Gallatin County, Montana bridges
Gallatin County has 212 bridges and culverts in the National Bridge Inventory, the oldest built in 1894. 12 (6%) are rated poor. The most common type is stringer/multi-beam or girder (70%).
- Bridges
- 212
- Good
- 20%
- Fair
- 74%
- Poor
- 6%
- 12 bridges
- Average age
- 47.6 yrs
- Posted or closed
- 29
Map of bridges in Gallatin County
Green good, amber fair, red poor. Click a marker for details.Search bridges in Gallatin County
Type at least two characters, or pick a condition or type, to search every bridge in the county.
Condition
Good20%(43)
Fair74%(157)
Poor6%(12)
When they were built
Busiest
- N Seventh Ave over Int N 7th Ave-I 90Fair26,020 vehicles/day
- US 191-HUFFINE LN over Hyalite CreekFair25,670 vehicles/day
- N 19th Ave over Int N 19th AveFair23,992 vehicles/day
- I 90 over Walking PathFair21,232 vehicles/day
- I 90 over Int Airway BlvdFair15,554 vehicles/day
Longest
- Fair
- Fair
- Fair
- Fair
- I 90 over RRFair427 ft
Oldest
- Old Town RD over Jefferson River 063PoorBuilt 1894
- Old Town RD over Jefferson River 004PoorBuilt 1897
- Williams Br RD over Jefferson River 046FairBuilt 1898
- Axtell Anceny RD over Gallatin River 084PoorBuilt 1919
- Frontage Rd-S 205 over Camp CreekFairBuilt 1920
All bridges in Gallatin County
Busiest first · showing 1–200 of 212| Bridge | Location | Built | Type | Length | Daily traffic | Condition |
|---|---|---|---|---|---|---|
| N Seventh Ave over Int N 7th Ave-I 90 No. U01207001+02231 | Bozeman-N Seventh Ave | 2014 | Stringer/Multi-beam or Girder | 200 ft | 26,020 | Fair |
| US 191-HUFFINE LN over Hyalite Creek No. P00050082+07571 | 4M W Bozeman | 1956 | Stringer/Multi-beam or Girder | 32 ft | 25,670 | Fair |
| N 19th Ave over Int N 19th Ave No. S00412000+04791 | Bozeman-N 19th Ave | 1994 | Stringer/Multi-beam or Girder | 342 ft | 23,992 | Fair |
| I 90 over Walking Path No. I00090307+08431 | Bozeman | 2011 | Arch - Thru | 32 ft | 21,232 | Fair |
| I 90 over Int Airway Blvd No. I00090299+04901 | 1M E Belgrade | 2014 | Stringer/Multi-beam or Girder | 149 ft | 15,554 | Fair |
| I 90 over Int Airway Blvd No. I00090299+04902 | 1M E Belgrade | 2014 | Stringer/Multi-beam or Girder | 149 ft | 15,554 | Fair |
| I 90 over Sep Valley Center Spur No. I00090303+05881 | 2.5M W Bozeman | 1966 | Stringer/Multi-beam or Girder | 114 ft | 15,554 | Fair |
| I 90 over Sep E Valley Center Spur No. I00090303+05882 | 2.5M W Bozeman | 1966 | Stringer/Multi-beam or Girder | 114 ft | 15,554 | Fair |
| S 84-NORRIS RD over Gallatin River No. P00084027+09401 | 7M W Bozeman | 1987 | Stringer/Multi-beam or Girder | 152 ft | 10,845 | Fair |
| E Kagy Blvd over Bozeman Creek No. U01212001+08001 | Bozeman-E Kagy Blvd | 1984 | Stringer/Multi-beam or Girder | 57 ft | 10,757 | Fair |
| I 90 over Sep N Rouse Ave-Rr No. I00090307+06281 | Bozeman | 2011 | Stringer/Multi-beam or Girder | 435 ft | 10,616 | Fair |
| I 90 over Sep N Rouse Ave-Rr No. I00090307+06282 | Bozeman | 2010 | Stringer/Multi-beam or Girder | 435 ft | 10,616 | Fair |
| I 90 over Sep L Street No. I00090308+00001 | Bozeman | 1968 | Stringer/Multi-beam or Girder | 143 ft | 10,616 | Fair |
| I 90 over Sep L Street No. I00090308+00002 | Bozeman | 1968 | Stringer/Multi-beam or Girder | 145 ft | 10,616 | Fair |
| I 90 over RR No. I00090309+00591 | Bozeman | 1971 | Stringer/Multi-beam or Girder | 298 ft | 10,616 | Fair |
| US 191 FH 42 over Gallatin River No. P00050070+04611 | 5M S Gallatin Gateway | 1958 | Stringer/Multi-beam or Girder | 266 ft | 10,221 | Fair |
| I 90 over RR No. I00090309+00592 | Bozeman | 1971 | Stringer/Multi-beam or Girder | 298 ft | 9,819 | Fair |
| I 90 over Int E Bozeman-P 50 No. I00090309+03701 | Bozeman | 1971 | Stringer/Multi-beam or Girder | 204 ft | 9,819 | Fair |
| I 90 over Int E Bozeman-P 50 No. I00090309+03702 | Bozeman | 1971 | Stringer/Multi-beam or Girder | 206 ft | 9,819 | Fair |
| I 90 over Sep Fort Ellis Road No. I00090310+09781 | 1.2M E Bozeman | 1971 | Slab | 79 ft | 9,819 | Fair |
| I 90 over Sep Fort Ellis Road No. I00090310+09782 | 1.2M E Bozeman | 1971 | Slab | 79 ft | 9,819 | Fair |
| I 90 over Int Bear Canyon No. I00090313+04471 | 3.7M E Bozeman | 1962 | Stringer/Multi-beam or Girder | 113 ft | 9,819 | Fair |
| I 90 over Int Bear Canyon No. I00090313+04472 | 3.7M E Bozeman | 1962 | Stringer/Multi-beam or Girder | 113 ft | 9,819 | Fair |
| I 90 over RR No. I00090314+00831 | 4.3M E Bozeman | 2006 | Stringer/Multi-beam or Girder | 427 ft | 9,819 | Fair |
| I 90 over RR No. I00090314+00832 | 4.3M E Bozeman | 2006 | Stringer/Multi-beam or Girder | 427 ft | 9,819 | Fair |
| I 90 over Madison River-Rr No. I00090278+08571 | 0.6M E Three Forks | 1964 | Stringer/Multi-beam or Girder | 736 ft | 9,762 | Fair |
| I 90 over Madison River-Rr No. I00090278+08572 | 0.6M E Three Forks | 1964 | Stringer/Multi-beam or Girder | 625 ft | 9,762 | Fair |
| I 90 over Darlington Ditch No. I00090279+05341 | 1.9M E Three Forks | 1963 | Stringer/Multi-beam or Girder | 144 ft | 9,762 | Fair |
| I 90 over Darlington Ditch No. I00090279+05342 | 1.9M E Three Forks | 1963 | Stringer/Multi-beam or Girder | 144 ft | 9,762 | Fair |
| I 90 over Madison River Overflow No. I00090280+00731 | 2.5M E Three Forks | 1963 | Stringer/Multi-beam or Girder | 92 ft | 9,762 | Fair |
| I 90 over Madison River Overflow No. I00090280+00732 | 2.5M E Three Forks | 1963 | Stringer/Multi-beam or Girder | 92 ft | 9,762 | Fair |
| I 90 over Madison Road No. I00090280+03611 | 3.1M E Three Forks | 1963 | Stringer/Multi-beam or Girder | 128 ft | 9,762 | Fair |
| I 90 over Madison Road No. I00090280+03612 | 3.1M E Three Forks | 1963 | Stringer/Multi-beam or Girder | 128 ft | 9,762 | Fair |
| I 90 over Int Logan No. I00090283+02651 | Logan | 1963 | Stringer/Multi-beam or Girder | 143 ft | 9,762 | Fair |
| I 90 over Int Logan No. I00090283+02652 | Logan | 1963 | Stringer/Multi-beam or Girder | 143 ft | 9,762 | Good |
| Lone Mountain Trl over W Fork W Gallatin 001 No. L16064000+03081 | 2M E Big Sky | 1972 | Stringer/Multi-beam or Girder | 103 ft | 9,730 | Fair |
| Lone Mountain Trl over Middle Fk W Gallatin 004 No. L16064003+04741 | Big Sky-Lone Mountain Trl | 1979 | Stringer/Multi-beam or Girder | 209 ft | 9,730 | Fair |
| I 90 over Manhattan South RD No. I00090289+02721 | 0.6M E Manhattan | 1964 | Stringer/Multi-beam or Girder | 164 ft | 9,726 | Fair |
| I 90 over Manhattan South RD No. I00090289+02722 | 0.6M E Manhattan | 1964 | Stringer/Multi-beam or Girder | 163 ft | 9,726 | Fair |
| I 90 over Camp Creek No. I00090290+07391 | 1.9M E Manhattan | 1965 | Stringer/Multi-beam or Girder | 83 ft | 9,726 | Good |
| I 90 over Camp Creek No. I00090290+07392 | 1.9M E Manhattan | 1965 | Stringer/Multi-beam or Girder | 83 ft | 9,726 | Good |
| I 90 over Baker Creek No. I00090290+09511 | 1.9M E Manhattan | 1965 | Stringer/Multi-beam or Girder | 93 ft | 9,726 | Good |
| I 90 over Baker Creek No. I00090290+09512 | 1.9M E Manhattan | 1965 | Stringer/Multi-beam or Girder | 93 ft | 9,726 | Good |
| I 90 over Sep Heeb Road No. I00090291+06371 | 2.5M E Manhattan | 1965 | Stringer/Multi-beam or Girder | 115 ft | 9,726 | Fair |
| I 90 over Sep Heeb Road No. I00090291+06372 | 2.5M E Manhattan | 1965 | Stringer/Multi-beam or Girder | 115 ft | 9,726 | Good |
| I 90 over Gallatin River No. I00090292+04251 | 3.1M E Manhattan | 1965 | Stringer/Multi-beam or Girder | 206 ft | 9,726 | Fair |
| I 90 over Gallatin River No. I00090292+04252 | 3.1M E Manhattan | 1965 | Stringer/Multi-beam or Girder | 206 ft | 9,726 | Fair |
| I 90 over Sep Thorpe Road No. I00090293+02131 | 5M W Belgrade | 1965 | Stringer/Multi-beam or Girder | 114 ft | 9,726 | Fair |
| I 90 over Sep Thorpe Road No. I00090293+02132 | 5M W Belgrade | 1965 | Stringer/Multi-beam or Girder | 114 ft | 9,726 | Fair |
| Springhill RD over East Gallatin River No. S00411000+04681 | 3M NW Bozeman | 1990 | Slab | 80 ft | 9,107 | Fair |
| Springhill RD over Churn Creek No. S00411001+02281 | 4M NW Bozeman | 1990 | Slab | 31 ft | 9,107 | Fair |
| US 191 FH 42 over West Fork Gallatin River No. P00050047+09981 | 2M E Big Sky | 2009 | Stringer/Multi-beam or Girder | 97 ft | 8,952 | Fair |
| US 191 FH 42 over Gallatin River No. P00050049+08111 | 4M NE Big Sky | 1952 | Tee Beam | 160 ft | 8,952 | Fair |
| US 191 FH 42 over Swan Creek No. P00050057+02881 | 12M NE Big Sky | 2009 | Stringer/Multi-beam or Girder | 58 ft | 8,952 | Fair |
| US 191 FH 42 over Gallatin River No. P00050061+03291 | 14M S Gallatin Gateway | 1950 | Stringer/Multi-beam or Girder | 234 ft | 8,952 | Fair |
| US 191 FH 42 over Spanish Creek No. P00050068+02171 | 7M S Gallatin Gateway | 1931 | Tee Beam | 70 ft | 8,952 | Fair |
| N 19th Ave over Rr-S 205 No. S00412000+03561 | Bozeman-N 19th Ave | 1994 | Stringer/Multi-beam or Girder | 317 ft | 8,938 | Fair |
| I 90 over Jefferson River No. I00090277+04471 | 0.6M W Three Forks | 1968 | Stringer/Multi-beam or Girder | 273 ft | 8,575 | Good |
| I 90 over Jefferson River No. I00090277+04472 | 0.6M W Three Forks | 1968 | Stringer/Multi-beam or Girder | 274 ft | 8,575 | Good |
| I 90 over Jefferson River Overflow No. I00090277+08261 | Three Forks | 1969 | Stringer/Multi-beam or Girder | 255 ft | 8,575 | Fair |
| I 90 over Jefferson River Overflow No. I00090277+08262 | Three Forks | 1969 | Stringer/Multi-beam or Girder | 255 ft | 8,575 | Fair |
| I 90 over Abandoned RR No. I00090277+09261 | Three Forks | 1969 | Stringer/Multi-beam or Girder | 198 ft | 8,575 | Fair |
| I 90 over Abandoned RR No. I00090277+09262 | Three Forks | 1969 | Stringer/Multi-beam or Girder | 203 ft | 8,575 | Poor |
| P 86-BRIDGER DR over East Gallatin River No. P00086001+04821 | 1M N Bozeman | 1984 | Slab | 78 ft | 8,443 | Fair |
| P 86-BRIDGER DR over Bridger Creek No. P00086003+01311 | 2M NE Bozeman | 2005 | Slab | 85 ft | 8,443 | Fair |
| I 90 over Int Trail Creek No. I00090316+07671 | 7.4M E Bozeman | 1962 | Stringer/Multi-beam or Girder | 129 ft | 8,272 | Fair |
| I 90 over Int Trail Creek No. I00090316+07672 | 7.4M E Bozeman | 1962 | Stringer/Multi-beam or Girder | 129 ft | 8,272 | Fair |
| I 90 over Int Jackson Creek No. I00090319+06691 | 9.9M E Bozeman | 1979 | Stringer/Multi-beam or Girder | 130 ft | 8,272 | Fair |
| I 90 over Int Jackson Creek No. I00090319+06692 | 9.9M E Bozeman | 1979 | Stringer/Multi-beam or Girder | 130 ft | 8,272 | Fair |
| E Griffin DR over E Gallatin River 090 No. M16012000+00101 | 1M N Bozeman | 1989 | Tee Beam | 53 ft | 7,375 | Fair |
| E Valley Center RD over Hyalite Creek No. S00235001+04761 | 3M NW Bozeman | 2011 | Stringer/Multi-beam or Girder | 44 ft | 6,192 | Fair |
| N 7th Ave-Frtg RD over RR - Mrl No. U01207002+01081 | Bozeman-N Seventh Ave | 1993 | Stringer/Multi-beam or Girder | 391 ft | 6,113 | Fair |
| Lone Mountain Trl over N Fk W Gallatin Riv 005 No. L16064003+09001 | 4M W Big Sky | 1982 | Culvert | 20 ft | 5,180 | Good |
| Airport RD over Hyalite Creek No. 000000202302974 | 2M E Belgrade | 2022 | Tee Beam | 40 ft | 4,997 | Good |
| US 20 over S Fork Madison River No. P00012004+04611 | 4M W West Yellowstone | 2009 | Stringer/Multi-beam or Girder | 82 ft | 4,666 | Fair |
| US 287 over Madison River No. P00050003+07221 | 3M N West Yellowstone | 1968 | Stringer/Multi-beam or Girder | 138 ft | 4,098 | Fair |
| Baxter Lane E over Hyalite Creek No. 000000202003016 | 5M W Bozeman | 2019 | Tee Beam | 41 ft | 3,839 | Good |
| US 191 FH 45 over Cougar Creek No. P00050007+05621 | 7M N West Yellowstone | 1964 | Slab | 37 ft | 3,139 | Fair |
| Frontage Rd-S 205 over Gallatin River No. S00205014+05181 | 3M SE Manhattan | 1949 | Stringer/Multi-beam or Girder | 252 ft | 3,038 | Fair |
| US 191 FH 42 over Grayling Creek No. P00050010+00251 | 10M N West Yellowstone | 2012 | Stringer/Multi-beam or Girder | 122 ft | 2,605 | Fair |
| US 191 FH 42 over Teepee Creek No. P00050011+01001 | 11M N West Yellowstone | 1962 | Culvert | 29 ft | 2,605 | Poor |
| US 191 FH 42 over Grayling Creek No. P00050014+05001 | 14M N West Yellowstone | 1962 | Culvert | 39 ft | 2,605 | Fair |
| US 191 FH 42 over Grayling Creek No. P00050014+08001 | 15M N West Yellowstone | 1962 | Culvert | 39 ft | 2,605 | Fair |
| US 191 over Grayling Creek No. P00050015+01001 | 15M N West Yellowstone | 1962 | Culvert | 47 ft | 2,605 | Poor |
| US 191 over Grayling Creek No. P00050016+02001 | 16M N West Yellowstone | 1962 | Culvert | 39 ft | 2,605 | Fair |
| US 191 over Gallatin River No. P00050023+06711 | 23M N West Yellowstone | 1955 | Tee Beam | 120 ft | 2,605 | Fair |
| US 191 over Specimen Creek No. P00050026+04431 | 24M SE Big Sky | 1955 | Tee Beam | 64 ft | 2,605 | Fair |
| US 191 FH 42 over West Gallatin River No. P00050032+07581 | 17M SE Big Sky | 1959 | Tee Beam | 122 ft | 2,325 | Fair |
| US 191 FH 42 over Taylor Fork Gallatin R No. P00050033+09531 | 16M SE Big Sky | 1959 | Tee Beam | 105 ft | 2,325 | Good |
| Frontage Rd-S 205 over RR No. S00205011+09551 | Manhattan | 2010 | Stringer/Multi-beam or Girder | 374 ft | 2,274 | Fair |
| Frontage Rd-S 205 over Camp Creek No. S00205012+08751 | 2M SE Manhattan | 1920 | Tee Beam | 43 ft | 2,274 | Fair |
| Frontage Rd-S 205 over Baker Creek No. S00205013+00791 | 2M SE Manhattan | 1921 | Tee Beam | 52 ft | 2,274 | Fair |
| Bozeman Trail RD over Bear Creek No. 000000202108024 | 2M SE Bozeman | 2019 | Slab | 25 ft | 2,211 | Good |
| Dry Creek RD over East Gallatin River No. S00290004+05001 | 3M N Belgrade | 1957 | Stringer/Multi-beam or Girder | 50 ft | 2,133 | Fair |
| Dry Creek RD over E Gallatin River Overflo No. S00290004+07001 | 4M N Belgrade | 1957 | Stringer/Multi-beam or Girder | 50 ft | 2,133 | Fair |
| Dry Creek RD over Reese Creek No. S00290005+03001 | 4M N Belgrade | 1957 | Stringer/Multi-beam or Girder | 38 ft | 2,133 | Fair |
| Churchill RD over Stockpass Darinage No. 000000202406587 | 3M S Manhattan | 2024 | Culvert | 22 ft | 2,002 | Good |
| Churchill RD S 288 over Camp Creek No. 000000202406588 | 2M N Amsterdam | 2024 | Culvert | 26 ft | 2,002 | Good |
| Churchill RD over Int Manhattan-I 90 No. S00288000+09091 | Manhattan | 1964 | Stringer/Multi-beam or Girder | 237 ft | 2,002 | Fair |
| Amsterdam RD over Baker Creek No. S00347002+07001 | 4M SW Belgrade | 1952 | Stringer/Multi-beam or Girder | 97 ft | 1,889 | Fair |
| Amsterdam RD over Gallatin River No. S00347003+04001 | 3M SW Belgrade | 1951 | Stringer/Multi-beam or Girder | 181 ft | 1,889 | Fair |
| S 19th RD over Hyalite Creek No. S00345006+01001 | 6M SW Bozeman | 1988 | Stringer/Multi-beam or Girder | 32 ft | 1,856 | Fair |
| L ST over E Gallatin River 091 No. L16010000+05001 | NE Bozeman | 2001 | Slab | 32 ft | 1,761 | Fair |
| S 2 over Jefferson River No. P00013093+06931 | 2M W Three Forks | 1949 | Stringer/Multi-beam or Girder | 247 ft | 1,515 | Fair |
| S 205-FRONTAGE RD over Madison River No. S00205000+04911 | 1M E Three Forks | 1948 | Stringer/Multi-beam or Girder | 224 ft | 1,501 | Fair |
| S 205-FRONTAGE RD over Mid Fork Madison River No. S00205001+02381 | 2M E Three Forks | 1990 | Slab | 98 ft | 1,501 | Fair |
| Logan Trident RD over Gallatin River 008 No. L16200000+01001 | 1M W Logan | 1964 | Stringer/Multi-beam or Girder | 200 ft | 1,328 | Fair |
| W Dry Creek RD over Baker Creek No. S00346002+03611 | 1M E Manhattan | 1967 | Stringer/Multi-beam or Girder | 101 ft | 1,287 | Poor |
| W Dry Creek RD over Gallatin River No. S00346002+07281 | 2M E Manhattan | 1967 | Stringer/Multi-beam or Girder | 195 ft | 1,287 | Fair |
| US 287 over RR No. P00013082+04411 | 11M SW Three Forks | 1950 | Stringer/Multi-beam or Girder | 374 ft | 1,227 | Fair |
| Frontage Rd-S 205 over RR No. S00205005+00671 | Logan | 2007 | Stringer/Multi-beam or Girder | 313 ft | 1,162 | Fair |
| Frontage Rd-S 205 over Drainage No. S00205008+03441 | 2M NW Manhattan | 1931 | Slab | 23 ft | 1,162 | Fair |
| US 287 over Grayling Creek No. P00087020+02541 | 10M NW West Yellowstone | 1964 | Slab | 76 ft | 1,132 | Fair |
| US 287 over Beaver Creek No. P00087007+01971 | 24M NW West Yellowstone | 1964 | Slab | 125 ft | 1,010 | Fair |
| US 287 over Cabin Creek No. P00087008+05951 | 23M NW West Yellowstone | 1964 | Tee Beam | 83 ft | 1,010 | Fair |
| Breeze Way Road over Willow Creek 016 No. 000000201902998 | 2M S Willow Creek | 2019 | Slab | 32 ft | 1,004 | Good |
| W Dry Creek RD over East Gallatin River No. S00346006+00001 | 5M E Manhattan | 1967 | Stringer/Multi-beam or Girder | 133 ft | 825 | Fair |
| Penwell Bridge RD over E Gallatin River 059 No. L16003002+00001 | 3M NE Belgrade | 1985 | Stringer/Multi-beam or Girder | 93 ft | 571 | Fair |
| Axtell Anceny RD over Gallatin River 084 No. L16494000+05001 | 2M N Gallatin Gateway | 1919 | Truss - Thru | 142 ft | 569 | Poor |
| Trident RD over Gallatin River No. S00286003+00001 | 1M SW Trident | 1975 | Stringer/Multi-beam or Girder | 184 ft | 496 | Fair |
| Brackett CR RD over Brackett Creek 121 No. L16006015+04001 | 19M N Bozeman | 1989 | Stringer/Multi-beam or Girder | 28 ft | 354 | Fair |
| Dry Creek RD over Dry Creek 119 No. S00290009+04001 | 9M N Belgrade | 2009 | Tee Beam | 31 ft | 265 | Fair |
| Dry Creek RD over Dry Creek No. S00290010+08001 | 10M N Belgrade | 1929 | Stringer/Multi-beam or Girder | 27 ft | 204 | Fair |
| Dry Creek RD over Dry Creek No. S00290013+03001 | 13M N Belgrade | 2012 | Stringer/Multi-beam or Girder | 40 ft | 204 | Good |
| Moffit Gulch RD over Rocky Creek 044 No. L16192000+05001 | 3M SE Bozeman | 1976 | Stringer/Multi-beam or Girder | 29 ft | 149 | Fair |
| Old Yellowstone TR over Willow Creek No. S00287007+09001 | 1M S Willow Creek | 1949 | Stringer/Multi-beam or Girder | 26 ft | 133 | Fair |
| Heeb RD over Baker Creek 080 No. L16063002+03001 | 5M W Belgrade | 1992 | Stringer/Multi-beam or Girder | 30 ft | 104 | Fair |
| Hamilton Road over Smith Creek No. 000000000007070 | 6M NE Belgrade | 2017 | Stringer/Multi-beam or Girder | 25 ft | 100 | Good |
| Beatty Road over Farmers Canal No. 000000000007071 | 2M SE Four Corners | 2017 | Stringer/Multi-beam or Girder | 30 ft | 100 | Good |
| Nixon Gulch Road over Gallatin River No. 000000202002986 | 2M NE Manhattan | 2020 | Tee Beam | 255 ft | 100 | Good |
| Wilson Creek RD over Irrigation Canal No. 000000202008008 | 4M S Gallatin Gateway | 2019 | Slab | 30 ft | 100 | Good |
| Hamilton RD over Reese Creek No. 000000202008014 | 8M NE Belgrade | 2020 | Stringer/Multi-beam or Girder | 25 ft | 100 | Good |
| Beatty RD over South Dry Creek No. 000000202308072 | 2M SE Four Corners | 2022 | Stringer/Multi-beam or Girder | 40 ft | 100 | Good |
| Old Town RD over Jefferson River 004 No. L04419003+05001 | 2M N Three Forks | 1897 | Truss - Thru | 193 ft | 100 | Poor |
| Story Hill RD over Rocky Creek No. L16008000+02001 | 2M E Bozeman | 2005 | Slab | 26 ft | 100 | Fair |
| Kelly Canyon RD over Bridger Creek 047 No. L16009000+02001 | 6M NE Bozeman | 1983 | Stringer/Multi-beam or Girder | 32 ft | 100 | Poor |
| Kelly Canyon RD over Rocky Creek 042 No. L16009005+03001 | 2M E Bozeman | 2001 | Tee Beam | 59 ft | 100 | Fair |
| Maiden Rock RD over Bridger Creek 107 No. L16014000+01001 | 2M E Bozeman | 1922 | Stringer/Multi-beam or Girder | 24 ft | 100 | Poor |
| Maiden Rock RD over Bridger Creek 106 No. L16014000+05001 | 3M E Bozeman | 1940 | Stringer/Multi-beam or Girder | 33 ft | 100 | Poor |
| Story Mill RD over Bridger Creek 088 No. L16025000+05001 | 2M N Bozeman | 1978 | Channel Beam | 42 ft | 100 | Fair |
| Manley RD over E Gallatin River 089 No. L16027001+00001 | 2M N Bozeman | 1996 | Tee Beam | 88 ft | 100 | Fair |
| Spain Bridge RD over E Gallatin River 058 No. L16053007+07001 | 5M E Belgrade | 1975 | Tee Beam | 42 ft | 100 | Fair |
| Airport RD over E Gallatin River 097 No. L16055001+03001 | 3M E Belgrade | 2012 | Tee Beam | 65 ft | 100 | Good |
| Hamilton RD over E Gallatin River 076 No. L16077001+06001 | 5M E Central Park | 1928 | Truss - Thru | 82 ft | 100 | Fair |
| Biggs Haugland RD over Dry Creek 079 No. L16095000+02001 | 2M S Menard | 1985 | Stringer/Multi-beam or Girder | 28 ft | 100 | Fair |
| Old Town RD over Jefferson River 063 No. L16201000+07001 | 2M N Three Forks | 1894 | Truss - Thru | 156 ft | 100 | Poor |
| Dry CR School RD over E Gallatin River 032 No. L16221000+06001 | 3M E Manhattan | 1924 | Truss - Thru | 82 ft | 100 | Fair |
| Spaulding Br RD over E Gallatin River 077 No. L16223002+08001 | 4M NE Manhattan | 1997 | Tee Beam | 113 ft | 100 | Fair |
| Swamp RD over E Gallatin River 074 No. L16229000+08001 | 6M E Manhattan | 2008 | Tee Beam | 102 ft | 100 | Good |
| Sixteen Mile Road over Sixteen Mile Creek 070 No. L16235010+07001 | Maudlow | 1974 | Stringer/Multi-beam or Girder | 70 ft | 100 | Fair |
| Sixteen Mile Road over Sixteen Mile Creek 071 No. L16235013+04001 | 2M E Maudlow | 1954 | Stringer/Multi-beam or Girder | 31 ft | 100 | Fair |
| 16 Mile Creek RD over Mid Fork 16-MILE CR 072 No. L16235015+09001 | 4M E Maudlow | 1996 | Stringer/Multi-beam or Girder | 28 ft | 100 | Fair |
| Camp Creek RD over Camp Creek 018 No. L16400007+00001 | S Amsterdam | 1986 | Stringer/Multi-beam or Girder | 30 ft | 100 | Fair |
| Camp Creek RD over Camp Creek 017 No. L16400007+08001 | Amsterdam | 2002 | Culvert | 23 ft | 100 | Good |
| Amsterdam RD over Camp Creek 060 No. L16401000+02001 | Amsterdam | 1956 | Stringer/Multi-beam or Girder | 25 ft | 100 | Fair |
| W Cameron Br RD over Gallatin River 048 No. L16403001+09001 | 1M SW Belgrade | 2007 | Stringer/Multi-beam or Girder | 152 ft | 100 | Fair |
| Buttelman RD over Willow Creek 061 No. L16408002+05001 | 4M S Willow Creek | 1923 | Stringer/Multi-beam or Girder | 24 ft | 100 | Fair |
| Manhattan S RD over Irrigation Canal 117 No. L16441000+02001 | 1M S Manhattan | 1956 | Slab | 31 ft | 100 | Fair |
| Stagecoach Trl RD over Baker Creek Overflow 081 No. L16447001+07001 | 5M NW Belgrade | 1965 | Stringer/Multi-beam or Girder | 31 ft | 100 | Fair |
| Stagecoach Trl RD over Baker Creek 082 No. L16447001+09001 | 2M NW Belgrade | 1959 | Stringer/Multi-beam or Girder | 35 ft | 100 | Poor |
| Canal RD over Godfrey Creek 083 No. L16477000+01001 | 2M S Churchill | 1988 | Stringer/Multi-beam or Girder | 24 ft | 100 | Fair |
| Pine Butte RD over Highline Canal 114 No. L16491001+00001 | 6M S Belgrade | 1992 | Stringer/Multi-beam or Girder | 23 ft | 100 | Fair |
| Pine Butte RD over Highline Canal 116 No. L16491001+02001 | 6M S Belgrade | 1987 | Stringer/Multi-beam or Girder | 27 ft | 100 | Fair |
| River RD over Lowline Canal 056 No. L16493001+02001 | 4M N Gallatin Gateway | 1933 | Culvert | 22 ft | 100 | Fair |
| Gateway S RD over Gallatin River 020 No. L16503005+07001 | 1M W Gallatin Gateway | 2001 | Stringer/Multi-beam or Girder | 157 ft | 100 | Fair |
| Gateway S RD over Gallatin River 019 No. L16503006+01001 | Gallatin Gateway | 2001 | Stringer/Multi-beam or Girder | 148 ft | 100 | Fair |
| Grayling CR RD over Grayling Creek 111 No. L16632000+05001 | 10M N West Yellowstone | 1977 | Stringer/Multi-beam or Girder | 33 ft | 100 | Fair |
| Cottonwood RD over S Cottonwood Creek 123 No. L16703003+05001 | 3.5M SE Gallatin Gateway | 2014 | Stringer/Multi-beam or Girder | 40 ft | 100 | Fair |
| Cottonwood Road over S Cottonwood Creek 124 No. L16703003+06001 | 3.6M SE Gallatin Gateway | 2014 | Stringer/Multi-beam or Girder | 40 ft | 100 | Fair |
| Monforton Sch RD over Hyalite Creek 093 No. L16720000+01001 | 4M W Bozeman | 2014 | Stringer/Multi-beam or Girder | 35 ft | 100 | Good |
| Monforton Sch RD over Hyalite Creek 105 No. L16720001+01001 | 4M W Bozeman | 1992 | Stringer/Multi-beam or Girder | 32 ft | 100 | Fair |
| Gooch Hill Road over Hyalite Creek 050 No. L16725005+00001 | 5M S Bozeman | 2016 | Stringer/Multi-beam or Girder | 40 ft | 100 | Good |
| Cobb Hill RD over Hyalite Creek 050 No. L16728000+01001 | 4M W Bozeman | 1987 | Stringer/Multi-beam or Girder | 28 ft | 100 | Fair |
| Blackwood RD over Hyalite Creek 052 No. L16739003+04001 | 4M SW Bozeman | 1971 | Stringer/Multi-beam or Girder | 31 ft | 100 | Fair |
| Chapman RD over Hyalite Creek 049 No. L16744000+04001 | 5M SW Bozeman | 2014 | Stringer/Multi-beam or Girder | 40 ft | 100 | Fair |
| Johnson Road over Hyalite Creek 125 No. L16745002+07001 | 6M SW Bozeman | 2014 | Stringer/Multi-beam or Girder | 34 ft | 100 | Good |
| Goldenstein LN over Sourdough Creek 053 No. L16757000+08001 | 1M S Bozeman | 1982 | Stringer/Multi-beam or Girder | 67 ft | 100 | Good |
| Law RD over S Cottonwood Creek 011 No. L16782001+08001 | 1M E Gallatin Gateway | 1975 | Channel Beam | 25 ft | 100 | Fair |
| Cottonwood Cnyn RD over Cottonwood Creek 041 No. L16810000+03001 | 4M SE Gallatin Gateway | 1986 | Stringer/Multi-beam or Girder | 32 ft | 100 | Fair |
| Little Bear RD over W Gallatin Canal 119 No. L16811000+02001 | 2M S Gallatin Gateway | 2005 | Stringer/Multi-beam or Girder | 23 ft | 100 | Fair |
| Little Bear RD over Big Bear Creek 118 No. L16818001+09001 | 4M S Gallatin Gateway | 1987 | Stringer/Multi-beam or Girder | 29 ft | 100 | Fair |
| Ice Pond RD over Bozeman Creek 122 No. L16894000+01001 | Bozeman-Ice Pond RD | 2010 | Stringer/Multi-beam or Girder | 35 ft | 100 | Fair |
| E Tamarack Street over Bozeman Creek 115 No. M16012000+05001 | Bozeman-E Tamarack ST | 1982 | Tee Beam | 26 ft | 100 | Fair |
| S 2 over E Three Forks Int I 90 No. P00013097+03301 | Three Forks | 2010 | Stringer/Multi-beam or Girder | 228 ft | 100 | Fair |
| S 85-JACKRABBIT LN over Int Belgrade I 90 No. P00085006+06561 | Belgrade | 1998 | Stringer/Multi-beam or Girder | 330 ft | 100 | Fair |
| Storm Castle Road over Gallatin River No. 011106000000011 | Storm Castle Creek | 1935 | Arch - Deck | 148 ft | 99 | Fair |
| Hyalite Road over Hyalite Creek No. 011106000000030 | Hyalite Canyon | 1988 | Stringer/Multi-beam or Girder | 82 ft | 99 | Good |
| Durnam Road over Gallatin River No. 011106000000077 | Durnam Bridge | 1970 | Truss - Thru | 76 ft | 99 | Fair |
| Deer Creek Trlhd. over Gallatin River No. 011106000000078 | Gallatin Canyon | 1970 | Truss - Thru | 75 ft | 99 | Fair |
| Red Cliff Camp RD over Gallatin River No. 011106000000108 | Red Cliff-Gallatin Canyn | 1968 | Stringer/Multi-beam or Girder | 120 ft | 99 | Good |
| Porcupine CR Road over Gallatin River No. 011106000000109 | Gallatin Canyon | 1951 | Stringer/Multi-beam or Girder | 134 ft | 99 | Fair |
| Williams Br RD over Jefferson River 046 No. L16410002+03001 | 5M SW Willow Creek | 1898 | Truss - Thru | 324 ft | 87 | Fair |
| Flathead Pass RD over Flathead Creek No. 000000000007068 | 5M W Sedan | 2017 | Stringer/Multi-beam or Girder | 25 ft | 77 | Good |
| Hatchery Facility over Bridger Creek No. 000061210-40461 | South of Maint. Buildings | 2002 | Truss - Thru | 56 ft | 50 | Good |
| S.Rock Creek Road over Rock Creek No. 011102000000093 | S. of Livingston | 1987 | Stringer/Multi-beam or Girder | 25 ft | 50 | Fair |
| Taylor Fork Road over Wapiti Creek No. 011106000000001 | Taylor Fork | 1954 | Stringer/Multi-beam or Girder | 29 ft | 50 | Poor |
| Spire Rock Cg Loop over Stormcastle Creek No. 011106000000044 | Spire Rock Campground | 1957 | Stringer/Multi-beam or Girder | 33 ft | 50 | Fair |
| Langohr Road over Hyalite Creek No. 011106000000049 | Past Langohr Campground | 1952 | Stringer/Multi-beam or Girder | 41 ft | 50 | Fair |
| Spire Rock Cg Loop over Stormcastle Creek No. 011106000000060 | Spire Rock Campground | 1957 | Stringer/Multi-beam or Girder | 32 ft | 50 | Fair |
| Rat Lake Road over Stormcastle Creek No. 011106000000086 | Just Past Storm Castle Cg | 1954 | Stringer/Multi-beam or Girder | 27 ft | 50 | Fair |
Structure types in Gallatin County
| Stringer/Multi-beam or Girder | 149 | 70.3% |
| Tee Beam | 22 | 10.4% |
| Slab | 18 | 8.5% |
| Culvert | 10 | 4.7% |
| Truss - Thru | 9 | 4.2% |
| Channel Beam | 2 | 0.9% |
| Arch - Deck | 1 | 0.5% |
| Arch - Thru | 1 | 0.5% |
Other counties in Montana
- Beaverhead County 227
- 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
- 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