Sanders County, MT

116 public highway bridges

Sanders County Bridge Snapshot

Sanders County, Montana contains 116 public highway bridges in the FHWA National Bridge Inventory. Roughly 37.9% are rated “Good,” 54.3% “Fair,” 7.8% “Poor,” and 7.8% 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.

116
Total Bridges
37.9%
Good
7.8%
Poor
7.8%
Structurally Deficient

Condition Distribution

Good
37.9% (44)
Fair
54.3% (63)
Poor
7.8% (9)
SD
7.8% (9)

All Bridges (116)

S 471 FH 7

Fair

Over: COOPER CREEK

16M W THOMPSON FALLS, Sanders, MT

Built 1979 Load: 32.7 t ADT: 82

S 471 FH 7

Fair

Over: PROSPECT CREEK

18M W THOMPSON FALLS, Sanders, MT

Built 1979 Load: 32.7 t ADT: 82

NO DATA ENTERED

Fair

Over: EAST FK BULL RIVER

LOST GIRL NO 2, Sanders, MT

Built 1963 Load: 33.4 t ADT: 20

RD 7569

Fair

Over: FISHTRAP CR

RADIO MANTRAP, Sanders, MT

Built 1963 Load: 33.4 t ADT: 50

5TH AVE S

Fair

Over: CLARK FORK 085

1M SW PLAINS, Sanders, MT

Built 1975 Load: 33.6 t ADT: 100

NO DATA ENTERED

Fair

Over: EAST FK BULL RIVER

NO DATA ENTERED, Sanders, MT

Built 1963 Load: 35.0 t ADT: 30

FAR WEST RD

Fair

Over: LITTLE BITTERROOT 060

13M N CAMAS, Sanders, MT

Built 1991 Load: 37.1 t ADT: 100

IRR - S 200

Fair

Over: SEEPAY CREEK

2M SW PERMA, Sanders, MT

Built 1969 Load: 37.2 t ADT: 2,127

S 135

Fair

Over: CLARK FORK RIVER

11M SW PARADISE, Sanders, MT

Built 1962 Load: 38.1 t ADT: 1,985

IRR BIA ROUTE 166

Fair

Over: REVAIS CREEK

4.0K SOUTH OF HWY 200, Sanders, MT

Built 2014 Load: 46.3 t ADT: 30

NO DATA ENTERED

Fair

Over: N BRANCH MARTEN CREEK

MARTEN CREEK, Sanders, MT

Built 1967 Load: 49.9 t ADT: 20

ELK CREEK RD

Fair

Over: ELK CREEK 051

4M S HERON, Sanders, MT

Built 1988 Load: 56.2 t ADT: 100

IRR BIA RTE 127

Fair

Over: MILL POCKET-CAMAS CANAL

6.3KM NW OF NIARADA, Sanders, MT

Built 2004 Load: 65.3 t ADT: 10

ACM RD

Good

Over: THOMPSON RIVER

ACM RD, Sanders, MT

Built 1996 ADT: 50

NO DATA ENTERED

Good

Over: BIG BEAVER

NO DATA ENTERED, Sanders, MT

Built 1976 Load: 15.6 t ADT: 20

RD 7611

Good

Over: CLEAR CR

DIRTY-CLEAR RD, Sanders, MT

Built 1991 Load: 18.1 t ADT: 50

NO DATA ENTERED

Good

Over: PROSPECT CREEK

COX GULCH, Sanders, MT

Built 1974 Load: 18.1 t ADT: 50

IRR - S 200

Good

Over: REVAIS CREEK

3M W DIXON, Sanders, MT

Built 1989 Load: 22.7 t ADT: 1,943

RACE HORSE GULCH R

Good

Over: CAMAS CREEK 016

E PERMA, Sanders, MT

Built 1992 Load: 23.8 t ADT: 100

NO DATA ENTERED

Good

Over: NO DATA ENTERED

NO DATA ENTERED, Sanders, MT

Built 2005 Load: 24.9 t ADT: 40

NO DATA ENTERED

Good

Over: WEST FORK DRY CREEK

W FK DRY CR, Sanders, MT

Built 1992 Load: 25.9 t ADT: 40

UPPER RESERVOIR RD

Good

Over: IRRIGATION CANAL 069

4M N LONEPINE, Sanders, MT

Built 1991 Load: 27.2 t ADT: 100

NO DATA ENTERED

Good

Over: COOPER CREEK

NO DATA ENTERED, Sanders, MT

Built 2000 Load: 27.9 t ADT: 40

NO DATA ENTERED

Good

Over: ROCK CR

NO DATA ENTERED, Sanders, MT

Built 1959 Load: 28.2 t ADT: 50

S 556-THOMPSON R R

Good

Over: BIG ROCK CREEK

35M SW MARION, Sanders, MT

Built 2009 Load: 28.8 t ADT: 55

IRR - S 200

Good

Over: MAGPIE CREEK

5M SE PERMA, Sanders, MT

Built 1986 Load: 29.0 t ADT: 1,943

EKBLAD ROAD

Good

Over: HOT SPRINGS CREEK 101

NE HOT SPRINGS, Sanders, MT

Built 2010 Load: 29.8 t ADT: 100

GREEN MOUNTAIN RD

Good

Over: SWAMP CREEK 030

5M N TROUT CREEK, Sanders, MT

Built 1986 Load: 29.9 t ADT: 100

BIG GULCH RD

Good

Over: LITTLE BITTERROOT RIV018

9 M SE HOT SPRINGS, Sanders, MT

Built 2014 Load: 29.9 t ADT: 100

REVAIS CREEK ROAD

Good

Over: REVAIS CREEK 102

2.7M S MT 200, Sanders, MT

Built 2012 Load: 30.1 t ADT: 100

NO DATA ENTERED

Good

Over: NO DATA ENTERED

NO DATA ENTERED, Sanders, MT

Built 2010 Load: 30.5 t ADT: 50

NO DATA ENTERED

Good

Over: FISHTRAP CREEK

NO DATA ENTERED, Sanders, MT

Built 2009 Load: 30.8 t ADT: 40

VERMILION RIV RD

Good

Over: LYONS CREEK 032

7M E TROUT CREEK, Sanders, MT

Built 1900 Load: 30.8 t ADT: 100

IRR - S 212

Good

Over: JOCKO RIVER

1M E DIXON, Sanders, MT

Built 1949 Load: 30.8 t ADT: 917

RD 7618

Good

Over: WILKES CREEK

WILKES CREEK, Sanders, MT

Built 1973 Load: 31.1 t ADT: 50

STONY CREEK

Good

Over: STONY LAKE CREEK

STONY CREEK, Sanders, MT

Built 2015 Load: 31.8 t ADT: 50

ELK CREEK RD

Good

Over: ELK CREEK 050

4M S HERON, Sanders, MT

Built 2001 Load: 32.7 t ADT: 100

LOWER RIVER RD

Good

Over: ELK CREEK 100

1M E HERON, Sanders, MT

Built 1976 Load: 32.7 t ADT: 65

KLAKKEN RD

Good

Over: PILGRIM CREEK 053

E NOXON, Sanders, MT

Built 1972 Load: 32.7 t ADT: 170

WINCHESTER RD

Good

Over: ELK CREEK 057

2M S HERON, Sanders, MT

Built 1992 Load: 32.7 t ADT: 100

WILKES CREEK ROAD

Good

Over: PROSPECT CREEK 006

3M SW THOMPSON FALLS, Sanders, MT

Built 1978 Load: 32.7 t ADT: 100

THOMPSON R PASS RD

Good

Over: THOMPSON RIVER 062

23M N PLAINS, Sanders, MT

Built 1976 Load: 32.7 t ADT: 40

S 556-THOMPSON R R

Good

Over: THOMPSON RIVER

30M SW MARION, Sanders, MT

Built 1988 Load: 32.7 t ADT: 55

LIL BITTERROOT RD

Good

Over: WARM SPRING CREEK 093

4M E HOT SPRINGS, Sanders, MT

Built 2009 Load: 33.4 t ADT: 100

S 200

Good

Over: BEAVER CREEK

3M SE TROUT CREEK, Sanders, MT

Built 1986 Load: 34.5 t ADT: 2,030

S 200

Good

Over: RR

2M SE THOMPSON FALLS, Sanders, MT

Built 2000 Load: 35.4 t ADT: 2,247

W FK THOMPSON RD

Good

Over: HONEYMOON CR

THOMPSON-FISHTRAP, Sanders, MT

Built 2007 Load: 36.0 t ADT: 40

REVAIS CREEK ROAD

Good

Over: REVAIS CREEK 103

1.5M S MT 200, Sanders, MT

Built 2012 Load: 37.9 t ADT: 100

W FK ELK CREEK RD

Good

Over: W FORK ELK CREEK 052

5M SW HERON, Sanders, MT

Built 1965 Load: 38.1 t ADT: 100

S 200

Good

Over: THOMPSON RIVER

5M SE THOMPSON FALLS, Sanders, MT

Built 2015 Load: 39.0 t ADT: 2,136

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