Custer County, ID

81 public highway bridges

Custer County Bridge Snapshot

Custer County, Idaho contains 81 public highway bridges in the FHWA National Bridge Inventory. Roughly 33.3% are rated “Good,” 56.8% “Fair,” 9.9% “Poor,” and 9.9% 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 ID 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
33.3%
Good
9.9%
Poor
9.9%
Structurally Deficient

Condition Distribution

Good
33.3% (27)
Fair
56.8% (46)
Poor
9.9% (8)
SD
9.9% (8)

All Bridges (81)

FDR

Fair

Over: EAST FORK SALMON RIVER

22 MILES UP EAST FORK R., Custer, ID

Built 1989 ADT: 50

NO DATA ENTERED

Fair

Over: YANKEE FORK

NO DATA ENTERED, Custer, ID

Built 1972 Load: 8.4 t ADT: 50

NO DATA ENTERED

Fair

Over: YANKEE FORK

NO DATA ENTERED, Custer, ID

Built 1972 Load: 11.3 t ADT: 50

NO DATA ENTERED

Fair

Over: JORDAN CREEK

NO DATA ENTERED, Custer, ID

Built 1972 Load: 13.0 t ADT: 100

NO DATA ENTERED

Fair

Over: YANKEE FORK

NO DATA ENTERED, Custer, ID

Built 1972 Load: 14.9 t ADT: 50

HOUSTON ROAD

Fair

Over: BIG LOST RIVER

1.5 S. 1.5 E. MACKAY, Custer, ID

Built 1973 Load: 16.3 t ADT: 170

CUSTER MOTORWAY

Fair

Over: YANKEE FORK RIVER

NO DATA ENTERED, Custer, ID

Built 1961 Load: 16.5 t ADT: 100

FDR

Fair

Over: SALMON RIVER

7 MILES EAST STANLEY, Custer, ID

Built 1967 Load: 16.5 t ADT: 50

CUSTER MOTORWAY

Fair

Over: YANKEE FORK

NO DATA ENTERED, Custer, ID

Built 2004 Load: 17.5 t ADT: 100

BEAVER CREEK ROAD

Fair

Over: BEAVER CREEK

NO DATA ENTERED, Custer, ID

Built 1953 Load: 18.8 t ADT: 50

FDR

Fair

Over: EAST FORK SALMON RIVER

28 MILES UP EAST FORK R., Custer, ID

Built 1960 Load: 19.1 t ADT: 50

FDR

Fair

Over: ALTURAS LAKE CREEK

12 MILES SOUTH OF STANLEY, Custer, ID

Built 1955 Load: 19.8 t ADT: 50

FDR

Fair

Over: SALMON RIVER

4 MILES NE OF STANLEY, Custer, ID

Built 1969 Load: 19.8 t ADT: 50

SAWMILL CANYON RD

Fair

Over: LITTLE LOST RIVER

40.5 MI. NNW OF HOWE ID, Custer, ID

Built 1957 Load: 20.1 t ADT: 40

BEAVER CREEK ROAD

Fair

Over: SEAFOAM CREEK

NO DATA ENTERED, Custer, ID

Built 1968 Load: 20.7 t ADT: 10

SQ___ CREEK ROAD

Fair

Over: PAASASIKWANA NAOKWAIDE

NO DATA ENTERED, Custer, ID

Built 1964 Load: 21.4 t ADT: 20

BEAVER-LOON ROAD

Fair

Over: LOON CREEK

NO DATA ENTERED, Custer, ID

Built 1957 Load: 21.7 t ADT: 10

SH 21

Fair

Over: CROOKED CREEK

3.1 W. STANLEY, Custer, ID

Built 1968 Load: 22.7 t ADT: 1,800

BEAVER CREEK ROAD

Fair

Over: MARSH CREEK

CROSSES MARSH CREEK, Custer, ID

Built 1964 Load: 22.7 t ADT: 50

TREALOR CREEK ROAD

Fair

Over: SQ___ CREEK

NO DATA ENTERED, Custer, ID

Built 1966 Load: 24.0 t ADT: 40

FDR

Fair

Over: FISHHOOK CREEK

REDFISH LAKE BEACH AREA, Custer, ID

Built 1956 Load: 24.0 t ADT: 50

FDR

Fair

Over: STANLEY LAKE CREEK

1/2 MILE EAST OF HWY 21, Custer, ID

Built 1969 Load: 24.0 t ADT: 50

SQ___ CREEK ROAD

Fair

Over: PAASASIKWANA NAOKWAIDE

NO DATA ENTERED, Custer, ID

Built 1964 Load: 24.3 t ADT: 20

KANE CREEK ROAD

Fair

Over: KANE CREEK

NO DATA ENTERED, Custer, ID

Built 1966 Load: 24.9 t ADT: 40

ROAD

Fair

Over: KNAPP CREEK

NO DATA ENTERED, Custer, ID

Built 1964 Load: 25.6 t ADT: 10

CUSTER MOTORWAY

Fair

Over: YANKEE FORK

NO DATA ENTERED, Custer, ID

Built 1973 Load: 25.9 t ADT: 100

THOMPSON CR ROAD

Fair

Over: THOMPSON CREEK

NO DATA ENTERED, Custer, ID

Built 1982 Load: 25.9 t ADT: 40

BEAVER-LOON ROAD

Fair

Over: BEAVER CREEK

NO DATA ENTERED, Custer, ID

Built 1972 Load: 25.9 t ADT: 5

FDR

Fair

Over: GERMANIA CEEEK

25 UP EAST FORK SALMON R., Custer, ID

Built 1956 Load: 25.9 t ADT: 50

BEAVER-LOON ROAD

Fair

Over: BEAVER CREEK

NO DATA ENTERED, Custer, ID

Built 1967 Load: 26.2 t ADT: 10

BEAVER-LOON ROAD

Fair

Over: NELSON CREEK

19 MILES NORTH OF SUNBEAM, Custer, ID

Built 1967 Load: 26.2 t ADT: 10

BULL CREEK ROAD

Fair

Over: LITTLE LOST RIVER

NO DATA ENTERED, Custer, ID

Built 1971 Load: 26.2 t ADT: 10

CUSTER MOTORWAY

Fair

Over: YANKEE FORK

NO DATA ENTERED, Custer, ID

Built 1969 Load: 26.6 t ADT: 100

BASIN CREEK ROAD

Fair

Over: EAST FORK BASIN CREEK

NO DATA ENTERED, Custer, ID

Built 1979 Load: 26.6 t ADT: 40

COPPER BASIN LOOP

Fair

Over: STAR HOPE CREEK

21.0 E. SUN VALLEY, Custer, ID

Built 1970 Load: 27.2 t ADT: 20

BEAVER-LOON ROAD

Fair

Over: W.FK MAYFIELD CREEK

19 MILES N OF SUNBEAM, Custer, ID

Built 1968 Load: 27.2 t ADT: 10

BEAVER CREEK ROAD

Fair

Over: FLOAT CREEK

NO DATA ENTERED, Custer, ID

Built 1967 Load: 28.2 t ADT: 10

CORRAL CANYON ROAD

Fair

Over: N. FK. BIG LOST RIVER

NO DATA ENTERED, Custer, ID

Built 1979 Load: 28.5 t ADT: 40

CUSTER MOTORWAY

Fair

Over: YANKEE FORK

NO DATA ENTERED, Custer, ID

Built 1962 Load: 29.2 t ADT: 100

BEAVER-LOON ROAD

Fair

Over: W.FK. MAYFIELD CREEK

NO DATA ENTERED, Custer, ID

Built 1968 Load: 29.2 t ADT: 10

BEAVER-LOON ROAD

Fair

Over: W. FK. MAYFIELD CREEK

NO DATA ENTERED, Custer, ID

Built 1967 Load: 29.2 t ADT: 10

FDR

Fair

Over: SALMON RIVER

1 MILE WEST SVWC SNRA, Custer, ID

Built 1960 Load: 29.2 t ADT: 50

SH 75

Fair

Over: REDFISH LAKE CREEK

5.6 S. STANLEY, Custer, ID

Built 1960 Load: 31.8 t ADT: 1,100

FDR

Fair

Over: PETTIT LAKE CREEK

PETTIT LAKE, Custer, ID

Built 1982 Load: 35.3 t ADT: 50

FDR

Fair

Over: HELL ROARING CREEK

2 MILES WEST SVWC, Custer, ID

Built 1984 Load: 43.1 t ADT: 50

BEAVER-LOON ROAD

Fair

Over: JORDAN CREEK

NO DATA ENTERED, Custer, ID

Built 2001 Load: 43.4 t ADT: 100

FDR

Good

Over: EAST FORK SALMON RIVER

20 MILES FROM MOUTH OF R., Custer, ID

Built 1989 ADT: 50

FDR

Good

Over: EAST FORK SALMON RIVER

BOWERY GUARD STATION, Custer, ID

Built 1991 ADT: 50

FDR

Good

Over: HUCKELBERRY CREEK

3 MILES WEST SESSIONS LOE, Custer, ID

Built 1984 ADT: 50

FDR

Good

Over: VALLEY CREEK

NORTH MP120.7 ST HWY 21, Custer, ID

Built 1986 ADT: 60

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