Idaho County, ID

130 public highway bridges

Idaho County Bridge Snapshot

Idaho County, Idaho contains 130 public highway bridges in the FHWA National Bridge Inventory. Roughly 37.7% are rated “Good,” 54.6% “Fair,” 7.7% “Poor,” and 7.7% 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.

130
Total Bridges
37.7%
Good
7.7%
Poor
7.7%
Structurally Deficient

Condition Distribution

Good
37.7% (49)
Fair
54.6% (71)
Poor
7.7% (10)
SD
7.7% (10)

All Bridges (130)

FOREST ROAD 1809

Fair

Over: AMERICAN RIVER

NO DATA ENTERED, Idaho, ID

Built 1961 Load: 31.1 t ADT: 50

FOREST ROAD 651

Fair

Over: O'HARA CREEK

NO DATA ENTERED, Idaho, ID

Built 1958 Load: 34.0 t ADT: 50

NO DATA ENTERED

Fair

Over: WARREN CR

NO DATA ENTERED, Idaho, ID

Built 1969 Load: 34.7 t ADT: 50

2508: PARTRIDGE CR

Fair

Over: PARTRIDGE CREEK

Travel East on Big Salmon, Idaho, ID

Built 1990 Load: 36.0 t ADT: 4

B AVE

Fair

Over: S. FORK CLEARWATER

IN KOOSKIA;B AVE-FRONT ST, Idaho, ID

Built 1963 Load: 36.3 t ADT: 100

STC 4721;BRIDGE ST

Fair

Over: S.FK.CLEARWATER RIVER

IN STITES, Idaho, ID

Built 1961 Load: 36.3 t ADT: 760

CAMP GRD. RD. 221B

Fair

Over: SLATE CREEK

ROCKY BLUFF C.G., Idaho, ID

Built 1957 Load: 36.6 t ADT: 50

FDR 373

Fair

Over: NF SPRUCE CREEK

BRUSHY FK, Idaho, ID

Built 2008 Load: 36.6 t ADT: 50

NO DATA ENTERED

Fair

Over: ELDORADO CREEK

FAN CREEK BRIDGE, Idaho, ID

Built 1974 Load: 36.9 t ADT: 20

FOREST ROAD 492

Fair

Over: TWENTY MILE CREEK

NO DATA ENTERED, Idaho, ID

Built 1958 Load: 36.9 t ADT: 40

LAKE CK ROAD 50104

Fair

Over: LAKE CREEK

NO DATA ENTERED, Idaho, ID

Built 1969 Load: 38.2 t ADT: 50

FOREST ROAD 651

Fair

Over: O'HARA CREEK

NO DATA ENTERED, Idaho, ID

Built 1958 Load: 39.5 t ADT: 50

FOREST ROAD 443

Fair

Over: AMERICAN RIVER

4 MILES NORTH OF ELK CITY, Idaho, ID

Built 1965 Load: 40.2 t ADT: 50

FOREST ROAD 222-D

Fair

Over: CROOKED CREEK

DIXIE, ID, Idaho, ID

Built 1959 Load: 41.8 t ADT: 10

2508: PARTRIDGE CR

Fair

Over: PARTRIDGE CREEK

Travel East on Big Salmon, Idaho, ID

Built 1990 Load: 42.8 t ADT: 4

SH 162

Fair

Over: LAWYERS CANYON CREEK

1.6 S KAMIAH, Idaho, ID

Built 2002 Load: 44.5 t ADT: 1,100

STC 4718;SELWAY RD

Fair

Over: LOCHSA RIVER(LOWELL BR)

0.1 N. 18.2 E. KOOSKIA, Idaho, ID

Built 1960 Load: 45.4 t ADT: 180

FDR 1649

Fair

Over: BOULDER CREEK

WILDERNESS GATEWAY, Idaho, ID

Built 1968 Load: 46.7 t ADT: 30

FOREST ROAD 221

Fair

Over: ALLISON CREEK

NO DATA ENTERED, Idaho, ID

Built 1964 Load: 51.2 t ADT: 50

ROUTE 468-A

Fair

Over: DEEP CR

NO DATA ENTERED, Idaho, ID

Built 1938 Load: 66.7 t ADT: 10

SH 162

Fair

Over: SEVEN MILE CREEK

4.4 S. KAMIAH, Idaho, ID

Built 1997 Load: 99.9 t ADT: 1,100

FSR 360

Good

Over: HORSE CREEK

NEAR ELK SUMMIT CG, Idaho, ID

Built 2009 ADT: 50

NO DATA ENTERED

Good

Over: SUMMIT CREEK

NO DATA ENTERED, Idaho, ID

Built 1977 ADT: 50

NO DATA ENTERED

Good

Over: NO DATA ENTERED

NO DATA ENTERED, Idaho, ID

Built 2011 Load: 13.0 t ADT: 10

FOREST ROAD 233

Good

Over: WILDHORSE CREEK

NEAR OROGRANDE SUMMIT, Idaho, ID

Built 1955 Load: 15.6 t ADT: 50

NO DATA ENTERED

Good

Over: WHITE CAP CR

NO DATA ENTERED, Idaho, ID

Built 1936 Load: 19.1 t ADT: 20

NO DATA ENTERED

Good

Over: SELWAY RIVER

NO DATA ENTERED, Idaho, ID

Built 1935 Load: 20.1 t ADT: 10

STC 4706;WARREN RD

Good

Over: SUMMIT CREEK

3.6 S. 0.8 E. BURGDORF, Idaho, ID

Built 1975 Load: 23.6 t ADT: 110

FOREST ROAD 1875

Good

Over: RAINY DAY CREEK

NO DATA ENTERED, Idaho, ID

Built 1972 Load: 23.7 t ADT: 40

NO DATA ENTERED

Good

Over: SNAKE CR

NO DATA ENTERED, Idaho, ID

Built 1949 Load: 24.3 t ADT: 40

FRD 5671

Good

Over: PACK CREEK

10 MINS S OF LOLO PASS, Idaho, ID

Built 2012 Load: 24.9 t ADT: 10

2502: LYONS BAR

Good

Over: White Bird Creek

0.5 mi W of US95, Idaho, ID

Built 2000 Load: 25.6 t ADT: 25

FOREST ROAD 1803

Good

Over: RED RIVER

2 MI. FROM ELK CITY, Idaho, ID

Built 1967 Load: 25.9 t ADT: 40

CROOKED RIVER ROAD

Good

Over: CROOKED RIVER

6.0 S. 4.0 W. ELK CITY, Idaho, ID

Built 1965 Load: 26.3 t ADT: 110

NO DATA ENTERED

Good

Over: LOLO CREEK

WHITE CREEK, Idaho, ID

Built 1987 Load: 26.6 t ADT: 150

FDR 568

Good

Over: EAST FORK LEGENDARY BEAR

RD. 568 MP 3.20, Idaho, ID

Built 2003 Load: 26.6 t ADT: 5

NO DATA ENTERED

Good

Over: INDIAN CREEK

NO DATA ENTERED, Idaho, ID

Built 2011 Load: 27.2 t ADT: 100

FOREST ROUTE 311

Good

Over: BIG CREEK

BIG CREEK DRAINAGE, Idaho, ID

Built 2019 Load: 27.5 t ADT: 50

WESTLAKE ROAD

Good

Over: WILLOW CREEK

1.8 S. 6.0 W. FERDINAND, Idaho, ID

Built 1996 Load: 28.1 t ADT: 70

FOREST RD. 221-2

Good

Over: SLATE CR

32 MI. FROM GRANGEVILLE, Idaho, ID

Built 1976 Load: 28.2 t ADT: 40

FOREST ROAD 642

Good

Over: SO. FK. WHITE BIRD CREEK

NO DATA ENTERED, Idaho, ID

Built 2008 Load: 28.5 t ADT: 25

NO DATA ENTERED

Good

Over: HOODOO CREEK

ELK SUMMIT-RD 111, Idaho, ID

Built 1950 Load: 29.2 t ADT: 30

FOREST ROAD 1172

Good

Over: RED RIVER

NO DATA ENTERED, Idaho, ID

Built 1961 Load: 29.2 t ADT: 40

NO DATA ENTERED

Good

Over: LAKE CREEK

NO DATA ENTERED, Idaho, ID

Built 2001 Load: 29.5 t ADT: 50

FOREST ROAD 492

Good

Over: SO FK CLEARWATER RV

SANTIAM, Idaho, ID

Built 1980 Load: 29.8 t ADT: 50

SAVAGE PASS ROAD

Good

Over: BRIDGE CREEK

NO DATA ENTERED, Idaho, ID

Built 2008 Load: 31.8 t ADT: 40

FRD 5956

Good

Over: PACK CREEK

1 MILE EAST OF LOLO PASS, Idaho, ID

Built 2012 Load: 32.7 t ADT: 10

NO DATA ENTERED

Good

Over: WAW'AALAMNINE CREEK

JUNCTION RD 108 & 5613, Idaho, ID

Built 1978 Load: 33.0 t ADT: 30

FDR 103

Good

Over: MIDDLE CREEK

24 MI NORTH OF FDR 100, Idaho, ID

Built 1973 Load: 34.0 t ADT: 5

FOREST ROAD 440A

Good

Over: WEST FORK NEWSOME CREEK

NEWSOME CREEK DRAINAGE, Idaho, ID

Built 2019 Load: 34.3 t ADT: 50

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