Yellowstone County, MT

283 public highway bridges

Yellowstone County Bridge Snapshot

Yellowstone County, Montana contains 283 public highway bridges in the FHWA National Bridge Inventory. Roughly 28.3% are rated “Good,” 46.3% “Fair,” 1.1% “Poor,” and 1.1% 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.

283

Total Bridges

28.3%

Good

1.1%

Poor

1.1%

Structurally Deficient

Condition Distribution

Good

28.3% (80)

Fair

46.3% (131)

Poor

1.1% (3)

SD

1.1% (3)

All Bridges (283)

Sort:

CUSTER FRTG RD

Over: MILL CREEK 018

4M E POMPEY`S PILLAR, Yellowstone, MT

Built 1940 Load: 22.7 t ADT: 146

CUSTER FRTG RD

Over: BULL MOUNTAIN CREEK 019

5M NE POMPEY`S PILLAR, Yellowstone, MT

Built 1940 Load: 22.7 t ADT: 146

US 212

Over: RR

2M NE LAUREL, Yellowstone, MT

Built 1936 Load: 22.7 t ADT: 5,491

MUSSELSHELL TRL RD

Over: YELLOWSTONE RIVER

1M N CUSTER, Yellowstone, MT

Built 1964 Load: 22.7 t ADT: 216

HWY 312

Over: RR

1M W POMPEY`S PILLAR, Yellowstone, MT

Built 2004 Load: 22.7 t ADT: 399

HESPER RD

Over: BBWA CANAL 117

3M SW BILLINGS, Yellowstone, MT

Built 1938 Load: 23.5 t ADT: 4,877

I 94

Over: HUNTLEY CANAL

2.5M W POMPEYS PILLAR, Yellowstone, MT

Built 1968 Load: 23.6 t ADT: 2,577

FLY CREEK RD

Over: FLY CREEK 139

4M SW POMPAY`S PILLAR, Yellowstone, MT

Built 1960 Load: 23.6 t ADT: 100

DUCK CREEK RD

Over: DUCK CREEK 022

SW BILLINGS, Yellowstone, MT

Built 1967 Load: 23.6 t ADT: 100

US 87

Over: YELLOWSTONE RIVER

BILLINGS-DICK JOHNSTON BR, Yellowstone, MT

Built 1993 Load: 23.6 t ADT: 23,275

HOMER DAVIS RD

Over: TWELVE MILE CREEK 041

4M SW SHEPHERD, Yellowstone, MT

Built 1999 Load: 23.7 t ADT: 100

443 RAMP-I 90

Over: SHILOH INTERCHANGE

BILLINGS, Yellowstone, MT

Built 2001 Load: 24.5 t ADT: 5,463

HESPER RD

Over: CANYON CREEK 114

7M NE LAUREL, Yellowstone, MT

Built 1972 Load: 24.5 t ADT: 519

21 MILE RD

Over: N FK CROOKED CREEK 079

20M N BILLINGS, Yellowstone, MT

Built 1965 Load: 24.5 t ADT: 68

CUSTER FRTG RD

Over: ROUGH COULEE 033

6M NE POMPEY`S PILLAR, Yellowstone, MT

Built 1940 Load: 24.5 t ADT: 146

CUSTER FRTG RD

Over: SPRING CREEK 035

8M NE POMPEY`S PILLAR, Yellowstone, MT

Built 1940 Load: 24.5 t ADT: 146

RAZOR CREEK RD

Over: RAZOR CREEK 164

3M N SHEPHERD, Yellowstone, MT

Built 1977 Load: 24.5 t ADT: 100

BUFFALO CREEK RD

Over: BUFFALO CREEK 132

5M NW CUSTER, Yellowstone, MT

Built 2012 Load: 24.5 t ADT: 100

KING AVE W

Over: CANYON CREEK

5M W BILLINGS, Yellowstone, MT

Built 1966 Load: 24.5 t ADT: 780

S SHILOH RD

Over: CANYON CREEK

2M SW BILLINGS, Yellowstone, MT

Built 1959 Load: 25.4 t ADT: 3,878

I 94

Over: PRYOR CREEK

0.6M E HUNTLEY, Yellowstone, MT

Built 1967 Load: 26.3 t ADT: 3,006

I 94

Over: PRYOR CREEK

0.6M E HUNTLEY, Yellowstone, MT

Built 1967 Load: 26.3 t ADT: 3,006

HOGAN RD

Over: PRYOR CREEK 007

7M S HUNTLEY, Yellowstone, MT

Built 1979 Load: 26.3 t ADT: 100

S 12TH RD

Over: HUNTLEY MAIN CANAL 156

6M NE HUNTLEY, Yellowstone, MT

Built 1976 Load: 26.3 t ADT: 5

ALLENDALE RD

Over: BBWA CANAL 027

3M E LAUREL, Yellowstone, MT

Built 2001 Load: 26.3 t ADT: 100

OLD US 87

Over: E FORK PRYOR CREEK 174

9M SE BILLINGS, Yellowstone, MT

Built 1926 Load: 26.3 t ADT: 561

BERNHARDT RD

Over: DRAINAGE DITCH 191

LAUREL-BERNHARDT RD, Yellowstone, MT

Built 1980 Load: 26.3 t ADT: 121

S 522 (36-30)

Over: HUNTLEY CANAL

1M S HUNTLEY, Yellowstone, MT

Built 1967 Load: 26.3 t ADT: 4,306

S 56TH ST W

Over: CANYON CREEK DITCH 075

W BILLINGS-S 56TH ST W, Yellowstone, MT

Built 1925 Load: 27.2 t ADT: 2,281

W M RD

Over: ARROW CREEK 099

3M NE WORDEN, Yellowstone, MT

Built 1975 Load: 28.1 t ADT: 216

ALKALI CREEK RD

Over: ALKALI CREEK 034

2M NW BILLINGS, Yellowstone, MT

Built 1989 Load: 28.1 t ADT: 989

OLD HWY 312

Over: CUSTER COULEE 171

2M E HUNTLEY, Yellowstone, MT

Built 1928 Load: 28.1 t ADT: 2,758

GOLF COURSE RD

Over: BIG DITCH 029

2M W LAUREL, Yellowstone, MT

Built 1968 Load: 28.1 t ADT: 1,267

US 87

Over: RR

BILLINGS, Yellowstone, MT

Built 1993 Load: 28.1 t ADT: 23,275

S FRONTAGE RD

Over: CANYON CREEK

W BILLINGS, Yellowstone, MT

Built 1959 Load: 28.1 t ADT: 4,386

I 90

Over: CANYON CREEK

3.1M W BILLINGS, Yellowstone, MT

Built 1959 Load: 29.0 t ADT: 14,099

I 90

Over: CANYON CREEK

3.1M W BILLINGS, Yellowstone, MT

Built 1959 Load: 29.0 t ADT: 14,099

ROBINDALE DR

Over: BLUE CREEK 123

4M SE BILLINGS, Yellowstone, MT

Built 2013 Load: 29.0 t ADT: 100

POLY DR

Over: BBWA CANAL 040

BILLINGS-POLY DR, Yellowstone, MT

Built 1971 Load: 29.8 t ADT: 6,084

CENTRAL AVE

Over: BBWA CANAL

BILLINGS-CENTRAL AVE, Yellowstone, MT

Built 1978 Load: 29.8 t ADT: 18,183

I 94

Over: HUNTLEY CANAL

2.5M W POMPEYS PILLAR, Yellowstone, MT

Built 1968 Load: 29.9 t ADT: 2,577

HIGHLINE CANAL RD

Over: HUNTLEY MAIN CANAL 152

1M NE BALLANTINE, Yellowstone, MT

Built 1982 Load: 29.9 t ADT: 65

KING AVE W

Over: BBWA CANAL

BILLINGS-KING AVE W, Yellowstone, MT

Built 1994 Load: 29.9 t ADT: 31,207

I 90

Over: PRYOR CREEK

9.3M E BILLINGS, Yellowstone, MT

Built 1969 Load: 30.8 t ADT: 4,191

I 90

Over: PRYOR CREEK

9.3M E BILLINGS, Yellowstone, MT

Built 1969 Load: 30.8 t ADT: 4,191

I 94

Over: FLY CREEK

2.5M E POMPEYS PILLAR, Yellowstone, MT

Built 1976 Load: 30.8 t ADT: 2,385

I 94

Over: FLY CREEK

2.5M E POMPEYS PILLAR, Yellowstone, MT

Built 1976 Load: 30.8 t ADT: 2,385

DUCK CREEK RD

Over: YELLOWSTONE RIVER 020

SW BILLINGS, Yellowstone, MT

Built 1991 Load: 30.8 t ADT: 100

OLD HWY 312

Over: SEVEN MILE CREEK 168

5M SW HUNTLEY, Yellowstone, MT

Built 1947 Load: 30.8 t ADT: 7,499

S FRONTAGE RD

Over: HOGAN`S SLOUGH

BILLINGS-S FRONTAGE RD, Yellowstone, MT

Built 1958 Load: 31.7 t ADT: 2,335

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 6, 2026