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)

Sort:

I 90

Over: MADISON ROAD

3.1M E THREE FORKS, Gallatin, MT

Built 1963 ADT: 307

I 90

Over: MADISON ROAD

3.1M E THREE FORKS, Gallatin, MT

Built 1963 ADT: 307

I 90

Over: INT LOGAN

LOGAN, Gallatin, MT

Built 1963 ADT: 124

I 90

Over: INT LOGAN

LOGAN, Gallatin, MT

Built 1963 ADT: 124

I 90

Over: MANHATTAN SOUTH RD

0.6M E MANHATTAN, Gallatin, MT

Built 1964 ADT: 100

I 90

Over: MANHATTAN SOUTH RD

0.6M E MANHATTAN, Gallatin, MT

Built 1964 ADT: 100

I 90

Over: SEP HEEB ROAD

2.5M E MANHATTAN, Gallatin, MT

Built 1965 ADT: 102

I 90

Over: SEP HEEB ROAD

2.5M E MANHATTAN, Gallatin, MT

Built 1965 ADT: 102

I 90

Over: SEP THORPE ROAD

5M W BELGRADE, Gallatin, MT

Built 1965 ADT: 923

I 90

Over: SEP THORPE ROAD

5M W BELGRADE, Gallatin, MT

Built 1965 ADT: 923

I 90

Over: INT AIRWAY BLVD

1M E BELGRADE, Gallatin, MT

Built 2014 ADT: 13,002

I 90

Over: INT AIRWAY BLVD

1M E BELGRADE, Gallatin, MT

Built 2014 ADT: 13,002

I 90

Over: SEP VALLEY CENTER SPUR

2.5M W BOZEMAN, Gallatin, MT

Built 1966 ADT: 4,875

I 90

Over: SEP E VALLEY CENTER SPUR

2.5M W BOZEMAN, Gallatin, MT

Built 1966 ADT: 4,875

I 90

Over: SEP N ROUSE AVE-RR

BOZEMAN, Gallatin, MT

Built 2011 ADT: 11,674

I 90

Over: SEP N ROUSE AVE-RR

BOZEMAN, Gallatin, MT

Built 2010 ADT: 9,929

I 90

Over: SEP L STREET

BOZEMAN, Gallatin, MT

Built 1968 ADT: 1,750

I 90

Over: SEP L STREET

BOZEMAN, Gallatin, MT

Built 1968 ADT: 1,750

I 90

Over: INT E BOZEMAN-P 50

BOZEMAN, Gallatin, MT

Built 1971 ADT: 3,821

I 90

Over: INT E BOZEMAN-P 50

BOZEMAN, Gallatin, MT

Built 1971 ADT: 3,821

I 90

Over: SEP FORT ELLIS ROAD

1.2M E BOZEMAN, Gallatin, MT

Built 1971 ADT: 587

I 90

Over: SEP FORT ELLIS ROAD

1.2M E BOZEMAN, Gallatin, MT

Built 1971 ADT: 587

I 90

Over: INT BEAR CANYON

3.7M E BOZEMAN, Gallatin, MT

Built 1962 ADT: 146

I 90

Over: INT BEAR CANYON

3.7M E BOZEMAN, Gallatin, MT

Built 1962 ADT: 146

I 90

Over: INT TRAIL CREEK

7.4M E BOZEMAN, Gallatin, MT

Built 1962 ADT: 700

I 90

Over: INT TRAIL CREEK

7.4M E BOZEMAN, Gallatin, MT

Built 1962 ADT: 700

I 90

Over: INT JACKSON CREEK

9.9M E BOZEMAN, Gallatin, MT

Built 1979 ADT: 100

I 90

Over: INT JACKSON CREEK

9.9M E BOZEMAN, Gallatin, MT

Built 1979 ADT: 100

S 2

Over: E THREE FORKS INT I 90

THREE FORKS, Gallatin, MT

Built 2010 ADT: 9,524

S 85-JACKRABBIT LN

Over: INT BELGRADE I 90

BELGRADE, Gallatin, MT

Built 1998 ADT: 28,680

CHURCHILL RD

Over: INT MANHATTAN-I 90

MANHATTAN, Gallatin, MT

Built 1964 ADT: 19,202

N 19TH AVE

Over: RR-S 205

BOZEMAN-N 19TH AVE, Gallatin, MT

Built 1994 ADT: 6,230

N 19TH AVE

Over: INT N 19TH AVE

BOZEMAN-N 19TH AVE, Gallatin, MT

Built 1994 ADT: 30,201

N SEVENTH AVE

Over: INT N 7TH AVE-I 90

BOZEMAN-N SEVENTH AVE, Gallatin, MT

Built 2014 ADT: 10,307

RIVER RD

Over: LOWLINE CANAL 056

4M N GALLATIN GATEWAY, Gallatin, MT

Built 1933 ADT: 100

OLD TOWN RD

Over: JEFFERSON RIVER 004

2M N THREE FORKS, Gallatin, MT

Built 1897 Load: 4.5 t ADT: 100

N 7TH AVE-FRTG RD

Over: RR - MRL

BOZEMAN-N SEVENTH AVE, Gallatin, MT

Built 1993 Load: 5.4 t ADT: 6,077

DEER CREEK TRLHD.

Over: GALLATIN RIVER

GALLATIN CANYON, Gallatin, MT

Built 1970 Load: 5.8 t ADT: 99

WILLIAMS BR RD

Over: JEFFERSON RIVER 046

5M SW WILLOW CREEK, Gallatin, MT

Built 1898 Load: 6.4 t ADT: 85

DRY CR SCHOOL RD

Over: E GALLATIN RIVER 032

3M E MANHATTAN, Gallatin, MT

Built 1924 Load: 7.3 t ADT: 100

KELLY CANYON RD

Over: BRIDGER CREEK 047

6M NE BOZEMAN, Gallatin, MT

Built 1983 Load: 8.1 t ADT: 100

DURNAM ROAD

Over: GALLATIN RIVER

DURNAM BRIDGE, Gallatin, MT

Built 1970 Load: 10.0 t ADT: 99

STORM CASTLE ROAD

Over: GALLATIN RIVER

STORM CASTLE CREEK, Gallatin, MT

Built 1935 Load: 10.7 t ADT: 99

HAMILTON RD

Over: E GALLATIN RIVER 076

5M E CENTRAL PARK, Gallatin, MT

Built 1928 Load: 10.9 t ADT: 100

MONFORTON SCH RD

Over: HYALITE CREEK 105

4M W BOZEMAN, Gallatin, MT

Built 1992 Load: 11.8 t ADT: 100

HEEB RD

Over: BAKER CREEK 080

5M W BELGRADE, Gallatin, MT

Built 1992 Load: 13.6 t ADT: 102

CAMP CREEK RD

Over: CAMP CREEK 018

S AMSTERDAM, Gallatin, MT

Built 1986 Load: 13.6 t ADT: 100

S 205-FRONTAGE RD

Over: MADISON RIVER

1M E THREE FORKS, Gallatin, MT

Built 1948 Load: 14.3 t ADT: 1,473

BIGGS HAUGLAND RD

Over: DRY CREEK 079

2M S MENARD, Gallatin, MT

Built 1985 Load: 15.4 t ADT: 100

STAGECOACH TRL RD

Over: BAKER CREEK OVERFLOW 081

5M NW BELGRADE, Gallatin, MT

Built 1965 Load: 15.4 t ADT: 100

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

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Compiled by PlainBridges, Independent data publisher

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.