Mineral County, MT

152 public highway bridges

Mineral County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Mineral County, Montana contains 152 public highway bridges. Roughly 18.4% are rated “Good,” 43.4% “Fair,” and 9.2% “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.

152
Total Bridges
18.4%
Good
43.4%
Fair
9.2%
Poor Condition

Condition Distribution

Good
18.4% (28)
Fair
43.4% (66)
Poor
9.2% (14)

All Bridges (152)

NO DATA ENTERED

Fair

Over: FISH CREEK

FISH CR LOLO CR, Mineral, MT

Built 1967 Load: 38.9 t ADT: 40

I 90

Fair

Over: ST. REGIS RVR-INT RAMP

ST. REGIS, Mineral, MT

Built 1983 Load: 39.0 t ADT: 822

300-1

Fair

Over: ST REGIS RIVER

ST REGIS RIVER, Mineral, MT

Built 1955 Load: 39.5 t ADT: 50

I 90

Fair

Over: CLARK FORK RIVER

2.5M W SUPERIOR, Mineral, MT

Built 1976 Load: 39.9 t ADT: 3,615

I 90 EB

Fair

Over: ST. REGIS RIVER

ST. REGIS, Mineral, MT

Built 1983 Load: 41.7 t ADT: 3,513

I 90

Fair

Over: CEDAR CREEK

1.2M E SUPERIOR, Mineral, MT

Built 1966 Load: 41.7 t ADT: 3,776

RD 9117

Fair

Over: TWELVEMILE CREEK

CABIN CITY CG, Mineral, MT

Built 1963 Load: 43.1 t ADT: 50

NO DATA ENTERED

Fair

Over: S FK FISH CREEK

FISH CR LOLO CR, Mineral, MT

Built 1973 Load: 44.1 t ADT: 50

RD 431

Fair

Over: TWOMILE CREEK

TWOMILE CR, Mineral, MT

Built 1959 Load: 45.0 t ADT: 40

RD 386

Fair

Over: ST REGIS RIVER

BIG CR RD 386, Mineral, MT

Built 1972 Load: 58.3 t ADT: 50

NO DATA ENTERED

Good

Over: ST REGIS RIVER

WARD CR, Mineral, MT

Built 1960 Load: 11.0 t ADT: 50

NO DATA ENTERED

Good

Over: ST REGIS RIVER

DEER CR, Mineral, MT

Built 1963 Load: 11.3 t ADT: 50

RD 18720

Good

Over: WARD CREEK

WARD CREEK, Mineral, MT

Built 1972 Load: 16.3 t ADT: 50

NO DATA ENTERED

Good

Over: RANDOLF CREEK

NO DATA ENTERED, Mineral, MT

Built 1991 Load: 17.8 t ADT: 40

UPHAM GULCH RD

Good

Over: CEDAR CREEK 051

4M S SUPERIOR, Mineral, MT

Built 2005 Load: 22.7 t ADT: 313

DIAMOND MATCH RD

Good

Over: CEDAR CREEK

1M SE SUPERIOR, Mineral, MT

Built 1955 Load: 22.7 t ADT: 703

RD 236

Good

Over: DEER CREEK

DEER CREEK, Mineral, MT

Built 1991 Load: 24.0 t ADT: 50

NO DATA ENTERED

Good

Over: DEER CR

FISH CR LOLO CR, Mineral, MT

Built 2004 Load: 25.3 t ADT: 50

NO DATA ENTERED

Good

Over: NO ELK CREEK

NO DATA ENTERED, Mineral, MT

Built 2004 Load: 25.3 t ADT: 40

NO DATA ENTERED

Good

Over: HAIR BALL

NO DATA ENTERED, Mineral, MT

Built 2004 Load: 25.3 t ADT: 40

NO DATA ENTERED

Good

Over: LOWER NO ELK CREEK

NO DATA ENTERED, Mineral, MT

Built 2004 Load: 25.3 t ADT: 40

SOUTHSIDE RD

Good

Over: DRY CREEK 002

5M W SUPERIOR, Mineral, MT

Built 1962 Load: 26.3 t ADT: 293

THOMPSON CR RD

Good

Over: S FK FISH CREEK

THOMPSON CR FISH CR, Mineral, MT

Built 1999 Load: 26.6 t ADT: 50

NO DATA ENTERED

Good

Over: PACKER CREEK

NO DATA ENTERED, Mineral, MT

Built 1980 Load: 26.9 t ADT: 50

NO DATA ENTERED

Good

Over: BIG CREEK

BIG CR, Mineral, MT

Built 1951 Load: 27.5 t ADT: 40

NO DATA ENTERED

Good

Over: FLAT CREEK CREEK

NO DATA ENTERED, Mineral, MT

Built 2004 Load: 27.5 t ADT: 40

RD 889

Good

Over: WARD CR

WARD CR, Mineral, MT

Built 1968 Load: 31.1 t ADT: 50

LITTLE JOE CR RD

Good

Over: ST REGIS RIVER 027

1M W ST REGIS, Mineral, MT

Built 1965 Load: 31.8 t ADT: 57

I 90

Good

Over: CEDAR CREEK

1.2M E SUPERIOR, Mineral, MT

Built 1960 Load: 32.7 t ADT: 3,776

RD 3822

Good

Over: BIG CREEK

W FK BIG CR, Mineral, MT

Built 2019 Load: 33.0 t ADT: 50

I 90

Good

Over: ST. REGIS RIVER

3.1M W ST. REGIS, Mineral, MT

Built 1981 Load: 35.4 t ADT: 3,180

NO DATA ENTERED

Good

Over: VAN NESS CREEK

NO DATA ENTERED, Mineral, MT

Built 2019 Load: 36.6 t ADT: 50

SURVEYOR CREEK

Good

Over: SURVEYOR CREEK

SURVEYOR CREEK, Mineral, MT

Built 2015 Load: 36.9 t ADT: 40

NO DATA ENTERED

Good

Over: SAVENAC CREEK

NO DATA ENTERED, Mineral, MT

Built 2009 Load: 43.1 t ADT: 50

NO DATA ENTERED

Good

Over: SF LITTLE JOE CREEK

NO DATA ENTERED, Mineral, MT

Built 2020 Load: 45.0 t ADT: 50

RIVULET RD

Good

Over: FISH CREEK 058

2M E RIVULET, Mineral, MT

Built 1986 Load: 47.2 t ADT: 349

OLD MILL LOOP

Good

Over: RR 056

ST REGIS, Mineral, MT

Built 1999 Load: 54.4 t ADT: 100

I 90

Good

Over: DRAINAGE

ST. REGIS, Mineral, MT

Built 1986 Load: 99.9 t ADT: 6,360

OLD HWY 10 W

Poor

Over: CLARK FORK 054

3M W ALBERTON, Mineral, MT

Built 1932 Load: 15.4 t ADT: 349

RD 343-2

Poor

Over: S FK FISH CREEK

FISH CR LOLO CR, Mineral, MT

Built 1966 Load: 18.5 t ADT: 50

FISH CR RD

Poor

Over: W FK FISH CREEK

FISH CR LOLO CR, Mineral, MT

Built 1966 Load: 18.5 t ADT: 50

FISH CR RD

Poor

Over: S FK FISH CREEK

FISH CR LOLO CR, Mineral, MT

Built 1965 Load: 18.8 t ADT: 50

OLD HWY 10 E

Poor

Over: ST REGIS RIVER 059

ST REGIS, Mineral, MT

Built 1937 Load: 21.8 t ADT: 119

S FRONTAGE RD W

Poor

Over: CLARK FORK 053

2M W ALBERTON, Mineral, MT

Built 1916 Load: 22.7 t ADT: 171

MULLAN RD E

Poor

Over: NEMOTE CREEK 006

2M NW TARKIO, Mineral, MT

Built 1931 Load: 24.5 t ADT: 100

RD 320

Poor

Over: CEDAR CR

CEDAR CR, Mineral, MT

Built 1959 Load: 24.6 t ADT: 50

I 90

Poor

Over: CLARK FORK RIVER

9.3M W ALBERTON, Mineral, MT

Built 1965 Load: 26.3 t ADT: 4,036

RD 352

Poor

Over: TWELVEMILE CREEK

HENDERSON-THOMPSON, Mineral, MT

Built 1955 Load: 26.9 t ADT: 50

RD 352

Poor

Over: TWELVEMILE CREEK

HENDERSON-THOMPSON, Mineral, MT

Built 1955 Load: 29.2 t ADT: 50

RD 388

Poor

Over: CEDAR CR

SNOWSHOE PASS, Mineral, MT

Built 1954 Load: 30.5 t ADT: 50

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.