | 55 ft | 178 | Good |
| HWY 91 N over Big Hole River 041 No. L01311022+02001 | 22M N Dillon | 1940 | Truss - Thru | 240 ft | 158 | Poor |
| Lima Dam Road over Red Rock River No. 000000201902165 | 5M E Lima | 2019 | Stringer/Multi-beam or Girder | 38 ft | 118 | Fair |
| Lima Dam RD over Red Rock River 007 No. L01205005+02001 | 6M E Lima | 1982 | Stringer/Multi-beam or Girder | 45 ft | 118 | Fair |
| Cliff RD over West Bench Canal 028 No. 000000000002144 | 1M W Dillon | 2018 | Stringer/Multi-beam or Girder | 55 ft | 100 | Good |
| Hendricks Mill Roa over Grasshopper Creek No. 000000000007041 | S Bannack | 1980 | Stringer/Multi-beam or Girder | 51 ft | 100 | Fair |
| Hendricks Mill Roa over Grasshopper Creek No. 000000000007042 | Bannack | 1980 | Stringer/Multi-beam or Girder | 51 ft | 100 | Fair |
| Brenner Lane over Bloody Dick Creek No. 000000202102129 | 12 M W Grant | 2020 | Stringer/Multi-beam or Girder | 35 ft | 100 | Good |
| Rock Creek Road over Big Hole River 077 No. 000000202102139 | 3M SW Wisdom | 2021 | Stringer/Multi-beam or Girder | 57 ft | 100 | Good |
| Rock Creek Road over Big Hole River 077 No. 000000202102141 | 3M SW Wisdom | 2021 | Stringer/Multi-beam or Girder | 97 ft | 100 | Good |
| Brenner Lane over Trail Creek No. 000000202108023 | 12 M W Grant | 2020 | Stringer/Multi-beam or Girder | 25 ft | 100 | Good |
| Corinne Trail over Horse Prairie Creek 043 No. 000000202202201 | 3M E Grant | 2022 | Stringer/Multi-beam or Girder | 34 ft | 100 | Poor |
| Blacktail RD over East Bench Canal 006 No. 000000202402163 | 2M S Dillon | 2024 | Stringer/Multi-beam or Girder | 90 ft | 100 | Good |
| Sweetwater Road over Drainage No. 000000202408089 | 2.6M E Dillon | 1980 | Stringer/Multi-beam or Girder | 25 ft | 100 | Fair |
| Red Rock Pass RD over Odell Creek No. 000061570-00260 | 1.2 MI SE of Lakeview | 1992 | Frame | 28 ft | 100 | Fair |
| I 15 Frontage RD over Beaverhead R-Int Ramp No. I00015052+06323 | 8M N Clark Canyon Dam | 1988 | Stringer/Multi-beam or Girder | 104 ft | 100 | Fair |
| Hennaberry RD over Beaverhead River 125 No. L01001001+00001 | Henneberry Road | 2000 | Tee Beam | 91 ft | 100 | Good |
| Upper N Fork RD over N Fk Big Hole River 063 No. L01004006+09001 | 6M NW Wisdom | 1978 | Stringer/Multi-beam or Girder | 41 ft | 100 | Fair |
| Upper N Fork RD over N Fk Bighole River 064 No. L01004007+00001 | 6M NW Wisdom | 1977 | Stringer/Multi-beam or Girder | 46 ft | 100 | Poor |
| Skinner Meadows RD over Governor Creek 130 No. L01006000+03551 | 3M SW Jackson | 2010 | Tee Beam | 65 ft | 100 | Good |
| Bannack Bench RD over Horse Praire Creek 010 No. L01008001+08001 | 1M N Grant | 1981 | Stringer/Multi-beam or Girder | 40 ft | 100 | Fair |
| Bannack Bench RD over Grasshopper Creek 009 No. L01008012+04001 | Bannack | 2012 | Stringer/Multi-beam or Girder | 55 ft | 100 | Good |
| Twin Lakes RD over Big Hole River 080 No. L01012001+05001 | 6M S Wisdom | 1999 | Tee Beam | 86 ft | 100 | Fair |
| Rock Creek RD over Big Hole River 078 No. L01014001+03001 | 3M SW Wisdom | 1989 | Stringer/Multi-beam or Girder | 31 ft | 100 | Fair |
| Rock Creek RD over Big Lake Creek 081 No. L01015000+02001 | 4M SW Wisdom | 1958 | Stringer/Multi-beam or Girder | 28 ft | 100 | Poor |
| W Park ST over Beaverhead River 005 No. L01017008+08001 | 1M W Dillon | 1992 | Stringer/Multi-beam or Girder | 103 ft | 100 | Good |
| Steel Creek RD over Steel Creek 082 No. L01031000+05001 | 1M NE Wisdom | 2012 | Tee Beam | 50 ft | 100 | Good |
| Taylor CR RD over Grasshopper Creek 004 No. L01057000+01001 | 21M W Dillon | 1986 | Stringer/Multi-beam or Girder | 26 ft | 100 | Fair |
| Big Lake CR over Big Hole River 090 No. L01083001+06001 | 8M NW Jackson | 1977 | Stringer/Multi-beam or Girder | 51 ft | 100 | Fair |
| Big Lake CR RD over Big Hole River 091 No. L01083001+09001 | 8M N Jackson | 1976 | Stringer/Multi-beam or Girder | 62 ft | 100 | Fair |
| Big Swamp CR RD / over Big Hole River 089 No. L01085000+03001 | 5M NW Jackson | 1925 | Truss - Thru | 100 ft | 100 | Poor |
| Little Lake CR RD over Big Hole River 087 No. L01086000+04001 | 3M NW Jackson | 1986 | Stringer/Multi-beam or Girder | 52 ft | 100 | Fair |
| Little Lake CR RD over Big Hole River 088 No. L01086000+06001 | 3M NW Jackson | 1974 | Stringer/Multi-beam or Girder | 36 ft | 100 | Fair |
| Miner Lake RD over Governor Creek 092 No. L01095000+07001 | 1M SW Jackson | 1951 | Stringer/Multi-beam or Girder | 42 ft | 100 | Poor |
| Miner Lake RD over Big Hole River 093 No. L01095001+07001 | 2M SW Jackson | 2004 | Tee Beam | 83 ft | 100 | Fair |
| County Road 111 over Horse Prairie Creek 031 No. L01111001+03001 | 8M W Grant | 1920 | Truss - Thru | 54 ft | 100 | Fair |
| Mansfield LN over Horse Prairie Creek 011 No. L01115000+07001 | 2M NW Grant | 2007 | Tee Beam | 61 ft | 100 | Good |
| High Bridge RD over Beaverhead River 125 No. L01196005+04901 | 5M N Clark Canyon Dam | 1980 | Stringer/Multi-beam or Girder | 154 ft | 100 | Fair |
| Stibal LN over Red Rock River 053 No. L01202052+06001 | 9M NE Monida | 1975 | Stringer/Multi-beam or Girder | 77 ft | 100 | Poor |
| Sweetwater RD over East Bench Canal 060 No. L01206003+02001 | 3M E Dillon | 1962 | Stringer/Multi-beam or Girder | 60 ft | 100 | Fair |
| Burma RD over Big Hole River 073 No. L01210000+07001 | 1M SE Glen | 2000 | Stringer/Multi-beam or Girder | 164 ft | 100 | Fair |
| Stoddard DR over East Bench Canal 002 No. L01215003+04001 | 8M NE Dillon | 1962 | Stringer/Multi-beam or Girder | 44 ft | 100 | Fair |
| Stone Creek RD over East Bench Canal 003 No. L01223002+00001 | 6M NE Dillon | 1962 | Stringer/Multi-beam or Girder | 64 ft | 100 | Fair |
| Nissen Lane over Dillon Canal 129 No. L01224000+09001 | 3M NE Dillon | 2010 | Slab | 22 ft | 100 | Good |
| Nissen LN over East Bench Canal 001 No. L01224002+01001 | 3M E Dillon | 1962 | Stringer/Multi-beam or Girder | 52 ft | 100 | Fair |
| White LN over East Bench Canal 102 No. L01238001+00001 | 2M SE Dillon | 1962 | Stringer/Multi-beam or Girder | 56 ft | 100 | Fair |
| Carrigan Lane over Canyon Ditch 127 No. L01241002+03001 | 8M S Dillon | 2011 | Slab | 30 ft | 100 | Good |
| Carrigan LN over East Bench Canal 061 No. L01241003+04001 | 4M E Barretts Int | 1962 | Stringer/Multi-beam or Girder | 69 ft | 100 | Fair |
| Brundage LN over Red Rock River 052 No. L01269004+08001 | 25M NE Monida | 1920 | Truss - Thru | 98 ft | 100 | Poor |
| Frontage Road 280 over Big Sheep Creek 027 No. L01280007+09001 | SE of Dell | 1969 | Stringer/Multi-beam or Girder | 36 ft | 100 | Fair |
| Red Rock Road over Big Sheep Creek 026 No. L01309008+06001 | SE Dell | 1931 | Slab | 22 ft | 100 | Fair |
| Corinne Trail over Horse Praire Creek 042 No. L01310000+08001 | 3M E Grant | 1951 | Stringer/Multi-beam or Girder | 50 ft | 100 | Good |
| Browns Bridge RD over Big Hole River 123 No. L01320003+01001 | 6.2M S Melrose | 1915 | Truss - Thru | 175 ft | 100 | Poor |
| S Railroad Avenue over Blacktail Deer Creek 130 No. M01033000+00101 | Dillon-S Railroad Ave | 2010 | Tee Beam | 46 ft | 100 | Good |
| Argenta RD over Rattlesnake Creek 039 No. L01001006+06001 | 11M NW Dillon | 2012 | Stringer/Multi-beam or Girder | 90 ft | 86 | Good |
| Steel Bridge LN over Red Rock River 084 No. 000000202402186 | 4M NW Lima | 2024 | Stringer/Multi-beam or Girder | 60 ft | 75 | Good |
| Sage Creek RD over Red Rock River 034 No. L01251000+06001 | 1M N Dell | 1977 | Stringer/Multi-beam or Girder | 40 ft | 71 | Fair |
| Sage Creek RD over Sage Creek 024 No. L01251011+07001 | 12M NE Dell | 1985 | Slab | 21 ft | 71 | Fair |
| Gravley RD over Red Rock River 085 No. L01265000+03001 | 4M NW Lima | 1982 | Stringer/Multi-beam or Girder | 48 ft | 62 | Fair |
| Red Rock RD over Limekiln Canyon 022 No. L01309016+03001 | 7M NW Dell | 1931 | Slab | 23 ft | 60 | Poor |
| S Valley RD S-509 over Odell Creek No. 000000000007031 | 29M E Monida | 2002 | Slab | 28 ft | 59 | Good |
| Anderson Lane over West Side Canal 1 No. L01316000+03001 | 6M NE Dillon | 2012 | Stringer/Multi-beam or Girder | 40 ft | 54 | Fair |
| Anderson LN over Beaverhead River 071 No. L01316001+00001 | 5M NE Dillon | 1930 | Truss - Thru | 100 ft | 54 | Fair |
| Bond RD over Sep I 15 12 No. L01316006+05001 | 7M N Dillon | 1973 | Stringer/Multi-beam or Girder | 313 ft | 54 | Fair |
| No Data Entered over Big Hole River No. 010200000035001 | No Data Entered | 2022 | Box Beam or Girders - Multiple | 60 ft | 50 | Good |
| Canyon CR Road over Canyon CR No. 010202000000032 | Canyon CR | 1952 | Stringer/Multi-beam or Girder | 27 ft | 50 | Poor |
| Fs Route 83 over Big Hole River No. 010202000000050 | Big Hole River | 1950 | Stringer/Multi-beam or Girder | 203 ft | 50 | Fair |
| Fdr 2475 over Wise River No. 010202000000102 | Adson Cr. | 1986 | Truss - Thru | 97 ft | 50 | Good |
| Fdr 182 over Miner CR No. 010203000000054 | Miner CR | 1947 | Stringer/Multi-beam or Girder | 36 ft | 50 | Fair |
| No Data Entered over No Data Entered No. 010203000012097 | No Data Entered | 2008 | Arch - Deck | 28 ft | 50 | Good |
| No Data Entered over Canyon Creek No. 010203000035553 | No Data Entered | 2023 | Slab | 37 ft | 50 | Good |
| Road 325 over No Data Entered No. 010206000016346 | No Data Entered | 2014 | Stringer/Multi-beam or Girder | 40 ft | 50 | Good |
| No Data Entered over Birch CR No. 010201000000038 | Birch CR | 1953 | Stringer/Multi-beam or Girder | 27 ft | 40 | Fair |
| No Data Entered over Bloody D--- CR No. 010201000000041 | Bloody D--- CR | 1998 | Stringer/Multi-beam or Girder | 30 ft | 40 | Good |
| Fdr 192 over Rock CR No. 010201000000046 | Rock CR | 1986 | Stringer/Multi-beam or Girder | 67 ft | 40 | Fair |
| Fdr 606 over Birch CR No. 010201000000094 | Birch CR | 1954 | Stringer/Multi-beam or Girder | 25 ft | 40 | Poor |
| Fs RTE 192 over Rock Creek No. 010201000000108 | Rock CR | 1986 | Stringer/Multi-beam or Girder | 67 ft | 40 | Good |
| No Data Entered over No Data Entered No. 010202000011108 | No Data Entered | 2009 | Stringer/Multi-beam or Girder | 61 ft | 40 | Good |
| No Data Entered over Big Lake No. 010203000000049 | Big Lake CR | 1971 | Stringer/Multi-beam or Girder | 25 ft | 40 | Fair |
| Fdr 90 over Steel CR No. 010203000000058 | Steel CR | 1954 | Stringer/Multi-beam or Girder | 24 ft | 40 | Fair |
| Lower N Fork RD over N Fk Big Hole River 069 No. 000000202402121 | 6M N Wisdom | 2024 | Stringer/Multi-beam or Girder | 55 ft | 35 | Fair |
| Lower N Fork RD over Swamp Creek 070 No. L01003002+05001 | 3M N Wisdom | 1975 | Stringer/Multi-beam or Girder | 32 ft | 35 | Fair |
| Lower N Fork RD over Irrigation Canal 068 No. L01003006+06001 | 7M N Wisdom | 1994 | Channel Beam | 29 ft | 35 | Fair |
Structure types in Beaverhead County
| Stringer/Multi-beam or Girder | 165 | 72.7% |
| Slab | 29 | 12.8% |
| Tee Beam | 15 | 6.6% |
| Truss - Thru | 10 | 4.4% |
| Culvert | 2 | 0.9% |
| Other | 2 | 0.9% |
| Arch - Deck | 1 | 0.4% |
| Channel Beam | 1 | 0.4% |
| Frame | 1 | 0.4% |
| Box Beam or Girders - Multiple | 1 | 0.4% |
Other counties in Montana
- Big Horn County 133
- Blaine County 102
- Broadwater County 37
- Carbon County 81
- Carter County 42
- Cascade County 185
- Chouteau County 43
- Custer County 71
- Daniels County 33
- Dawson County 109
- Deer Lodge County 67
- Fallon County 38
- Fergus County 158
- Flathead County 204
- Gallatin County 212
- Garfield County 26
- Glacier County 71
- Golden Valley County 17
- Granite County 73
- Hill County 46
- Jefferson County 136
- Judith Basin County 45
- Lake County 116
- Lewis and Clark County 204
- Liberty County 10
- Lincoln County 191
- Madison County 98
- McCone County 43
- Meagher County 53
- Mineral County 153
- Missoula County 206
- Musselshell County 28
- Park County 126
- Petroleum County 26
- Phillips County 101
- Pondera County 96
- Powder River County 23
- Powell County 113
- Prairie County 46
- Ravalli County 150
- Richland County 97
- Roosevelt County 57
- Rosebud County 112
- Sanders County 120
- Sheridan County 66
- Silver Bow County 70
- Stillwater County 92
- Sweet Grass County 94
- Teton County 82
- Toole County 35
- Treasure County 26
- Valley County 103
- Wheatland County 27
- Wibaux County 25
- Yellowstone County 290