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)

Sort:

I 90

Over: SEP LOCAL ROAD

1.9M E LOOKOUT PASS, Mineral, MT

Built 1973 ADT: 100

I 90

Over: SEP LOCAL ROAD

5M E LOOKOUT PASS, Mineral, MT

Built 1973 ADT: 100

I 90

Over: INT TAFT

5.6M E LOOKOUT PASS, Mineral, MT

Built 1973 ADT: 100

I 90

Over: SEP RANDOLPH CREEK ROAD

3.7M W SALTESE, Mineral, MT

Built 1973 ADT: 100

I 90

Over: INT SALTESE

SALTESE, Mineral, MT

Built 1973 ADT: 100

I 90

Over: INT HAUGAN

HAUGAN, Mineral, MT

Built 1976 ADT: 100

I 90

Over: INT HAUGAN

HAUGAN, Mineral, MT

Built 1976 ADT: 100

I 90

Over: INT DE BORGIA

DE BORGIA, Mineral, MT

Built 1976 ADT: 100

I 90

Over: INT DE BORGIA

DE BORGIA, Mineral, MT

Built 1976 ADT: 100

I 90

Over: INT HENDERSON

3.1M E DE BORGIA, Mineral, MT

Built 1980 ADT: 147

I 90

Over: INT DREXEL

6.2M E DE BORGIA, Mineral, MT

Built 1980 ADT: 100

I 90 EB

Over: INT DREXEL

6.2M E DE BORGIA, Mineral, MT

Built 1980 ADT: 100

I 90

Over: INT TWO MILE-ST REGIS R

3.7M W ST. REGIS, Mineral, MT

Built 1981 ADT: 100

I 90

Over: INT TWO MILE-ST REGIS R

3.7M W ST. REGIS, Mineral, MT

Built 1981 ADT: 100

I 90

Over: INT ST. REGIS

ST. REGIS, Mineral, MT

Built 1983 ADT: 2,653

I 90

Over: INT ST. REGIS

ST. REGIS, Mineral, MT

Built 1983 ADT: 2,653

I 90

Over: CLARK FORK RVR-RR-LOCAL

0.6M E ST. REGIS, Mineral, MT

Built 1982 ADT: 100

I 90

Over: CLARK FORK RVR-RR-LOCAL

0.6M E ST. REGIS, Mineral, MT

Built 1982 ADT: 100

I 90 EB

Over: SEP RED HILL ROAD

0.6M E ST. REGIS, Mineral, MT

Built 1978 ADT: 100

I 90 WB

Over: SEP RED HILL ROAD

0.6M E ST. REGIS, Mineral, MT

Built 1978 ADT: 100

I 90

Over: INT SLOWAY

3.7M E ST. REGIS, Mineral, MT

Built 1978 ADT: 100

I 90

Over: INT SLOWAY

3.7M E ST. REGIS, Mineral, MT

Built 1978 ADT: 100

I 90 EB

Over: CLARK FORK RVR-LOCAL RD

6.2M E ST. REGIS, Mineral, MT

Built 1982 ADT: 100

I 90 WB

Over: CLARK FORK RVR-LOCAL RD

6.2M E ST. REGIS, Mineral, MT

Built 1984 ADT: 100

I 90 EB

Over: SEP SOUTHSIDE ROAD

6.2M E ST. REGIS, Mineral, MT

Built 1984 ADT: 100

I 90 WB

Over: SEP SOUTHSIDE ROAD

6.2M E ST. REGIS, Mineral, MT

Built 1984 ADT: 100

I 90

Over: INT DRY CREEK

5M W SUPERIOR, Mineral, MT

Built 1983 ADT: 293

I 90

Over: INT DRY CREEK

5M W SUPERIOR, Mineral, MT

Built 1983 ADT: 293

I 90

Over: INT SUPERIOR

SUPERIOR, Mineral, MT

Built 1960 ADT: 3,533

I 90

Over: INT SUPERIOR

SUPERIOR, Mineral, MT

Built 1960 ADT: 3,533

I 90

Over: INT LOZEAU COUNTY ROAD

7.4M E SUPERIOR, Mineral, MT

Built 1967 ADT: 217

I 90

Over: INT LOZEAU COUNTY ROAD

7.4M E SUPERIOR, Mineral, MT

Built 1967 ADT: 217

I 90

Over: INT TARKIO COUNTY ROAD

13.7M W ALBERTON, Mineral, MT

Built 1959 ADT: 100

I 90

Over: INT TARKIO COUNTY ROAD

13.7M W ALBERTON, Mineral, MT

Built 1959 ADT: 100

I 90

Over: SEP ELIZABETH LN

9.9M W ALBERTON, Mineral, MT

Built 1981 ADT: 100

I 90

Over: SEP ELIZABETH LN

9.9M W ALBERTON, Mineral, MT

Built 1965 ADT: 100

I 90

Over: LOCAL-RR

6.2M W ALBERTON, Mineral, MT

Built 1981 ADT: 100

I 90

Over: LOCAL-RR

6.2M W ALBERTON, Mineral, MT

Built 1964 ADT: 100

I 90

Over: INT CYR-CLARK FORK RVR

5M W ALBERTON, Mineral, MT

Built 1981 ADT: 49

I 90

Over: INT CYR-CLARK FORK RVR

5M W ALBERTON, Mineral, MT

Built 1965 ADT: 49

LITTLE JOE CR RD

Over: SEP I 90 005

1M W ST REGIS, Mineral, MT

Built 1983 ADT: 3,180

FISH CREEK RD

Over: INT FISH CREEK-I 90 009

4M E TARKIO, Mineral, MT

Built 1965 ADT: 4,036

LKOUT PSS SKI AREA

Over: INT LKOUT PASS-I 90 004

9M W SALTESE, Mineral, MT

Built 1973 ADT: 3,873

RAILROAD AVE

Over: INT ALBERTON-I 90

ALBERTON-RAILROAD AVE, Mineral, MT

Built 1963 ADT: 4,526

RD 431

Over: ST REGIS RIVER

TWOMILE CR, Mineral, MT

Built 1957 ADT: 50

NO DATA ENTERED

Over: TROUT CREEK

NO DATA ENTERED, Mineral, MT

Built 1950 Load: 7.5 t ADT: 50

LOZEAU CROSSOVR RD

Over: CLARK FORK 045

LOZEAU, Mineral, MT

Built 1944 Load: 15.4 t ADT: 217

I 90

Over: ST. REGIS RVR-LOCAL RD

4.3M E DE BORGIA, Mineral, MT

Built 1979 Load: 16.3 t ADT: 7,352

NO DATA ENTERED

Over: ST REGIS RIVER

NO DATA ENTERED, Mineral, MT

Built 1940 Load: 16.8 t ADT: 50

SOUTHSIDE CROSSING

Over: CLARK FORK 015

N DRY CREEK INT, Mineral, MT

Built 1982 Load: 18.1 t ADT: 293

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

P

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.