Lemhi County, ID

73 public highway bridges

Lemhi County Bridge Snapshot

Lemhi County, Idaho contains 73 public highway bridges in the FHWA National Bridge Inventory. Roughly 54.8% are rated “Good,” 37% “Fair,” 8.2% “Poor,” and 8.2% 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.

73
Total Bridges
54.8%
Good
8.2%
Poor
8.2%
Structurally Deficient

Condition Distribution

Good
54.8% (40)
Fair
37% (27)
Poor
8.2% (6)
SD
8.2% (6)

All Bridges (73)

SALMON RIVER ROAD

Good

Over: SALMON RIVER

SALMON RIVER NEAR COVE CR, Lemhi, ID

Built 2012 Load: 38.6 t ADT: 350

INDIAN CREEK ROAD

Good

Over: INDIAN CREEK

NO DATA ENTERED, Lemhi, ID

Built 2008 Load: 38.6 t ADT: 5

NO DATA ENTERED

Good

Over: INDIAN CREEK

NO DATA ENTERED, Lemhi, ID

Built 2008 Load: 38.6 t ADT: 5

NO DATA ENTERED

Good

Over: DITCH CREEK

NO DATA ENTERED, Lemhi, ID

Built 2008 Load: 38.6 t ADT: 10

3040: ROCKY CANYON

Good

Over: Hawley Creek

8.4 mi E of ID28 N, Lemhi, ID

Built 2013 Load: 39.5 t ADT: 35

60030

Good

Over: SALMON RIVER

SALMON RIVER NEAR PINE CR, Lemhi, ID

Built 2012 Load: 40.8 t ADT: 350

BACK RD; OLD LEMHI

Good

Over: PRATT CREEK (#1)

9.0 E. 6.5 S. SALMON, Lemhi, ID

Built 2018 Load: 42.1 t ADT: 50

SH 28

Good

Over: LEMHI RIVER

19.6 N. LEADORE., Lemhi, ID

Built 2019 Load: 44.1 t ADT: 820

LEMHI ROAD

Good

Over: LEMHI RIVER (ALLEN BR)

0.3 S. 0.8 E. SALMON, Lemhi, ID

Built 2016 Load: 45.0 t ADT: 860

LEMHI ROAD

Good

Over: CANYON CREEK

0.8 N. 0.2 E. LEADORE, Lemhi, ID

Built 2012 Load: 48.3 t ADT: 100

DIAMOND CREEK ROAD

Good

Over: WALLACE CREEK

1.5 N 0.6 W CARMEN, Lemhi, ID

Built 2011 Load: 49.9 t ADT: 70

OLD HWY 28;BACK RD

Good

Over: KENNY CREEK

4.6 N. 0.5 W. TENDOY, Lemhi, ID

Built 2012 Load: 51.8 t ADT: 50

RATTLESNAKE CRK R

Good

Over: SALMON RIVER

18.8 S. SALMON, Lemhi, ID

Built 2016 Load: 58.6 t ADT: 60

LEESBURG ROAD

Good

Over: ARNETT CREEK

NO DATA ENTERED, Lemhi, ID

Built 1994 Load: 67.1 t ADT: 50

US 93

Good

Over: N. FORK SALMON RIVER

15.1 N. NORTH FORK, Lemhi, ID

Built 1997 Load: 73.5 t ADT: 730

US 93

Good

Over: N. FORK SALMON RIVER

15.1 N. NORTH FORK, Lemhi, ID

Built 1997 Load: 99.9 t ADT: 730

US 93

Good

Over: N. FORK SALMON RIVER

16.0 N. NORTH FORK, Lemhi, ID

Built 1997 Load: 99.9 t ADT: 730

N. ST. CHARLES

Poor

Over: LEMHI RIVER

0.4 N. 0.3 E. SALMON, Lemhi, ID

Built 1948 Load: 16.3 t ADT: 310

NO DATA ENTERED

Poor

Over: PANTHER CREEK

NO DATA ENTERED, Lemhi, ID

Built 1980 Load: 17.2 t ADT: 200

MOCCASIN-NAPIAS RD

Poor

Over: NAPIAS CREEK

NO DATA ENTERED, Lemhi, ID

Built 1953 Load: 24.3 t ADT: 25

NO DATA ENTERED

Poor

Over: YELLOWJACKET CREEK

NO DATA ENTERED, Lemhi, ID

Built 1962 Load: 29.8 t ADT: 50

NO DATA ENTERED

Poor

Over: BOULDER CREEK

NO DATA ENTERED, Lemhi, ID

Built 1966 Load: 35.3 t ADT: 200

SALMON RIVER ROAD

Poor

Over: PINE CREEK

PINE CREEK, Lemhi, ID

Built 2012 Load: 37.3 t ADT: 350

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