Fallon County, MT

35 public highway bridges

Fallon County Bridge Snapshot

Fallon County, Montana contains 35 public highway bridges in the FHWA National Bridge Inventory. Roughly 40% are rated “Good,” 54.3% “Fair,” 5.7% “Poor,” and 5.7% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in MT are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

35
Total Bridges
40%
Good
5.7%
Poor
5.7%
Structurally Deficient

Condition Distribution

Good
40% (14)
Fair
54.3% (19)
Poor
5.7% (2)
SD
5.7% (2)

All Bridges (35)

US 12

Fair

Over: RR

2M SE BAKER, Fallon, MT

Built 1968 Load: 20.9 t ADT: 671

US 12

Fair

Over: SANDSTONE CREEK

2M W PLEVNA, Fallon, MT

Built 1971 Load: 25.4 t ADT: 495

US 12

Fair

Over: HAY CREEK

9M W PLEVNA, Fallon, MT

Built 1932 Load: 27.2 t ADT: 513

PLEVNA RD S

Fair

Over: SOUTH FORK SANDSTONE CR

1M S PLEVNA, Fallon, MT

Built 1964 Load: 27.2 t ADT: 76

SNAKE TRAIL

Fair

Over: DRAINAGE 054

19M NE BAKER, Fallon, MT

Built 2003 Load: 27.9 t ADT: 100

COUNTY ROAD 054

Fair

Over: SANDSTONE CREEK 034

5M E PLEVNA, Fallon, MT

Built 2005 Load: 28.1 t ADT: 7

MAIN ST S

Fair

Over: SANDSTONE CREEK

SOUTH PLEVNA, Fallon, MT

Built 1964 Load: 29.0 t ADT: 118

US 12

Fair

Over: O`FALLON CREEK

11M W PLEVNA, Fallon, MT

Built 1971 Load: 29.9 t ADT: 513

S 322

Fair

Over: LITTLE BEAVER CREEK

16M S BAKER, Fallon, MT

Built 1992 Load: 31.8 t ADT: 42

S 7-MAIN ST N

Fair

Over: SANDSTONE CREEK

NORTH EDGE BAKER, Fallon, MT

Built 1941 Load: 32.7 t ADT: 2,196

US 12

Fair

Over: TIMBER CREEK

5M W BAKER, Fallon, MT

Built 1998 Load: 35.4 t ADT: 820

COUNTY ROAD 154

Fair

Over: LITTLE BEAVER CREEK 015

8M SW WEBSTER, Fallon, MT

Built 2014 Load: 36.3 t ADT: 100

SUNNY BANK RD

Fair

Over: S FK SANDSTONE CREEK 044

9M SE PLEVNA, Fallon, MT

Built 2013 Load: 37.2 t ADT: 100

CABIN CR RD

Fair

Over: CABIN CREEK 053

24M NW BAKER, Fallon, MT

Built 2012 Load: 37.2 t ADT: 100

US 12

Fair

Over: DRAINAGE

WEST EDGE BAKER, Fallon, MT

Built 1998 Load: 39.0 t ADT: 1,590

COUNTY ROAD 137

Fair

Over: S FK SANDSTONE CREEK 025

1M SW PLEVNA, Fallon, MT

Built 2011 Load: 42.6 t ADT: 100

WESTMORE RD

Fair

Over: SANDSTONE CREEK 024

11M NW PLEVNA, Fallon, MT

Built 2016 Load: 42.6 t ADT: 20

US 12

Fair

Over: SANDSTONE CREEK

EAST EDGE PLEVNA, Fallon, MT

Built 1998 Load: 50.8 t ADT: 749

WILLARD RD W

Fair

Over: O`FALLON CREEK 005

31M SW PLEVNA, Fallon, MT

Built 1995 Load: 99.9 t ADT: 100

ISMAY RD

Good

Over: COTTONWOOD CREEK

3.9M S ISMAY, Fallon, MT

Built 2023 ADT: 38

BONNIEVALE RD

Good

Over: SANDSTONE CREEK

N BAKER, Fallon, MT

Built 2023 ADT: 100

ASH CR RD E

Good

Over: E FORK BEAVER CREEK 055

21M NE BAKER, Fallon, MT

Built 2003 Load: 25.4 t ADT: 100

WESTMORE RD

Good

Over: PENNEL CREEK 022

16M NW PLEVNA, Fallon, MT

Built 1991 Load: 27.2 t ADT: 20

COUNTY ROAD 178

Good

Over: LITTLE BEAVER CREEK 055

12M NE WEBSTER, Fallon, MT

Built 2013 Load: 31.8 t ADT: 100

WEBSTER RD

Good

Over: LITTLE BEAVER CREEK

18M NE EKALAKA, Fallon, MT

Built 1978 Load: 31.8 t ADT: 26

ANTICLINE RD

Good

Over: PENNEL CREEK 013

8M NW BAKER, Fallon, MT

Built 2009 Load: 32.7 t ADT: 30

ASH CR RD E

Good

Over: BEAVER CREEK 031

21M NE BAKER, Fallon, MT

Built 2003 Load: 33.2 t ADT: 100

LAKE ST

Good

Over: BAKER LAKE OVERFLOW

BAKER-LAKE ST, Fallon, MT

Built 2009 Load: 37.2 t ADT: 2,379

PRAIRIE VIEW DR

Good

Over: SANDSTONE CREEK 059

W EDGE BAKER, Fallon, MT

Built 2012 Load: 48.1 t ADT: 100

COUNTY ROAD 141

Good

Over: S FK SANDSTONE CREEK 048

8M SE PLEVNA, Fallon, MT

Built 2012 Load: 49.0 t ADT: 100

DRY FORK RD

Good

Over: PENNEL CREEK 023

9M NW PLEVNA, Fallon, MT

Built 2016 Load: 51.7 t ADT: 100

AG LANE

Good

Over: SANDSTONE CREEK 056

1M W BAKER, Fallon, MT

Built 2014 Load: 54.4 t ADT: 100

PLEVNA RD N

Good

Over: PENNEL CREEK

6 M N PLEVNA, Fallon, MT

Built 2020 Load: 61.7 t ADT: 107

CABIN CREEK LOOP

Poor

Over: CABIN CREEK 057

22M N PLEVNA, Fallon, MT

Built 1980 Load: 99.9 t ADT: 30

WESTMORE ROAD

Structurally Deficient

Over: SANDSTONE CREEK

15 M NW PLEVNA, Fallon, MT

Built 1920 ADT: 100

Read our methodology — how this data is sourced, computed, and verified.

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial