Whatcom County, WA

358 public highway bridges

Whatcom County Bridge Snapshot

Whatcom County, Washington contains 358 public highway bridges in the FHWA National Bridge Inventory. Roughly 38.3% are rated “Good,” 46.6% “Fair,” 5.3% “Poor,” and 5.3% 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 WA 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.

358
Total Bridges
38.3%
Good
5.3%
Poor
5.3%
Structurally Deficient

Condition Distribution

Good
38.3% (137)
Fair
46.6% (167)
Poor
5.3% (19)
SD
5.3% (19)

All Bridges (358)

VALLEY VIEW RD

Fair

Over: HAYNIE CR

00.1 S MCGEE RD., Whatcom, WA

Built 1956 Load: 15.9 t ADT: 820

STEIN RD

Fair

Over: DAKOTA CR TRIB

00.7 S. HAYNIE RD., Whatcom, WA

Built 1906 Load: 15.9 t ADT: 323

ASSINK RD

Fair

Over: FISHTRAP CR

00.1 MI N PANGBORN, Whatcom, WA

Built 1949 Load: 16.3 t ADT: 195

LOOMIS TRAIL RD

Fair

Over: BERTRAND CR

00.6 W BERTHUSEN RD, Whatcom, WA

Built 1938 Load: 16.3 t ADT: 1,839

GARRISON RD

Fair

Over: SUMAS RIVER

00.2 N LINDSAY RD., Whatcom, WA

Built 1935 Load: 16.3 t ADT: 252

VAN BUREN RD

Fair

Over: JOHNSON CR

0.6 mi. N LINDSAY RD, Whatcom, WA

Built 1950 Load: 16.3 t ADT: 1,031

BARRETT RD

Fair

Over: BARRETT CREEK

0.4 N W AXTON RD, Whatcom, WA

Built 1969 Load: 16.5 t ADT: 1,316

JONES RD

Fair

Over: SUMAS RIVER

00.1 W CONCHMAN RD., Whatcom, WA

Built 1917 Load: 16.5 t ADT: 220

CUSTER SCHOOL RD

Fair

Over: DAKOTA CR TRIB

00.5 S BEHME RD, Whatcom, WA

Built 1954 Load: 16.8 t ADT: 843

CUSTER SCHOOL RD

Fair

Over: DAKOTA CR

00.6 S BEHME RD, Whatcom, WA

Built 1950 Load: 16.8 t ADT: 844

LINDSAY RD

Fair

Over: SUMAS RIVER

01.0 W GARRISON RD., Whatcom, WA

Built 1956 Load: 16.8 t ADT: 267

NORTHWEST DR

Fair

Over: TEN MILE CR

0.1 S OF LAUREL RD, Whatcom, WA

Built 1935 Load: 16.8 t ADT: 4,900

BEHME RD

Fair

Over: DAKOTA CR

00.01 E VALLEY VIEW, Whatcom, WA

Built 1930 Load: 17.2 t ADT: 189

POTTER RD

Fair

Over: SLOUGH

00.4 W VALLEY HWY, Whatcom, WA

Built 1934 Load: 17.2 t ADT: 575

GILLIES RD

Fair

Over: SUMAS RIVER

00.2 N OF ALM RD., Whatcom, WA

Built 1932 Load: 17.2 t ADT: 280

LIND RD

Fair

Over: SMITH CR

00.1 S LAWRENCE RD., Whatcom, WA

Built 1955 Load: 17.2 t ADT: 50

FLANNEGAN RD

Fair

Over: JOHNSON CR

00.2 N W GARRISON, Whatcom, WA

Built 1955 Load: 18.1 t ADT: 40

ROCK RD

Fair

Over: SAAR CR

.18 W OF LENHART RD, Whatcom, WA

Built 1966 Load: 18.1 t ADT: 524

SLATER RD

Fair

Over: RED RIVER

03.90 W OF NW DR, Whatcom, WA

Built 1900 Load: 18.1 t ADT: 11,365

BRIDGE WY

Fair

Over: CALIFORNIA CR

0.02 SW LOOMIS TR, Whatcom, WA

Built 1922 Load: 18.1 t ADT: 12

PARK ENTRANCE ROAD

Fair

Over: TERRELL CREEK

BIRCH BAY STATE PARK, Whatcom, WA

Built 1963 Load: 18.1 t ADT: 135

MOSQUITO LK RD

Fair

Over: MIDDLE FORK

05.2 SE MT.BAKER HY, Whatcom, WA

Built 1915 Load: 18.5 t ADT: 117

TEN MILE RD

Fair

Over: TEN MILE CR

00.3 E HANNEGAN RD., Whatcom, WA

Built 1934 Load: 18.8 t ADT: 372

VALLEY VIEW RD

Fair

Over: CALIFORNIA CR

00.1 N. ARNIE RD., Whatcom, WA

Built 1949 Load: 19.0 t ADT: 365

LENHART RD

Fair

Over: SAAR CREEK

00.2 N OF ROCK RD, Whatcom, WA

Built 1953 Load: 19.0 t ADT: 8

BYLSMA RD

Fair

Over: DRAINAGE DITCH

00.7 N E. WISER LK., Whatcom, WA

Built 1951 Load: 19.0 t ADT: 72

SAXON RD

Fair

Over: SOUTH FORK NOOKSACK

2.0 E SR 9, Whatcom, WA

Built 1998 Load: 19.1 t ADT: 256

SHADY LN

Fair

Over: SILVER CREEK

00.14 N RURAL AVE, Whatcom, WA

Built 1953 Load: 19.4 t ADT: 70

PANGBORN RD

Fair

Over: FISH TRAP CR

0.1 W ASSINK RD., Whatcom, WA

Built 1954 Load: 19.4 t ADT: 700

DELTA LINE RD

Fair

Over: DAKOTA CR

00.2 S HAYNIE RD., Whatcom, WA

Built 1965 Load: 19.4 t ADT: 1,500

SR 542

Fair

Over: GALENA CREEK

30.8 E JCT SR 547, Whatcom, WA

Built 1946 Load: 19.8 t ADT: 608

I-5

Fair

Over: PORTAL WAY

7.3 N JCT SR 539, Whatcom, WA

Built 1963 Load: 19.8 t ADT: 17,069

TELEGRAPH RD N

Fair

Over: SUMAS RIVER

00.5 N.E.MORGAN RD., Whatcom, WA

Built 1943 Load: 20.0 t ADT: 1,272

I-5

Fair

Over: PORTAL WAY

7.3 N JCT SR 539, Whatcom, WA

Built 1963 Load: 20.1 t ADT: 17,069

I-5

Fair

Over: NULLE RD

0.2 N SKAGIT CO, Whatcom, WA

Built 1963 Load: 20.4 t ADT: 22,967

BRECKINRIDGE RD

Fair

Over: SUMAS RIVER

00.4 E NOOKSACK RD., Whatcom, WA

Built 1954 Load: 20.4 t ADT: 1,274

MAIN STREET

Fair

Over: NOOKSACK RIVER

AT FRONT ST, Whatcom, WA

Built 1950 Load: 20.7 t ADT: 21,350

ROAD

Fair

Over: PARK CREEK

NO DATA ENTERED, Whatcom, WA

Built 1955 Load: 20.9 t ADT: 35

GOOSEBERRY SPUR

Fair

Over: HALE PASSAGE

2. SW OF CAGEY RD., Whatcom, WA

Built 1950 Load: 20.9 t ADT: 1,300

TEN MILE RD

Fair

Over: TEN MILE CR TRIB

00.2 E GUIDE MERIDI, Whatcom, WA

Built 1900 Load: 20.9 t ADT: 841

GOOSEBERRY SPUR

Fair

Over: HALE PASSAGE

2.03 SE PT MIGLEY, Whatcom, WA

Built 1978 Load: 21.1 t ADT: 1,300

GOOSEBERRY SPUR

Fair

Over: HALE PASSAGE

2.03 SE PT MIGLEY, Whatcom, WA

Built 1978 Load: 21.1 t ADT: 1,300

MOSQUITO LK RD

Fair

Over: NORTH FORK

00.2 W N. FORK RD., Whatcom, WA

Built 1930 Load: 21.1 t ADT: 800

SR 542

Fair

Over: COAL CREEK

6.1 E JCT SR 9, Whatcom, WA

Built 1946 Load: 21.4 t ADT: 5,182

HILLSIDE RD

Fair

Over: FALLS CREEK

01.9 W VALLEY HWY, Whatcom, WA

Built 1969 Load: 21.4 t ADT: 194

ALDERSON RD

Fair

Over: TERRELL CREEK

0.01 W BIRCHBAY DR, Whatcom, WA

Built 1987 Load: 21.4 t ADT: 2,184

SR 542

Fair

Over: FOSSIL CREEK

15.8 E JCT SR 547, Whatcom, WA

Built 1934 Load: 21.8 t ADT: 1,251

SR 542

Fair

Over: KENDALL CREEK

7.4 E JCT SR 9, Whatcom, WA

Built 1964 Load: 21.8 t ADT: 5,182

ROAD

Fair

Over: BAR CREEK

NO DATA ENTERED, Whatcom, WA

Built 1960 Load: 21.8 t ADT: 42

RD. 31. MP 7.1

Fair

Over: KIDNEY CREEK

7.1 MILES FROM SH 542, Whatcom, WA

Built 1953 Load: 21.8 t ADT: 73

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