Gallatin County, MT

207 public highway bridges

Gallatin County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Gallatin County, Montana contains 207 public highway bridges. Roughly 16.4% are rated “Good,” 62.8% “Fair,” and 4.3% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

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

207
Total Bridges
16.4%
Good
62.8%
Fair
4.3%
Poor Condition

Condition Distribution

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

All Bridges (207)

AMSTERDAM RD

Fair

Over: GALLATIN RIVER

3M SW BELGRADE, Gallatin, MT

Built 1951 Load: 15.6 t ADT: 2,207

SPAULDING BR RD

Fair

Over: E GALLATIN RIVER 077

4M NE MANHATTAN, Gallatin, MT

Built 1997 Load: 16.3 t ADT: 100

GRAYLING CR RD

Fair

Over: GRAYLING CREEK 111

10M N WEST YELLOWSTONE, Gallatin, MT

Built 1977 Load: 16.3 t ADT: 100

I 90

Fair

Over: JEFFERSON RIVER OVERFLOW

THREE FORKS, Gallatin, MT

Built 1969 Load: 17.2 t ADT: 8,465

SIXTEEN MILE ROAD

Fair

Over: SIXTEEN MILE CREEK 071

2M E MAUDLOW, Gallatin, MT

Built 1954 Load: 17.2 t ADT: 100

PINE BUTTE RD

Fair

Over: HIGHLINE CANAL 116

6M S BELGRADE, Gallatin, MT

Built 1987 Load: 17.2 t ADT: 100

LITTLE BEAR RD

Fair

Over: BIG BEAR CREEK 118

4M S GALLATIN GATEWAY, Gallatin, MT

Built 1987 Load: 17.2 t ADT: 100

PORCUPINE CR ROAD

Fair

Over: GALLATIN RIVER

GALLATIN CANYON, Gallatin, MT

Built 1951 Load: 17.8 t ADT: 99

LANGOHR ROAD

Fair

Over: HYALITE CREEK

PAST LANGOHR CAMPGROUND, Gallatin, MT

Built 1952 Load: 18.5 t ADT: 50

MANHATTAN S RD

Fair

Over: IRRIGATION CANAL 117

1M S MANHATTAN, Gallatin, MT

Built 1956 Load: 19.0 t ADT: 100

COBB HILL RD

Fair

Over: HYALITE CREEK 050

4M W BOZEMAN, Gallatin, MT

Built 1987 Load: 19.1 t ADT: 100

16 MILE CREEK RD

Fair

Over: MID FORK 16-MILE CR 072

4M E MAUDLOW, Gallatin, MT

Built 1996 Load: 20.0 t ADT: 100

PINE BUTTE RD

Fair

Over: HIGHLINE CANAL 114

6M S BELGRADE, Gallatin, MT

Built 1992 Load: 20.0 t ADT: 100

US 191

Fair

Over: GALLATIN RIVER

23M N WEST YELLOWSTONE, Gallatin, MT

Built 1955 Load: 20.0 t ADT: 2,481

US 191 FH 42

Fair

Over: SPANISH CREEK

7M S GALLATIN GATEWAY, Gallatin, MT

Built 1931 Load: 20.8 t ADT: 8,666

MAIDEN ROCK RD

Fair

Over: BRIDGER CREEK 107

2M E BOZEMAN, Gallatin, MT

Built 1922 Load: 20.9 t ADT: 100

MOFFIT GULCH RD

Fair

Over: ROCKY CREEK 044

3M SE BOZEMAN, Gallatin, MT

Built 1976 Load: 20.9 t ADT: 146

US 287

Fair

Over: BEAVER CREEK

24M NW WEST YELLOWSTONE, Gallatin, MT

Built 1964 Load: 20.9 t ADT: 945

KELLY CANYON RD

Fair

Over: ROCKY CREEK 042

2M E BOZEMAN, Gallatin, MT

Built 2001 Load: 21.8 t ADT: 100

LONE MOUNTAIN TRL

Fair

Over: MIDDLE FK W GALLATIN 004

BIG SKY-LONE MOUNTAIN TRL, Gallatin, MT

Built 1979 Load: 21.8 t ADT: 9,549

US 191-HUFFINE LN

Fair

Over: HYALITE CREEK

4M W BOZEMAN, Gallatin, MT

Built 1956 Load: 21.8 t ADT: 25,142

FRONTAGE RD-S 205

Fair

Over: DRAINAGE

2M NW MANHATTAN, Gallatin, MT

Built 1931 Load: 21.8 t ADT: 1,140

DRY CREEK RD

Fair

Over: DRY CREEK

10M N BELGRADE, Gallatin, MT

Built 1929 Load: 21.8 t ADT: 200

STORM CASTLE ROAD

Fair

Over: SQ___ CREEK

CASTLE ROCK CMP-STRM CSTL, Gallatin, MT

Built 1954 Load: 22.0 t ADT: 5

LAW RD

Fair

Over: S COTTONWOOD CREEK 011

1M E GALLATIN GATEWAY, Gallatin, MT

Built 1975 Load: 22.6 t ADT: 100

OLD YELLOWSTONE TR

Fair

Over: WILLOW CREEK

1M S WILLOW CREEK, Gallatin, MT

Built 1949 Load: 22.7 t ADT: 131

W DRY CREEK RD

Fair

Over: EAST GALLATIN RIVER

5M E MANHATTAN, Gallatin, MT

Built 1967 Load: 22.7 t ADT: 810

AMSTERDAM RD

Fair

Over: BAKER CREEK

4M SW BELGRADE, Gallatin, MT

Built 1952 Load: 22.7 t ADT: 2,207

SPIRE ROCK CG LOOP

Fair

Over: STORMCASTLE CREEK

SPIRE ROCK CAMPGROUND, Gallatin, MT

Built 1957 Load: 23.0 t ADT: 50

SPIRE ROCK CG LOOP

Fair

Over: STORMCASTLE CREEK

SPIRE ROCK CAMPGROUND, Gallatin, MT

Built 1957 Load: 23.0 t ADT: 50

I 90

Fair

Over: MADISON RIVER-RR

0.6M E THREE FORKS, Gallatin, MT

Built 1964 Load: 23.6 t ADT: 9,524

US 191 FH 42

Fair

Over: GALLATIN RIVER

4M NE BIG SKY, Gallatin, MT

Built 1952 Load: 23.6 t ADT: 8,666

FRONTAGE RD-S 205

Fair

Over: CAMP CREEK

2M SE MANHATTAN, Gallatin, MT

Built 1920 Load: 23.6 t ADT: 2,232

STORY MILL RD

Fair

Over: BRIDGER CREEK 088

2M N BOZEMAN, Gallatin, MT

Built 1978 Load: 24.4 t ADT: 100

S 84-NORRIS RD

Fair

Over: GALLATIN RIVER

7M W BOZEMAN, Gallatin, MT

Built 1987 Load: 24.5 t ADT: 10,643

FRONTAGE RD-S 205

Fair

Over: BAKER CREEK

2M SE MANHATTAN, Gallatin, MT

Built 1921 Load: 24.5 t ADT: 2,232

W DRY CREEK RD

Fair

Over: GALLATIN RIVER

2M E MANHATTAN, Gallatin, MT

Built 1967 Load: 24.5 t ADT: 1,263

AMSTERDAM RD

Fair

Over: CAMP CREEK 060

AMSTERDAM, Gallatin, MT

Built 1956 Load: 25.4 t ADT: 100

US 191 FH 42

Fair

Over: GALLATIN RIVER

5M S GALLATIN GATEWAY, Gallatin, MT

Built 1958 Load: 25.4 t ADT: 10,163

BLACKWOOD RD

Fair

Over: HYALITE CREEK 052

4M SW BOZEMAN, Gallatin, MT

Built 1971 Load: 26.3 t ADT: 100

US 191

Fair

Over: SPECIMEN CREEK

24M SE BIG SKY, Gallatin, MT

Built 1955 Load: 26.3 t ADT: 2,481

MANLEY RD

Fair

Over: E GALLATIN RIVER 089

2M N BOZEMAN, Gallatin, MT

Built 1996 Load: 27.2 t ADT: 100

LOGAN TRIDENT RD

Fair

Over: GALLATIN RIVER 008

1M W LOGAN, Gallatin, MT

Built 1964 Load: 27.2 t ADT: 1,303

COTTONWOOD CNYN RD

Fair

Over: COTTONWOOD CREEK 041

4M SE GALLATIN GATEWAY, Gallatin, MT

Built 1986 Load: 27.2 t ADT: 100

HEBGEN LAKE ROAD

Fair

Over: WATKINS CREEK

NO DATA ENTERED, Gallatin, MT

Built 2011 Load: 28.5 t ADT: 40

S.ROCK CREEK ROAD

Fair

Over: ROCK CREEK

S. OF LIVINGSTON, Gallatin, MT

Built 1987 Load: 28.5 t ADT: 50

US 191 FH 42

Fair

Over: WEST GALLATIN RIVER

17M SE BIG SKY, Gallatin, MT

Built 1959 Load: 29.0 t ADT: 2,214

S 86-BRIDGER DR

Fair

Over: BRIDGER CREEK

2M NE BOZEMAN, Gallatin, MT

Built 2005 Load: 29.0 t ADT: 8,393

US 287

Fair

Over: RR

11M SW THREE FORKS, Gallatin, MT

Built 1950 Load: 29.9 t ADT: 1,204

FRONTAGE RD-S 205

Fair

Over: RR

LOGAN, Gallatin, MT

Built 2007 Load: 29.9 t ADT: 1,140

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

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Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.