Beaverhead County, MT

217 public highway bridges

Beaverhead County Bridge Snapshot

Beaverhead County, Montana contains 217 public highway bridges in the FHWA National Bridge Inventory. Roughly 20.7% are rated “Good,” 49.3% “Fair,” 9.2% “Poor,” and 9.2% 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.

217
Total Bridges
20.7%
Good
9.2%
Poor
9.2%
Structurally Deficient

Condition Distribution

Good
20.7% (45)
Fair
49.3% (107)
Poor
9.2% (20)
SD
9.2% (20)

All Bridges (217)

FRONTAGE ROAD 280

Fair

Over: BIG SHEEP CREEK 027

SE OF DELL, Beaverhead, MT

Built 1969 Load: 49.0 t ADT: 100

I 15

Fair

Over: DRAINAGE

13M N DILLON, Beaverhead, MT

Built 1973 Load: 99.9 t ADT: 3,803

NO DATA ENTERED

Good

Over: BIG HOLE RIVER

NO DATA ENTERED, Beaverhead, MT

Built 2022 ADT: 50

NO DATA ENTERED

Good

Over: CANYON CREEK

NO DATA ENTERED, Beaverhead, MT

Built 2023 ADT: 50

1869: DEADWOOD GUL

Good

Over: BIG SHEEP CREEK

6 mi SW of I-15 exit 23, Beaverhead, MT

Built 1991 Load: 10.4 t ADT: 25

I 15

Good

Over: BEAVERHEAD RIVER

0.6M N DILLON, Beaverhead, MT

Built 1973 Load: 17.2 t ADT: 1,996

I 15

Good

Over: BEAVERHEAD RIVER

0.6M N DILLON, Beaverhead, MT

Built 1973 Load: 17.2 t ADT: 1,996

S RAILROAD AVENUE

Good

Over: BLACKTAIL DEER CREEK 130

DILLON-S RAILROAD AVE, Beaverhead, MT

Built 2010 Load: 17.2 t ADT: 100

FDR 2475

Good

Over: WISE RIVER

ADSON CR., Beaverhead, MT

Built 1986 Load: 17.8 t ADT: 50

NO DATA ENTERED

Good

Over: BLOODY D--- CR

BLOODY D--- CR, Beaverhead, MT

Built 1998 Load: 18.5 t ADT: 40

S 43 FH 20

Good

Over: TRAIL CREEK

19M W WISDOM, Beaverhead, MT

Built 1961 Load: 20.0 t ADT: 431

E REEDER STREET

Good

Over: BLACKTAIL DEER CREEK 131

DILLON-E REEDER ST, Beaverhead, MT

Built 2010 Load: 20.4 t ADT: 1,925

I 15

Good

Over: BEAVERHEAD RIVER

5M N CLARK CANYON DAM, Beaverhead, MT

Built 1980 Load: 22.7 t ADT: 2,836

CORINNE TRAIL

Good

Over: HORSE PRAIRE CREEK 042

3M E GRANT, Beaverhead, MT

Built 1951 Load: 23.5 t ADT: 100

HENNABERRY RD

Good

Over: BEAVERHEAD RIVER 125

HENNEBERRY ROAD, Beaverhead, MT

Built 2000 Load: 24.6 t ADT: 100

BIG SHEEP CR RD

Good

Over: BIG SHEEP CREEK 013

10M SW DELL, Beaverhead, MT

Built 2016 Load: 24.6 t ADT: 175

BIG SHEEP CR RD

Good

Over: BIG SHEEP CREEK 014

8.5M SW DELL, Beaverhead, MT

Built 2016 Load: 24.6 t ADT: 175

FDR 7498

Good

Over: BIRCH CREEK

NO DATA ENTERED, Beaverhead, MT

Built 1995 Load: 24.9 t ADT: 15

ARGENTA RD

Good

Over: RATTLESNAKE CREEK 039

11M NW DILLON, Beaverhead, MT

Built 2012 Load: 25.4 t ADT: 93

W PARK ST

Good

Over: BEAVERHEAD RIVER 005

1M W DILLON, Beaverhead, MT

Built 1992 Load: 25.4 t ADT: 100

BIG SHEEP CR RD

Good

Over: BIG SHEEP CREEK 015

3M S DELL, Beaverhead, MT

Built 2016 Load: 25.6 t ADT: 175

NO DATA ENTERED

Good

Over: BENDER CR.

NO DATA ENTERED, Beaverhead, MT

Built 2002 Load: 25.9 t ADT: 10

NO DATA ENTERED

Good

Over: NO DATA ENTERED

NO DATA ENTERED, Beaverhead, MT

Built 2008 Load: 27.2 t ADT: 50

CO RD 002 FH 73

Good

Over: GRASSHOPPER CREEK 016

25M NW DILLON, Beaverhead, MT

Built 1998 Load: 27.2 t ADT: 243

ROCK CREEK ROAD

Good

Over: BIG HOLE RIVER 077

3M SW WISDOM, Beaverhead, MT

Built 2021 Load: 28.8 t ADT: 100

NO DATA ENTERED

Good

Over: NO DATA ENTERED

NO DATA ENTERED, Beaverhead, MT

Built 2009 Load: 28.8 t ADT: 40

I 15

Good

Over: BEAVERHEAD RIVER

8M N CLARK CANYON DAM, Beaverhead, MT

Built 1965 Load: 29.0 t ADT: 2,210

BANNACK BENCH RD

Good

Over: GRASSHOPPER CREEK 009

BANNACK, Beaverhead, MT

Built 2012 Load: 29.9 t ADT: 100

ROAD 325

Good

Over: NO DATA ENTERED

NO DATA ENTERED, Beaverhead, MT

Built 2014 Load: 30.1 t ADT: 50

ROCK CREEK ROAD

Good

Over: BIG HOLE RIVER 077

3M SW WISDOM, Beaverhead, MT

Built 2021 Load: 30.8 t ADT: 100

BRENNER LANE

Good

Over: BLOODY DICK CREEK

12 M W GRANT, Beaverhead, MT

Built 2020 Load: 32.7 t ADT: 100

CO RD 002 FH 73

Good

Over: WISE RIVER 106

7M S WISE RIVER, Beaverhead, MT

Built 1971 Load: 32.7 t ADT: 289

CO RD 002 FH 73

Good

Over: WISE RIVER 105

8M S WISE RIVER, Beaverhead, MT

Built 1971 Load: 32.7 t ADT: 289

CO RD 002 FH 73

Good

Over: WISE RIVER 021

10M S WISE RIVER, Beaverhead, MT

Built 1971 Load: 32.7 t ADT: 289

CO RD O02 FH 73

Good

Over: WISE RIVER 075

12M S WISE RIVER, Beaverhead, MT

Built 1971 Load: 32.7 t ADT: 289

COUNTY ROAD 278

Good

Over: BEAVERHEAD RIVER 124

1.2M S BARRETTS INT, Beaverhead, MT

Built 1988 Load: 32.7 t ADT: 26

BRENNER LANE

Good

Over: TRAIL CREEK

12 M W GRANT, Beaverhead, MT

Built 2020 Load: 33.6 t ADT: 100

FRYING PAN ROAD

Good

Over: WEST SIDE CANAL 126

3M N DILLON, Beaverhead, MT

Built 2011 Load: 33.6 t ADT: 350

MANSFIELD LN

Good

Over: HORSE PRAIRIE CREEK 011

2M NW GRANT, Beaverhead, MT

Built 2007 Load: 34.5 t ADT: 100

FDR #1079

Good

Over: BIG BEAVER CR.

NO DATA ENTERED, Beaverhead, MT

Built 2006 Load: 34.7 t ADT: 12

STEEL CREEK RD

Good

Over: STEEL CREEK 082

1M NE WISDOM, Beaverhead, MT

Built 2012 Load: 35.4 t ADT: 100

SKINNER MEADOWS RD

Good

Over: GOVERNOR CREEK 130

3M SW JACKSON, Beaverhead, MT

Built 2010 Load: 36.3 t ADT: 100

NISSEN LANE

Good

Over: DILLON CANAL 129

3M NE DILLON, Beaverhead, MT

Built 2010 Load: 36.3 t ADT: 100

CARRIGAN LANE

Good

Over: CANYON DITCH 127

8M S DILLON, Beaverhead, MT

Built 2011 Load: 36.3 t ADT: 100

FS RTE 192

Good

Over: ROCK CREEK

ROCK CR, Beaverhead, MT

Built 1986 Load: 38.6 t ADT: 40

MT-43 FH 20

Good

Over: TRAIL CREEK

17 M W WISDOM, Beaverhead, MT

Built 2021 Load: 45.4 t ADT: 431

MT-43 FH 20

Good

Over: TRAIL CREEK

16 M W WISDOM, Beaverhead, MT

Built 2021 Load: 45.4 t ADT: 431

HWY 91 N

Poor

Over: BIG HOLE RIVER 041

22M N DILLON, Beaverhead, MT

Built 1940 Load: 2.7 t ADT: 155

UPPER N FORK RD

Poor

Over: N FK BIGHOLE RIVER 064

6M NW WISDOM, Beaverhead, MT

Built 1977 Load: 4.5 t ADT: 100

BLACKTAIL RD

Poor

Over: EAST BENCH CANAL 006

2M S DILLON, Beaverhead, MT

Built 1962 Load: 4.5 t ADT: 100

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

Related

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