Gallatin County, MT

207 public highway bridges

Gallatin County Bridge Snapshot

Gallatin County, Montana contains 207 public highway bridges in the FHWA National Bridge Inventory. Roughly 16.4% are rated “Good,” 62.8% “Fair,” 4.3% “Poor,” and 4.3% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in MT are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

207
Total Bridges
16.4%
Good
4.3%
Poor
4.3%
Structurally Deficient

Condition Distribution

Good
16.4% (34)
Fair
62.8% (130)
Poor
4.3% (9)
SD
4.3% (9)

All Bridges (207)

FRONTAGE RD-S 205

Fair

Over: GALLATIN RIVER

3M SE MANHATTAN, Gallatin, MT

Built 1949 Load: 39.3 t ADT: 2,981

FRONTAGE RD-S 205

Fair

Over: RR

MANHATTAN, Gallatin, MT

Built 2010 Load: 40.8 t ADT: 2,232

ICE POND RD

Fair

Over: BOZEMAN CREEK 122

BOZEMAN-ICE POND RD, Gallatin, MT

Built 2010 Load: 41.7 t ADT: 100

S 205-FRONTAGE RD

Fair

Over: MID FORK MADISON RIVER

2M E THREE FORKS, Gallatin, MT

Built 1990 Load: 41.7 t ADT: 1,473

I 90

Fair

Over: MADISON RIVER OVERFLOW

2.5M E THREE FORKS, Gallatin, MT

Built 1963 Load: 42.6 t ADT: 9,524

I 90

Fair

Over: GALLATIN RIVER

3.1M E MANHATTAN, Gallatin, MT

Built 1965 Load: 42.6 t ADT: 9,601

I 90

Fair

Over: GALLATIN RIVER

3.1M E MANHATTAN, Gallatin, MT

Built 1965 Load: 42.6 t ADT: 9,601

RAT LAKE ROAD

Fair

Over: STORMCASTLE CREEK

JUST PAST STORM CASTLE CG, Gallatin, MT

Built 1954 Load: 46.7 t ADT: 50

BUTTELMAN RD

Fair

Over: WILLOW CREEK 061

4M S WILLOW CREEK, Gallatin, MT

Built 1923 Load: 47.1 t ADT: 100

LINE CREEK ROAD

Fair

Over: STORMCASTLE CREEK

OFF SQ___ CREEK ROAD, Gallatin, MT

Built 1948 Load: 50.5 t ADT: 50

STORY HILL RD

Fair

Over: ROCKY CREEK

2M E BOZEMAN, Gallatin, MT

Built 2005 Load: 58.6 t ADT: 100

US 191

Fair

Over: GRAYLING CREEK

15M N WEST YELLOWSTONE, Gallatin, MT

Built 1962 Load: 89.8 t ADT: 2,481

US 191

Fair

Over: GRAYLING CREEK

16M N WEST YELLOWSTONE, Gallatin, MT

Built 1962 Load: 89.8 t ADT: 2,481

I 90

Fair

Over: WALKING PATH

BOZEMAN, Gallatin, MT

Built 2011 Load: 99.9 t ADT: 10,307

PORTAL CREEK ROAD

Good

Over: PORTAL CREEK

NO DATA ENTERED, Gallatin, MT

Built 2005 Load: 17.5 t ADT: 50

RED CLIFF CAMP RD

Good

Over: GALLATIN RIVER

RED CLIFF-GALLATIN CANYN, Gallatin, MT

Built 1968 Load: 17.8 t ADT: 99

BREEZE WAY ROAD

Good

Over: WILLOW CREEK 016

2M S WILLOW CREEK, Gallatin, MT

Built 2019 Load: 21.8 t ADT: 985

WILSON CREEK RD

Good

Over: IRRIGATION CANAL

4M S GALLATIN GATEWAY, Gallatin, MT

Built 2019 Load: 25.4 t ADT: 100

MILL CREEK ROAD

Good

Over: ANDERSON CREEK

NO DATA ENTERED, Gallatin, MT

Built 2009 Load: 26.9 t ADT: 40

BOZEMAN TRAIL RD

Good

Over: BEAR CREEK

2M SE BOZEMAN, Gallatin, MT

Built 2019 Load: 27.2 t ADT: 776

BOZEMAN CREEK ROAD

Good

Over: BOZEMAN CREEK

S. OF BOZEMAN, Gallatin, MT

Built 1965 Load: 27.2 t ADT: 40

AIRPORT RD

Good

Over: FERRIS DITCH

2M E BELGRADE, Gallatin, MT

Built 2022 Load: 29.5 t ADT: 3,662

GOLDENSTEIN LN

Good

Over: SOURDOUGH CREEK 053

1M S BOZEMAN, Gallatin, MT

Built 1982 Load: 29.9 t ADT: 100

BAXTER LANE E

Good

Over: HYALITE CREEK

5M W BOZEMAN, Gallatin, MT

Built 2019 Load: 30.8 t ADT: 4,679

GOOCH HILL ROAD

Good

Over: HYALITE CREEK 050

5M S BOZEMAN, Gallatin, MT

Built 2016 Load: 30.8 t ADT: 100

BEATTY RD

Good

Over: SOUTH DRY CREEK

2M SE FOUR CORNERS, Gallatin, MT

Built 2022 Load: 31.8 t ADT: 100

US 191 FH 42

Good

Over: TAYLOR FORK GALLATIN R

16M SE BIG SKY, Gallatin, MT

Built 1959 Load: 31.8 t ADT: 2,214

HAMILTON RD

Good

Over: REESE CREEK

8M NE BELGRADE, Gallatin, MT

Built 2020 Load: 32.7 t ADT: 100

Hatchery Facility

Good

Over: Bridger Creek

South of Maint. Buildings, Gallatin, MT

Built 2002 Load: 32.7 t ADT: 50

I 90

Good

Over: JEFFERSON RIVER

0.6M W THREE FORKS, Gallatin, MT

Built 1968 Load: 32.7 t ADT: 8,465

SWAMP RD

Good

Over: E GALLATIN RIVER 074

6M E MANHATTAN, Gallatin, MT

Built 2008 Load: 32.7 t ADT: 100

HYALITE ROAD

Good

Over: HYALITE CREEK

HYALITE CANYON, Gallatin, MT

Built 1988 Load: 33.0 t ADT: 99

HYALITE RD

Good

Over: EAST FORK HYALITE CREEK

HYALITE DRAINAGE, Gallatin, MT

Built 2013 Load: 35.0 t ADT: 40

DRY CREEK RD

Good

Over: DRY CREEK

13M N BELGRADE, Gallatin, MT

Built 2012 Load: 35.2 t ADT: 200

I 90

Good

Over: CAMP CREEK

1.9M E MANHATTAN, Gallatin, MT

Built 1965 Load: 36.3 t ADT: 9,601

DRY CREEK RD

Good

Over: DRY CREEK 119

9M N BELGRADE, Gallatin, MT

Built 2009 Load: 36.7 t ADT: 260

HYALITE ROAD

Good

Over: EAST FORK HYALITE CREEK

HYALITE DRAINAGE, Gallatin, MT

Built 2014 Load: 36.9 t ADT: 40

MONFORTON SCH RD

Good

Over: HYALITE CREEK 093

4M W BOZEMAN, Gallatin, MT

Built 2014 Load: 39.0 t ADT: 100

STORM CASTLE ROAD

Good

Over: FRENCH CREEK

STORM CASTLE CREEK, Gallatin, MT

Built 2014 Load: 39.9 t ADT: 40

NIXON GULCH ROAD

Good

Over: GALLATIN RIVER

2M NE MANHATTAN, Gallatin, MT

Built 2020 Load: 41.7 t ADT: 100

I 90

Good

Over: JEFFERSON RIVER

0.6M W THREE FORKS, Gallatin, MT

Built 1968 Load: 42.6 t ADT: 8,465

I 90

Good

Over: CAMP CREEK

1.9M E MANHATTAN, Gallatin, MT

Built 1965 Load: 44.5 t ADT: 9,601

I 90

Good

Over: BAKER CREEK

1.9M E MANHATTAN, Gallatin, MT

Built 1965 Load: 46.3 t ADT: 9,601

I 90

Good

Over: BAKER CREEK

1.9M E MANHATTAN, Gallatin, MT

Built 1965 Load: 46.3 t ADT: 9,601

CAMP CREEK RD

Good

Over: CAMP CREEK 017

AMSTERDAM, Gallatin, MT

Built 2002 Load: 49.0 t ADT: 100

AIRPORT RD

Good

Over: E GALLATIN RIVER 097

3M E BELGRADE, Gallatin, MT

Built 2012 Load: 49.2 t ADT: 100

TAYLOR FK. ROAD

Good

Over: TAYLOR FK. CREEK

TAYLOR FORK ROAD, Gallatin, MT

Built 1997 Load: 66.1 t ADT: 40

LONE MOUNTAIN TRL

Good

Over: N FK W GALLATIN RIV 005

4M W BIG SKY, Gallatin, MT

Built 1982 Load: 89.8 t ADT: 2,798

MAIDEN ROCK RD

Poor

Over: BRIDGER CREEK 106

3M E BOZEMAN, Gallatin, MT

Built 1940 Load: 7.3 t ADT: 100

STAGECOACH TRL RD

Poor

Over: BAKER CREEK 082

2M NW BELGRADE, Gallatin, MT

Built 1959 Load: 14.5 t ADT: 100

Read our methodology — how this data is sourced, computed, and verified.

Related

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial