Rosebud County, MT

114 public highway bridges

Rosebud County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Rosebud County, Montana contains 114 public highway bridges. Roughly 17.5% are rated “Good,” 59.6% “Fair,” and 5.3% “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.

114
Total Bridges
17.5%
Good
59.6%
Fair
5.3%
Poor Condition

Condition Distribution

Good
17.5% (20)
Fair
59.6% (68)
Poor
5.3% (6)

All Bridges (114)

OLD HWY 10

Fair

Over: SWEENEY CREEK 064

7M E ROSEBUD, Rosebud, MT

Built 1930 Load: 24.5 t ADT: 127

US 12

Fair

Over: DRAINAGE

3M E SUMATRA, Rosebud, MT

Built 1947 Load: 24.5 t ADT: 144

S 566-TONGUE R RD

Fair

Over: HANGING WOMAN CREEK

SW BIRNEY, Rosebud, MT

Built 1975 Load: 24.5 t ADT: 44

US 12

Fair

Over: DRAINAGE

32M NW FORSYTH, Rosebud, MT

Built 1941 Load: 25.4 t ADT: 144

IRR - L44235

Fair

Over: ARMELLS CREEK

22M NW COLSTRIP, Rosebud, MT

Built 1967 Load: 25.4 t ADT: 100

S 447

Fair

Over: ROSEBUD CREEK

7M SW ROSEBUD, Rosebud, MT

Built 1971 Load: 25.4 t ADT: 126

S 447

Fair

Over: ROSEBUD CREEK OVERFLOW

7M SW ROSEBUD, Rosebud, MT

Built 1971 Load: 25.4 t ADT: 126

I 94

Fair

Over: ROSEBUD CREEK

1M W ROSEBUD, Rosebud, MT

Built 1970 Load: 26.3 t ADT: 2,602

FRONTAGE ROAD 020

Fair

Over: RESERVATION CREEK 036

12M W FORSYTH, Rosebud, MT

Built 1928 Load: 26.3 t ADT: 25

OLD HWY 10 E

Fair

Over: ARMELLS CREEK 045

5M W FORSYTH, Rosebud, MT

Built 1932 Load: 26.3 t ADT: 350

IRR - S 39

Fair

Over: EAST FORK ARMELLS CREEK

16M NW COLSTRIP, Rosebud, MT

Built 1983 Load: 26.3 t ADT: 782

I 94

Fair

Over: ROSEBUD CREEK

1M W ROSEBUD, Rosebud, MT

Built 1970 Load: 27.2 t ADT: 2,602

I 94

Fair

Over: GRAVEYARD CREEK

1M E HATHAWAY, Rosebud, MT

Built 1977 Load: 27.2 t ADT: 2,602

ROSEBUD CREEK RD

Fair

Over: ROSEBUD CR OVRFLOW 046

10M SE COLSTRIP, Rosebud, MT

Built 1980 Load: 27.2 t ADT: 38

OLD HWY 10 E

Fair

Over: DRAINAGE 052

3M W FORSYTH, Rosebud, MT

Built 1941 Load: 27.2 t ADT: 350

HAMMOND VALLEY RD

Fair

Over: GREASEWOOD CREEK 033

7M NW FORSYTH, Rosebud, MT

Built 1979 Load: 28.1 t ADT: 65

IRR - S 39

Fair

Over: RR-POWER PLANT ROAD

SOUTH EDGE COLSTRIP, Rosebud, MT

Built 1981 Load: 28.1 t ADT: 1,243

INGOMAR RD

Fair

Over: W FK FROZE TO DEATH 006

5M S INGOMAR, Rosebud, MT

Built 1979 Load: 29.0 t ADT: 100

CARTERSVILLE RD

Fair

Over: LITTLE PORCUPINE CR 027

8M NE FORSYTH, Rosebud, MT

Built 1970 Load: 29.0 t ADT: 100

US 12

Fair

Over: DRAINAGE

35M NW FORSYTH, Rosebud, MT

Built 1941 Load: 29.0 t ADT: 144

US 12

Fair

Over: DRAINAGE

32M NW FORSYTH, Rosebud, MT

Built 1941 Load: 29.0 t ADT: 144

HAMMOND VALLEY RD

Fair

Over: BIG PORCUPINE CR 034

8M NW FORSYTH, Rosebud, MT

Built 1977 Load: 29.9 t ADT: 65

IRR - S 39

Fair

Over: ROSEBUD CREEK

9M SE COLSTRIP, Rosebud, MT

Built 2004 Load: 29.9 t ADT: 713

S 332

Fair

Over: TONGUE RIVER

20M N ASHLAND, Rosebud, MT

Built 1963 Load: 29.9 t ADT: 64

S 566-TONGUE R RD

Fair

Over: CANYON CREEK

11M SW BIRNEY, Rosebud, MT

Built 1990 Load: 29.9 t ADT: 44

LIL PORCUPINE CR R

Fair

Over: LITTLE PORCUPINE CR 014

11M N FORSYTH, Rosebud, MT

Built 1978 Load: 30.8 t ADT: 223

S 59

Fair

Over: DRY HOUSE CREEK

25 M NW MILES CITY, Rosebud, MT

Built 2007 Load: 31.8 t ADT: 1,250

BIG PORCUPINE RD

Fair

Over: BIG PORCUPINE CR 010

5M NE VANANDA, Rosebud, MT

Built 1992 Load: 32.7 t ADT: 100

OLD US 10

Fair

Over: BUTTE CREEK 041

E ROSEBUD, Rosebud, MT

Built 2015 Load: 32.7 t ADT: 127

POWER RD

Fair

Over: RR 076

N EDGE COLSTRIP, Rosebud, MT

Built 1982 Load: 32.7 t ADT: 942

S 332

Fair

Over: DRAINAGE

11M N ASHLAND, Rosebud, MT

Built 1986 Load: 32.7 t ADT: 29

IRR

Fair

Over: TONGUE RIVER

ASHLAND, Rosebud, MT

Built 1970 Load: 32.7 t ADT: 1,083

CARTERSVILLE RD

Fair

Over: SAND CREEK 042

8M NE ROSEBUD, Rosebud, MT

Built 2012 Load: 33.6 t ADT: 138

S 566-TONGUE R RD

Fair

Over: TONGUE RIVER

31M SW ASHLAND, Rosebud, MT

Built 1980 Load: 34.5 t ADT: 44

US 212

Fair

Over: OTTER CREEK

EAST EDGE ASHLAND, Rosebud, MT

Built 2013 Load: 36.3 t ADT: 2,211

OLD HWY 10

Fair

Over: ROSEBUD CREEK

2M W ROSEBUD, Rosebud, MT

Built 2005 Load: 38.1 t ADT: 374

I 94

Fair

Over: GRAVEYARD CREEK

1M E HATHAWAY, Rosebud, MT

Built 1962 Load: 58.1 t ADT: 2,602

IRR - S 39

Fair

Over: SHEEP CREEK

16M NW COLSTRIP, Rosebud, MT

Built 1982 Load: 76.2 t ADT: 782

US 12

Good

Over: BIG PORCUPINE CREEK

13M NW FORSYTH, Rosebud, MT

Built 2004 Load: 20.0 t ADT: 226

BIG PORCUPINE RD

Good

Over: BIG PORCUPINE CREEK 011

8M N VANANDA, Rosebud, MT

Built 2006 Load: 21.4 t ADT: 12

US HWY 12

Good

Over: MUSSELSHELL RIVER

2M NE MELSTONE, Rosebud, MT

Built 2019 Load: 21.8 t ADT: 240

I 94

Good

Over: ARMELLS CR-RR

6M W FORSYTH, Rosebud, MT

Built 1967 Load: 22.7 t ADT: 2,138

ACORN FLATS RD

Good

Over: BIG PORCUPINE CR 005

13M NE INGOMAR, Rosebud, MT

Built 2007 Load: 25.4 t ADT: 100

US 12

Good

Over: EAST SPRING COULEE

11M NW FORSYTH, Rosebud, MT

Built 2012 Load: 26.3 t ADT: 226

US 12

Good

Over: DRAINAGE

9M NW FORSYTH, Rosebud, MT

Built 2012 Load: 26.3 t ADT: 226

US 12

Good

Over: DRAINAGE

8M NW FORSYTH, Rosebud, MT

Built 2012 Load: 28.1 t ADT: 226

US 12

Good

Over: DRAINAGE

8M NW FORSYTH, Rosebud, MT

Built 2012 Load: 29.9 t ADT: 226

PETROLEUM RD

Good

Over: BIG PORCUPINE CR

14M E INGOMAR, Rosebud, MT

Built 2022 Load: 31.8 t ADT: 100

US 12

Good

Over: GREASEWOOD CREEK

7M NW FORSYTH, Rosebud, MT

Built 2012 Load: 31.8 t ADT: 226

IRR BIA RTE 4

Good

Over: BIRNEY CREEK

2.9 KM NW OF BIRNEY, Rosebud, MT

Built 2007 Load: 32.7 t ADT: 250

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.