Silver Bow County, MT

66 public highway bridges

Silver Bow County Bridge Snapshot

Silver Bow County, Montana contains 66 public highway bridges in the FHWA National Bridge Inventory. Roughly 7.6% are rated “Good,” 33.3% “Fair,” 0% “Poor,” and 0% 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.

66

Total Bridges

7.6%

Good

0%

Poor

0%

Structurally Deficient

Condition Distribution

Good

7.6% (5)

Fair

33.3% (22)

Poor

0% (0)

SD

0% (0)

All Bridges (66)

Sort:

I 15

Over: LOCAL RARUS-RR

WEST OF BUTTE, Silver Bow, MT

Built 2019 ADT: 644

I 15

Over: INT MOOSE CREEK

3.1M S DIVIDE, Silver Bow, MT

Built 1976 ADT: 100

I 15

Over: INT MOOSE CREEK

3.1M S DIVIDE, Silver Bow, MT

Built 1976 ADT: 100

I 15

Over: INT DIVIDE-HWY 43

DIVIDE, Silver Bow, MT

Built 1976 ADT: 100

I 15

Over: INT DIVIDE-HWY 43

DIVIDE, Silver Bow, MT

Built 1976 ADT: 564

I 15

Over: TUCKER CREEK ROAD

3.1M N DIVIDE, Silver Bow, MT

Built 1976 ADT: 100

I 15

Over: TUCKER CREEK ROAD

3.1M N DIVIDE, Silver Bow, MT

Built 1976 ADT: 100

I 15

Over: HIGHLAND ROAD

7.4M N DIVIDE, Silver Bow, MT

Built 1976 ADT: 100

I 15

Over: HIGHLAND ROAD

7.4M N DIVIDE, Silver Bow, MT

Built 1976 ADT: 100

I 15

Over: INT BUXTON-BUXTON RD

5.6M S ROCKER, Silver Bow, MT

Built 1976 ADT: 235

I 15

Over: INT BUXTON-BUXTON RD

5.6M S ROCKER, Silver Bow, MT

Built 1976 ADT: 235

I 15

Over: LOCAL-CREEK-RARUS RR

1.2M W ROCKER, Silver Bow, MT

Built 1961 ADT: 37

I 15

Over: LOCAL-CREEK-RARUS RR

1.2M W ROCKER, Silver Bow, MT

Built 1961 ADT: 37

I 15

Over: INT ROCKER

ROCKER, Silver Bow, MT

Built 1968 ADT: 832

I 15

Over: INT ROCKER

ROCKER, Silver Bow, MT

Built 1968 ADT: 832

I 15

Over: INT S MONTANA STREET

BUTTE, Silver Bow, MT

Built 1961 ADT: 14,415

I 15

Over: INT S MONTANA STREET

BUTTE, Silver Bow, MT

Built 1961 ADT: 14,415

I 15

Over: INT HARRISON AVE

BUTTE, Silver Bow, MT

Built 1960 ADT: 18,255

I 15

Over: INT HARRISON AVE

BUTTE, Silver Bow, MT

Built 1960 ADT: 18,255

I 90

Over: SEP LAIRD ST-FRONTAGE RD

3.1M W ROCKER, Silver Bow, MT

Built 1967 ADT: 100

I 90

Over: SEP LAIRD ST-FRONTAGE RD

3.1M W ROCKER, Silver Bow, MT

Built 1967 ADT: 100

I 90

Over: INT NISSLER

1.2M W ROCKER, Silver Bow, MT

Built 1968 ADT: 496

I 90

Over: INT NISSLER

1.2M W ROCKER, Silver Bow, MT

Built 1968 ADT: 496

I 90

Over: INT I-15

BUTTE, Silver Bow, MT

Built 1963 ADT: 91

I 90

Over: INT I 15

BUTTE, Silver Bow, MT

Built 1963 ADT: 91

I 115S

Over: SEP I 15

0.6M W BUTTE, Silver Bow, MT

Built 1964 ADT: 6,807

I 115S

Over: EXCELSIOR AVE

BUTTE, Silver Bow, MT

Built 1955 ADT: 2,717

I 115S

Over: EXCELSIOR AVE

BUTTE, Silver Bow, MT

Built 1955 ADT: 2,717

PALMER ST

Over: INT RAMSEY I 90 013

3M W ROCKER, Silver Bow, MT

Built 1967 ADT: 7,409

BURLINGTON ST

Over: SEP I 90 006

BUTTE-BURLINGTON ST, Silver Bow, MT

Built 1964 ADT: 5,406

DIVIDE CREEK RD

Over: INT FEELY I 15 001

9M NE DIVIDE, Silver Bow, MT

Built 1976 ADT: 2,436

GERMAN GULCH RD

Over: INT VICTOR I 15 003

2M SW ROCKER, Silver Bow, MT

Built 1961 ADT: 3,680

SOAP GULCH RD

Over: SEP SOAP CRK RD I 15 005

3M N MELROSE, Silver Bow, MT

Built 1973 ADT: 2,221

MT HIGHLAND DR

Over: INT CONT DR I 90 011

BUTTE-MT HIGHLAND DR, Silver Bow, MT

Built 1969 ADT: 5,406

LEXINGTON AVE

Over: SEP LEXINGTON ST 016

BUTTE-LEXINGTON AVE, Silver Bow, MT

Built 1960 ADT: 9,590

OREGON AVE

Over: SEP OREGON STREET 017

BUTTE-OREGON AVE, Silver Bow, MT

Built 1960 ADT: 9,590

SHERIDAN AVE

Over: SEP SHERIDAN ST I 15 002

BUTTE-SHERIDAN AVE, Silver Bow, MT

Built 1960 ADT: 6,805

FAIRMONT RD

Over: INT GREGSON-I 90

8M NW ROCKER, Silver Bow, MT

Built 1967 ADT: 7,409

CONTINENTAL DR

Over: SEP I 15

BUTTE-CONTINENTAL DR, Silver Bow, MT

Built 1963 ADT: 6,805

SHIELDS AVE

Over: DRAINAGE

BUTTE-SHIELDS AVE, Silver Bow, MT

Built 1958 ADT: 6,492

PUMPHOUSE RD

Over: BIG HOLE RIVER 009

3M W DIVIDE, Silver Bow, MT

Built 1914 Load: 6.4 t ADT: 100

18131: MAIDEN ROCK

Over: Big Hole River

24 mi SW of Butte, MT, Silver Bow, MT

Built 1951 Load: 21.4 t ADT: 25

N MONTANA ST

Over: WALKING PATH 004

BUTTE-N MONTANA ST, Silver Bow, MT

Built 1962 Load: 21.8 t ADT: 100

CENTENNIAL AVE

Over: RR 015

W SIDE BUTTE, Silver Bow, MT

Built 1955 Load: 24.3 t ADT: 2,189

S 43

Over: DIVIDE CREEK

DIVIDE, Silver Bow, MT

Built 1956 Load: 24.5 t ADT: 673

MILES CROSSING

Over: SILVER BOW CREEK 010

2M W RAMSEY, Silver Bow, MT

Built 2007 Load: 26.3 t ADT: 37

S 41

Over: FISH CREEK

6M N SILVERSTAR, Silver Bow, MT

Built 1934 Load: 27.2 t ADT: 399

TRAPPER CREEK RD

Over: BIG HOLE RIVER 008

W MELROSE, Silver Bow, MT

Built 2001 Load: 29.0 t ADT: 187

S 43

Over: BIG HOLE RIVER

3M W DIVIDE, Silver Bow, MT

Built 1968 Load: 30.8 t ADT: 576

SILVER BOW RD

Over: SILVER BOW CREEK 014

3M W ROCKER, Silver Bow, MT

Built 2006 Load: 32.7 t 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

Reviewed byPlainbridges Editorial, Plain Bridges Editorial Team · June 5, 2026