Custer County, MT

71 public highway bridges

Custer County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Custer County, Montana contains 71 public highway bridges. Roughly 11.3% are rated “Good,” 70.4% “Fair,” and 1.4% “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.

71
Total Bridges
11.3%
Good
70.4%
Fair
1.4%
Poor Condition

Condition Distribution

Good
11.3% (8)
Fair
70.4% (50)
Poor
1.4% (1)

All Bridges (71)

PACIFIC AVE

Fair

Over: TONGUE RIVER 056

SW EDGE MILES CITY, Custer, MT

Built 2006 Load: 39.0 t ADT: 100

I 94

Fair

Over: COTTONWOOD CREEK

21M NE MILES CITY, Custer, MT

Built 1971 Load: 40.2 t ADT: 2,111

I 94

Fair

Over: COTTONWOOD CREEK

21M NE MILES CITY, Custer, MT

Built 1971 Load: 40.2 t ADT: 2,111

I 94

Fair

Over: TONGUE RIVER

1M S MILES CITY, Custer, MT

Built 1961 Load: 41.7 t ADT: 4,570

POWDERVILLE RD

Fair

Over: PUMPKIN CREEK 002

31M S MILES CITY, Custer, MT

Built 1981 Load: 43.5 t ADT: 47

TRAIL CREEK RD

Fair

Over: MIZPAH CREEK 086

27M SE MILES CITY, Custer, MT

Built 1981 Load: 47.2 t ADT: 56

LOWER RD

Fair

Over: MUSTER CREEK 001

1M SW KINSEY, Custer, MT

Built 1994 Load: 51.7 t ADT: 100

S 59

Fair

Over: PUMPKIN CREEK

14M SE MILES CITY, Custer, MT

Built 1962 Load: 53.5 t ADT: 673

I 94

Fair

Over: LIGNITE CREEK

8M SW MILES CITY, Custer, MT

Built 1964 Load: 89.8 t ADT: 4,646

I 94

Fair

Over: COAL CREEK

7M SW MILES CITY, Custer, MT

Built 1963 Load: 89.8 t ADT: 4,646

S 59

Fair

Over: MILL CREEK-STOCKPASS

7M SE MILES CITY, Custer, MT

Built 1986 Load: 89.8 t ADT: 952

I 94

Fair

Over: JONES CREEK-STOCKPASS

8M NE MILES CITY, Custer, MT

Built 1962 Load: 99.9 t ADT: 4,494

SHEEP CREEK RD

Good

Over: SHEEP CREEK

36M E MILES CITY, Custer, MT

Built 2023 ADT: 22

FRONTAGE ROAD 005

Good

Over: MOON CREEK 093

9M SW MILES CITY, Custer, MT

Built 2013 Load: 18.1 t ADT: 100

WHITNEY CR RD

Good

Over: O`FALLON CREEK

ISMAY-WHITNEY CR RD, Custer, MT

Built 1990 Load: 28.1 t ADT: 38

US 12

Good

Over: BENSLEY CREEK

6M E MILES CITY, Custer, MT

Built 1999 Load: 30.8 t ADT: 643

TRAIL CREEK RD

Good

Over: MASON CREEK 059

49M E MILES CITY, Custer, MT

Built 2016 Load: 36.3 t ADT: 100

TRAIL CREEK RD

Good

Over: STREVELL CREEK 042

25M SE MILES CITY, Custer, MT

Built 2018 Load: 39.9 t ADT: 56

S 59

Good

Over: NORTH WOMAN CREEK

9M SE MILES CITY, Custer, MT

Built 1986 Load: 89.8 t ADT: 952

I 94

Good

Over: VEHICLE PASS

13M NE MILES CITY, Custer, MT

Built 1986 Load: 99.9 t ADT: 4,570

FRONTAGE ROAD 205

Poor

Over: SNELL CREEK 073

17M SW MILES CITY, Custer, MT

Built 1928 Load: 20.9 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

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.