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)

I 94

Unknown

Over: INT P-23 BROADUS

SE EDGE MILES CITY, Custer, MT

Built 2019 ADT: 1,894

I 94

Unknown

Over: INT P-23 BROADUS

SE EDGE MILES CITY, Custer, MT

Built 2020 ADT: 3,788

I 94

Unknown

Over: SEP CEMETERY RD

S EDGE MILES CITY, Custer, MT

Built 1961 ADT: 689

I 94

Unknown

Over: SEP CEMETERY RD

S EDGE MILES CITY, Custer, MT

Built 1974 ADT: 689

I 94

Unknown

Over: INT DIAMOND RING

21M NE MILES CITY, Custer, MT

Built 1971 ADT: 100

I 94

Unknown

Over: INT DIAMOND RING

21M NE MILES CITY, Custer, MT

Built 1971 ADT: 100

VALLEY DR E

Unknown

Over: INT SHIRLEY-I 94 006

10M NE MILES CITY, Custer, MT

Built 1984 ADT: 2,111

FRONTAGE ROAD 005

Unknown

Over: INT RADAR BASE-I 94 004

8M SW MILES CITY, Custer, MT

Built 1961 ADT: 2,323

FRONTAGE ROAD 201

Unknown

Over: INT MOON CREEK-I 94 005

10M SW MILES CITY, Custer, MT

Built 1962 ADT: 2,323

US 94

Unknown

Over: INT W MILES CITY-I 94

3M SW MILES CITY, Custer, MT

Built 1961 ADT: 2,285

US 94

Unknown

Over: TONGUE RIVER

SW EDGE MILES CITY, Custer, MT

Built 2007 ADT: 100

US 94

Unknown

Over: INT BAKER-I 94

2M NE MILES CITY, Custer, MT

Built 1974 ADT: 2,481

CEMETARY RD

Fair

Over: T AND Y CANAL 065

1M S MILES CITY, Custer, MT

Built 1978 Load: 9.1 t ADT: 551

DEADMAN RD

Fair

Over: N FORK SUNDAY CREEK 011

10M NW MILES CITY, Custer, MT

Built 1913 Load: 13.6 t ADT: 100

TRAIL CREEK RD

Fair

Over: POWDER RIVER 061

41M E MILES CITY, Custer, MT

Built 1926 Load: 18.8 t ADT: 100

TUSLER RD

Fair

Over: YELLOWSTONE RIVER 094

9M NE MILES CITY, Custer, MT

Built 1907 Load: 21.8 t ADT: 102

POWDERVILLE RD

Fair

Over: MIZPAH CREEK 020

43M SE MILES CITY, Custer, MT

Built 1931 Load: 22.7 t ADT: 47

S 59

Fair

Over: SOUTH FORK SUNDAY CREEK

3M NW MILES CITY, Custer, MT

Built 1930 Load: 22.7 t ADT: 1,465

S 332

Fair

Over: PUMPKIN CREEK

12M S MILES CITY, Custer, MT

Built 1959 Load: 23.6 t ADT: 198

N LOCATE RD

Fair

Over: LOCATE CREEK 045

3M N LOCATE, Custer, MT

Built 1901 Load: 24.4 t ADT: 23

FRNTAGE ROAD 81020

Fair

Over: COTTONWOOD CREEK 083

19M NE MILES CITY, Custer, MT

Built 1928 Load: 24.5 t ADT: 504

KIRCHER CREEK RD

Fair

Over: T AND Y CANAL 032

4M NE MILES CITY, Custer, MT

Built 1938 Load: 24.5 t ADT: 100

POWDERVILLE RD

Fair

Over: SPRING CREEK 019

51M S MILES CITY, Custer, MT

Built 1912 Load: 24.5 t ADT: 47

MOON CREEK RD

Fair

Over: COTTONWOOD CREEK 044

13M SW MILES CITY, Custer, MT

Built 1928 Load: 25.9 t ADT: 82

S 332

Fair

Over: FOSTER CREEK

31M SW MILES CITY, Custer, MT

Built 1952 Load: 25.9 t ADT: 86

FRNTAGE ROAD 81020

Fair

Over: MILES CREEK 037

20M NE MILES CITY, Custer, MT

Built 1929 Load: 26.3 t ADT: 504

S 59

Fair

Over: YELLOWSTONE RIVER

MILES CITY, Custer, MT

Built 1957 Load: 26.3 t ADT: 3,086

S 59

Fair

Over: NORTH FORK SUNDAY CREEK

10M NW MILES CITY, Custer, MT

Built 1963 Load: 26.3 t ADT: 496

I 94

Fair

Over: DIXON CREEK

14M NE MILES CITY, Custer, MT

Built 1984 Load: 27.2 t ADT: 2,111

I 94

Fair

Over: DIXON CREEK

14M NE MILES CITY, Custer, MT

Built 1984 Load: 27.2 t ADT: 2,111

I 94

Fair

Over: SEP ACCESS RD-DRAINAGE

19M NE MILES CITY, Custer, MT

Built 1971 Load: 27.2 t ADT: 2,111

I 94

Fair

Over: SEP ACCESS RD-DRAINAGE

19M NE MILES CITY, Custer, MT

Built 1971 Load: 27.2 t ADT: 2,111

CROW ROCK RD

Fair

Over: GRIMES CREEK 010

19M NW MILES CITY, Custer, MT

Built 1986 Load: 27.2 t ADT: 100

POWDERVILLE RD

Fair

Over: SAND CREEK 003

42M SE MILES CITY, Custer, MT

Built 1980 Load: 27.2 t ADT: 47

US 94

Fair

Over: RR

2M SW MILES CITY, Custer, MT

Built 1954 Load: 27.2 t ADT: 1,372

US 12

Fair

Over: POWDER RIVER

26M E MILES CITY, Custer, MT

Built 1973 Load: 27.2 t ADT: 549

MOON CREEK RD

Fair

Over: TONGUE RIVER 041

43M SW MILES CITY, Custer, MT

Built 1988 Load: 28.1 t ADT: 36

FRONTAGE ROAD 205

Fair

Over: COTTONWOOD CREEK 072

14M SW MILES CITY, Custer, MT

Built 1929 Load: 28.1 t ADT: 100

S 59

Fair

Over: GRIMES CREEK

17M NW MILES CITY, Custer, MT

Built 1962 Load: 29.0 t ADT: 1,250

I 94

Fair

Over: SEP ACCESS ROAD

23M NE MILES CITY, Custer, MT

Built 1971 Load: 29.9 t ADT: 2,110

I 94

Fair

Over: SEP ACCESS ROAD

23M NE MILES CITY, Custer, MT

Built 1971 Load: 29.9 t ADT: 2,110

COUNTY ROAD 214

Fair

Over: PUMPKIN CREEK 043

6M SW VOLBORG, Custer, MT

Built 1968 Load: 29.9 t ADT: 33

SIGNAL BUTTE RD

Fair

Over: T AND Y CANAL 074

3M SE MILES CITY, Custer, MT

Built 2001 Load: 30.6 t ADT: 100

FRNTAGE ROAD 81020

Fair

Over: MACKS CREEK 038

23M NE MILES CITY, Custer, MT

Built 1929 Load: 30.8 t ADT: 504

POWDER RIVER RD

Fair

Over: ASH CREEK 017

29M SE LOCATE, Custer, MT

Built 1983 Load: 34.5 t ADT: 31

COUNTY ROAD 304

Fair

Over: PENNEL CREEK 036

5M NW ISMAY, Custer, MT

Built 1982 Load: 36.2 t ADT: 18

S 59

Fair

Over: PUMPKIN CREEK

42M SE MILES CITY, Custer, MT

Built 2003 Load: 36.3 t ADT: 673

I 94

Fair

Over: TONGUE RIVER

1M S MILES CITY, Custer, MT

Built 1974 Load: 37.2 t ADT: 2,285

S 489

Fair

Over: SUNDAY CREEK

3M N MILES CITY, Custer, MT

Built 1961 Load: 37.3 t ADT: 762

WYTTENHOVE LN

Fair

Over: BENSLEY CREEK 030

4M NE MILES CITY, Custer, MT

Built 2016 Load: 39.0 t ADT: 355

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.