Teton County, MT

81 public highway bridges

Teton County Bridge Snapshot

Teton County, Montana contains 81 public highway bridges in the FHWA National Bridge Inventory. Roughly 37% are rated “Good,” 51.9% “Fair,” 2.5% “Poor,” and 2.5% 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.

81

Total Bridges

37%

Good

2.5%

Poor

2.5%

Structurally Deficient

Condition Distribution

Good

37% (30)

Fair

51.9% (42)

Poor

2.5% (2)

SD

2.5% (2)

All Bridges (81)

Sort:

I 15

Over: SEP 9TH RD NE

3M N POWER, Teton, MT

Built 1972 ADT: 100

I 15

Over: SEP 9TH RD NE

3M N POWER, Teton, MT

Built 1972 ADT: 100

I 15

Over: INT MAIN ST

DUTTON, Teton, MT

Built 1976 ADT: 828

I 15

Over: INT MAIN ST

DUTTON, Teton, MT

Built 1976 ADT: 828

20TH RD NE

Over: SEP I 15 001

4M N DUTTON, Teton, MT

Built 1977 ADT: 1,681

24TH RD NE

Over: INT COLLINS RD I 15 003

6M SE BRADY, Teton, MT

Built 1977 ADT: 1,704

S 431

Over: INT POWER I 15

POWER, Teton, MT

Built 1972 ADT: 1,505

2ND LN SE

Over: GREENFIELD CANAL 052

2M SE FAIRFIELD, Teton, MT

Built 1966 Load: 11.8 t ADT: 14

NFSR 8982

Over: N FK TETON RIVER

7 LAZY P, Teton, MT

Built 1967 Load: 12.0 t ADT: 50

SHERMAN RD

Over: TETON RIVER 060

1M W CHOTEAU, Teton, MT

Built 1938 Load: 14.5 t ADT: 100

NFSR #144

Over: NORTH FORK TETON RIVER

31 MI WESTERLY OF CHOTEAU, Teton, MT

Built 1965 Load: 16.2 t ADT: 65

BELLVIEW RD

Over: NORTH FORK WILLOW CR 066

16M W CHOTEAU, Teton, MT

Built 1986 Load: 16.3 t ADT: 100

7TH LN NE

Over: DRAINAGE 128

12M NW POWER, Teton, MT

Built 1978 Load: 17.2 t ADT: 27

1ST LN SE

Over: GREENFIELD CANAL 055

1M SE FAIRFIELD, Teton, MT

Built 1994 Load: 18.1 t ADT: 100

COUNTY LINE RD

Over: IRRIGATION CANAL 031

3M SE FAIRFIELD, Teton, MT

Built 1949 Load: 18.1 t ADT: 100

AIRPORT RD

Over: SPRING CREEK 111

NW EDGE CHOTEAU, Teton, MT

Built 1960 Load: 19.1 t ADT: 437

SO. FK. TETON RD.

Over: TETON RIVER

25 MI. NW OF CHOTEAU, MT., Teton, MT

Built 1944 Load: 21.1 t ADT: 16

US 89

Over: TETON RIVER

1M S CHOTEAU, Teton, MT

Built 1939 Load: 21.8 t ADT: 1,257

US 287

Over: DRY WASH

6M S CHOTEAU, Teton, MT

Built 1936 Load: 22.7 t ADT: 446

9TH LN NW

Over: SPRING VALLEY CANAL 047

13M NW FAIRFIELD, Teton, MT

Built 1975 Load: 23.6 t ADT: 100

4TH LN NE

Over: GREENFIELD CANAL 044

5M NE FAIRFIELD, Teton, MT

Built 1982 Load: 23.6 t ADT: 100

S 565

Over: GREENFIELD SOUTH CANAL

7M N SIMMS, Teton, MT

Built 1969 Load: 23.6 t ADT: 449

1ST RD SW

Over: SPRING VALLEY CANAL 046

15M NW FAIRFIELD, Teton, MT

Built 1986 Load: 24.5 t ADT: 100

I 15

Over: TETON RIVER

6M N DUTTON, Teton, MT

Built 1977 Load: 25.4 t ADT: 1,681

US 287

Over: TETON RIVER

1M S CHOTEAU, Teton, MT

Built 1978 Load: 26.3 t ADT: 529

S 221

Over: TETON RIVER

5M E CHOTEAU, Teton, MT

Built 1939 Load: 26.3 t ADT: 182

BLACKLEAF RD

Over: MUDDY CREEK 032

4M NW BYNUM, Teton, MT

Built 1982 Load: 27.2 t ADT: 52

3RD LN NW

Over: MUDDY CREEK 018

10M NE FARMINGTON, Teton, MT

Built 1938 Load: 27.2 t ADT: 100

13TH LN NE

Over: TETON RIVER 099

5M N DUTTON, Teton, MT

Built 1965 Load: 28.1 t ADT: 100

FOSTER RD

Over: TETON RIVER 068

1M NW CHOTEAU, Teton, MT

Built 1976 Load: 29.0 t ADT: 100

5TH LN NE

Over: MUDDY CREEK 016

5M NW COLLINS, Teton, MT

Built 1980 Load: 29.9 t ADT: 100

US 287

Over: DEEP CREEK

3M S CHOTEAU, Teton, MT

Built 1965 Load: 30.8 t ADT: 529

ROUTE 108

Over: SUN RIVER

SUN RIVER, Teton, MT

Built 1967 Load: 32.4 t ADT: 113

5TH LN NE

Over: GREENFIELD CANAL 043

7M NE FAIRFIELD, Teton, MT

Built 1988 Load: 32.7 t ADT: 100

PEEBLES RD

Over: TETON RIVER 064

10M NW CHOTEAU, Teton, MT

Built 1973 Load: 32.7 t ADT: 100

S 408

Over: USRS MAIN CANAL

4M SW FAIRFIELD, Teton, MT

Built 1953 Load: 32.7 t ADT: 349

BELLVIEW RD

Over: TETON RIVER 061

2M SW CHOTEAU, Teton, MT

Built 1970 Load: 33.5 t ADT: 100

PISHKUN RD

Over: WILLOW CREEK 070

9M SW CHOTEAU, Teton, MT

Built 1970 Load: 33.5 t ADT: 100

20TH RD NW

Over: SPRING COULEE 017

6M NE FARMINGTON, Teton, MT

Built 1975 Load: 33.5 t ADT: 87

S DIVISION LN

Over: BIG COULEE 059

4M S FAIRFIELD, Teton, MT

Built 1976 Load: 33.6 t ADT: 100

PENDROY RD

Over: FARMER`S COULEE

1M E PENDROY, Teton, MT

Built 1949 Load: 34.5 t ADT: 168

15TH LN NW

Over: TETON CANAL 030

4M N BYNUM, Teton, MT

Built 1984 Load: 36.3 t ADT: 100

9TH RD NE

Over: DRAINAGE 057

2M N CORDOVA, Teton, MT

Built 1988 Load: 37.2 t ADT: 100

S 431

Over: GREENFIELD MAIN CANAL

3M E FAIRFIELD, Teton, MT

Built 1959 Load: 37.2 t ADT: 283

S 431

Over: GREENFIELD MAIN CANAL

8M NE FAIRFIELD, Teton, MT

Built 1959 Load: 38.1 t ADT: 283

S 408

Over: USRS LAT DITCH

1M W FAIRFIELD, Teton, MT

Built 1953 Load: 39.0 t ADT: 392

6TH LN NE

Over: GREENFIELD CANAL 042

N GREENFIELD, Teton, MT

Built 1969 Load: 40.8 t ADT: 100

20TH LN NE

Over: TETON RIVER 051

14M NE DUTTON, Teton, MT

Built 1930 Load: 43.5 t ADT: 100

8TH LN NE

Over: MUDDY CREEK 015

N COLLINS, Teton, MT

Built 1987 Load: 75.3 t ADT: 87

10TH LN NW

Over: FOSTER CREEK 026

11M N CHOTEAU, Teton, MT

Built 1984 Load: 4.5 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