Boundary County, ID

52 public highway bridges

Boundary County Bridge Snapshot

Boundary County, Idaho contains 52 public highway bridges in the FHWA National Bridge Inventory. Roughly 40.4% are rated “Good,” 48.1% “Fair,” 11.5% “Poor,” and 11.5% 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 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.

52
Total Bridges
40.4%
Good
11.5%
Poor
11.5%
Structurally Deficient

Condition Distribution

Good
40.4% (21)
Fair
48.1% (25)
Poor
11.5% (6)
SD
11.5% (6)

All Bridges (52)

FS ROUTE #231

Fair

Over: PACK RIVER

20 MILES FROM SAMUEL, ID, Boundary, ID

Built 1988 Load: 12.0 t ADT: 50

FS ROUTE NO. 231

Fair

Over: ZUNI CREEK

ZUNI CREEK, Boundary, ID

Built 1987 Load: 13.9 t ADT: 50

STC 5805;WESTSIDE

Fair

Over: LONG CANYON CREEK

3.2 S. 1.8 W. PORTHILL, Boundary, ID

Built 1956 Load: 16.3 t ADT: 70

FS ROUTE NO. 661

Fair

Over: TOOT CREEK

TOOT CREEK, Boundary, ID

Built 1987 Load: 18.5 t ADT: 50

FS ROUTE NO. 314

Fair

Over: BOULDER CREEK

BOULDER CREEK, Boundary, ID

Built 1957 Load: 18.8 t ADT: 50

STC 5803;MOYIE RVR

Fair

Over: MOYIE RIVER;MEADOW CREEK

10.2 S. ADDIE, Boundary, ID

Built 1928 Load: 21.8 t ADT: 120

FS ROUTE NO. 628

Fair

Over: BOULDER CREEK

BOULDER CREEK, Boundary, ID

Built 1981 Load: 22.7 t ADT: 50

FS ROUTE NO. 2517

Fair

Over: SPRUCE CREEK

SPRUCE CREEK, Boundary, ID

Built 1977 Load: 26.6 t ADT: 40

FS ROUTE NO. 1013

Fair

Over: CEDAR CREEK

CEDAR CREEK, Boundary, ID

Built 1964 Load: 28.5 t ADT: 50

US 95

Fair

Over: TRAIL CREEK

AT NAPLES, Boundary, ID

Built 1965 Load: 29.0 t ADT: 6,000

FS ROUTE NO. 871

Fair

Over: E.F.CANUCK CR

EAST FORK CANUCK CREEK, Boundary, ID

Built 1990 Load: 29.2 t ADT: 50

FS ROUTE NO. 1013

Fair

Over: LIME CREEK

LIME CREEK, Boundary, ID

Built 1964 Load: 29.5 t ADT: 40

STC 5804;WESTSIDE

Fair

Over: BALL CREEK

6.7N. 4.7W. BONNERS FERRY, Boundary, ID

Built 1990 Load: 30.8 t ADT: 300

FS ROUTE NO. 2798

Fair

Over: CANUCK CREEK

CANUCK CR, Boundary, ID

Built 1957 Load: 31.4 t ADT: 50

NO DATA ENTERED

Fair

Over: BALL CREEK

BALL CREEK, Boundary, ID

Built 1963 Load: 32.7 t ADT: 50

FS ROUTE NO. 211

Fair

Over: MEADOW CREEK

MEADOW CREEK, Boundary, ID

Built 1961 Load: 33.7 t ADT: 50

FS ROUTE NO. 2545

Fair

Over: COW CREEK

COW CREEK, Boundary, ID

Built 1964 Load: 36.3 t ADT: 50

FS ROUTE NO. 636

Fair

Over: GRASS CREEK

GRASS CREEK, Boundary, ID

Built 1973 Load: 36.9 t ADT: 50

STC 5806;RIVERSIDE

Fair

Over: DEEP CREEK

0.7N. 3.2W. BONNERS FERRY, Boundary, ID

Built 1975 Load: 37.2 t ADT: 360

STC 5804;WESTSIDE

Fair

Over: TROUT CREEK;N.BRANCH

4.8 S. 2.3 W. COPELAND, Boundary, ID

Built 1957 Load: 38.1 t ADT: 300

STC 5804;WESTSIDE

Fair

Over: FISHER CREEK

1.5S. 2.9W. COPELAND, Boundary, ID

Built 2003 Load: 39.0 t ADT: 300

FS ROUTE NO. 281

Fair

Over: SMITH CREEK

SMITH CREEK, Boundary, ID

Built 1974 Load: 39.9 t ADT: 50

US 95

Fair

Over: MOYIE R; UPPER EASTPORT

0.1 S. EASTPORT (CANADA), Boundary, ID

Built 2005 Load: 40.8 t ADT: 550

US 95

Fair

Over: DEEP CR;BNRR;UPRR;NAPLES

0.4 S. NAPLES, Boundary, ID

Built 1965 Load: 44.5 t ADT: 7,000

US 95

Fair

Over: WILDLIFE UNDERPASS

15.6 S. EASTPORT, Boundary, ID

Built 2004 Load: 57.2 t ADT: 1,100

FS ROUTE NO. 628

Good

Over: E.F. BOULDER

EAST FORK BOULDER, Boundary, ID

Built 2022 ADT: 50

FS ROUTE NO. 2646

Good

Over: N. CARIBOU CR

NORTH CARIBOU CREEK, Boundary, ID

Built 1987 Load: 17.5 t ADT: 50

FS ROUTE NO. 2443

Good

Over: SMITH CREEK

SMITH CREEK, Boundary, ID

Built 1964 Load: 18.5 t ADT: 50

FS ROUTE NO. 448

Good

Over: ROUND PRAIRIE CREEK

ROUND PRAIRIE CREEK, Boundary, ID

Built 1978 Load: 24.3 t ADT: 40

OLD ADDIE ROAD

Good

Over: MOYIE RIVER (ADDIE BR)

0.1 N. 0.7 E. ADDIE, Boundary, ID

Built 1991 Load: 24.5 t ADT: 90

FS ROUTE NO. 633

Good

Over: PEAK CREEK

PEAK CREEK, Boundary, ID

Built 1955 Load: 25.6 t ADT: 40

HELLROARING RIDGE

Good

Over: HELLROARING CREEK

HELLROARING CREEK XING, Boundary, ID

Built 2017 Load: 27.2 t ADT: 50

FS ROUTE NO. 2549

Good

Over: SKIN CREEK

SKIN CREEK, Boundary, ID

Built 1957 Load: 27.9 t ADT: 40

FS ROUTE NO. 2567

Good

Over: BEAVER CREEK

BEAVER CREEK, Boundary, ID

Built 1979 Load: 29.8 t ADT: 50

FS ROUTE NO. 1309

Good

Over: MYRTLE CREEK

MYRTLE CREEK, Boundary, ID

Built 1981 Load: 30.1 t ADT: 50

FS ROUTE NO. 435

Good

Over: KENO CREEK

KENO CREEK, Boundary, ID

Built 2011 Load: 30.5 t ADT: 40

FS ROUTE #2646

Good

Over: SNOW CREEK

10 MI. FROM BONNERS FERRY, Boundary, ID

Built 1980 Load: 30.5 t ADT: 40

TWENTY MILE CR RD

Good

Over: TWENTY MILE CREEK

7.0 S 3.0 W BONNERS FERR, Boundary, ID

Built 2007 Load: 30.8 t ADT: 130

FS ROUTE 633

Good

Over: JIM CREEK

JIM CREEK, Boundary, ID

Built 2010 Load: 31.4 t ADT: 40

R0AD

Good

Over: DEER CREEK

NO DATA ENTERED, Boundary, ID

Built 2015 Load: 33.0 t ADT: 40

STC5907;DEEP CRK

Good

Over: DEEP CREEK

1.5 N 0.3 W NAPLES, Boundary, ID

Built 2014 Load: 34.3 t ADT: 360

STC5907;DEEP CREEK

Good

Over: DEEP CREEK #4

4.1 N 0.3 E. NAPLES, Boundary, ID

Built 2012 Load: 35.0 t ADT: 360

US 95

Good

Over: UPRR;S. EASTPORT OP

1.1 S. EASTPORT, Boundary, ID

Built 2007 Load: 37.2 t ADT: 1,100

FS ROUTE NO. 1007

Good

Over: SNOW CREEK

SNOW CREEK, Boundary, ID

Built 1972 Load: 38.9 t ADT: 50

FS ROUTE 281

Good

Over: COW CREEK

8.6 MI FROM FH.18 JCT., Boundary, ID

Built 1984 Load: 41.8 t ADT: 40

STC 5804;WESTSIDE

Good

Over: TROUT CREEK

5.0 S. 2.3 W. COPELAND, Boundary, ID

Built 2020 Load: 42.8 t ADT: 300

STC 5804;WESTSIDE

Poor

Over: MYRTLE CREEK

0.8N. 4.8W. BONNERS FERRY, Boundary, ID

Built 1958 Load: 23.6 t ADT: 300

RUBY CREEK RD

Poor

Over: RUBY CREEK(#4)

3.3 N. 0.8 W. NAPLES, Boundary, ID

Built 1970 Load: 30.8 t ADT: 30

FS ROUTE NO. 1009

Poor

Over: GRASS CREEK

GRASS CR, Boundary, ID

Built 1972 Load: 32.7 t ADT: 50

FS ROUTE NO. 2450

Structurally Deficient

Over: BLUE JOE CREEK

BLUE JOE CREEK, Boundary, ID

Built 1953 ADT: 50

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