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)

COAL CREEK RD

Fair

Over: GALLOP CREEK

00.2 SO OF HWY 542, Whatcom, WA

Built 1952 Load: 21.8 t ADT: 18

PUTNAM RD

Fair

Over: SMITH CR

00.1 N MT BAKER HWY, Whatcom, WA

Built 1958 Load: 21.8 t ADT: 56

MOSQUITO LK RD

Fair

Over: HUTCHINSON CR

4.5 NE VALLEY HWY., Whatcom, WA

Built 1945 Load: 21.8 t ADT: 389

NORTH PASS RD

Fair

Over: SUMAS RIVER

00.3 N MINAKER RD, Whatcom, WA

Built 1949 Load: 22.0 t ADT: 260

MOSQUITO LK RD

Fair

Over: PORTER CREEK

10.3 E VALLEY HWY., Whatcom, WA

Built 1936 Load: 22.0 t ADT: 162

DRAYTON HARBOR RD

Fair

Over: CALIFORNIA CR

00.1 W. BLAINE RD., Whatcom, WA

Built 1933 Load: 22.0 t ADT: 5,920

CHESTNUT ST-BAY ST

Fair

Over: BURLINGTON NORTHERN

AT JCT W CHESTNUT/BAY ST, Whatcom, WA

Built 1930 Load: 22.0 t ADT: 6,000

E. BAKERVIEW ROAD

Fair

Over: SQUALICUM CREEK

0.2 E JCT HANNEGAN RD, Whatcom, WA

Built 1935 Load: 22.0 t ADT: 3,500

COAL CREEK RD

Fair

Over: DEEP CR

05.85 S OF SR 542, Whatcom, WA

Built 2000 Load: 22.0 t ADT: 15

ROEDER AVE

Fair

Over: BNSF RR

.25 W FED BLDG, Whatcom, WA

Built 1988 Load: 22.4 t ADT: 7,500

TELEGRAPH RD N

Fair

Over: SUMAS RIVER

00.2 N.E.DEETER RD., Whatcom, WA

Built 1953 Load: 22.7 t ADT: 1,120

HANNEGAN RD

Fair

Over: NOOKSACK RIVER

00.1 N POLINDER RD., Whatcom, WA

Built 1934 Load: 22.7 t ADT: 9,332

ROBINSON STREET

Fair

Over: NOOKSACK SLOUGH

0.06 E EVERSON RD, Whatcom, WA

Built 1960 Load: 22.7 t ADT: 10

SR 11

Fair

Over: PADDEN CREEK

5.7 N SKAGIT CO, Whatcom, WA

Built 1932 Load: 23.0 t ADT: 10,546

ROEDER AVE

Fair

Over: WHATCOM CREEK/WATERWAY

AT JCT CENTRAL AVE, Whatcom, WA

Built 1995 Load: 23.0 t ADT: 7,800

SR 542

Fair

Over: SLIDE AREA

20.4 E JCT SR 547, Whatcom, WA

Built 1938 Load: 23.3 t ADT: 1,251

PORTAL WY

Fair

Over: DAKOTA CR

00.3 NW HALL RD., Whatcom, WA

Built 1928 Load: 23.3 t ADT: 1,149

ROAD

Fair

Over: N. FORK NOOKSACK RIVER

NO DATA ENTERED, Whatcom, WA

Built 1957 Load: 23.6 t ADT: 84

I-5

Fair

Over: MEADOR AVE

2.8 N JCT SR 11, Whatcom, WA

Built 1957 Load: 24.0 t ADT: 35,827

ELLIS ST EXT

Fair

Over: WHATCOM CRK

0.05 N JCT N FOREST/YORK, Whatcom, WA

Built 1981 Load: 24.0 t ADT: 7,900

INNIS CREEK RD

Fair

Over: SAMISH RIVER

00.2 S. DOREN ROAD, Whatcom, WA

Built 1999 Load: 24.0 t ADT: 106

ROEDER AVENUE

Fair

Over: SQUALLICUM CREEK

0.02 S JCT SQUALICUM WAY, Whatcom, WA

Built 1962 Load: 24.3 t ADT: 7,200

SR 542

Fair

Over: N FK NOOKSACK R WARNICK

8.0 E JCT SR 547, Whatcom, WA

Built 1931 Load: 24.5 t ADT: 1,903

SR 9

Fair

Over: N FK NOOKSACK RIVER

12.0 N SKAGIT CO, Whatcom, WA

Built 1954 Load: 24.5 t ADT: 3,956

ROAD

Fair

Over: SULPHUR CR

NO DATA ENTERED, Whatcom, WA

Built 1954 Load: 24.5 t ADT: 81

TEN MILE RD

Fair

Over: TEN MILE CR

00.2 W CHASTEEN RD., Whatcom, WA

Built 1947 Load: 24.5 t ADT: 841

JONES RD

Fair

Over: SLEASMAN SLOUGH

00.3 E NIMS RD, Whatcom, WA

Built 1935 Load: 24.5 t ADT: 150

MOSQUITO LK RD

Fair

Over: CANYON CR

00.1 S E CANYON LK., Whatcom, WA

Built 1937 Load: 24.5 t ADT: 418

I-5

Fair

Over: MEADOR AVE

2.8 N JCT SR 11, Whatcom, WA

Built 1957 Load: 24.6 t ADT: 35,827

JONES RD

Fair

Over: SAAR CR

00.7 W NIMS RD., Whatcom, WA

Built 1946 Load: 24.6 t ADT: 206

JACKSON RD

Fair

Over: TERRELL CREEK

00.3 N Grandview Road, Whatcom, WA

Built 2003 Load: 24.6 t ADT: 897

SAXON RD

Fair

Over: SKOOKUM CR

03.42 E OF SR 9, Whatcom, WA

Built 1980 Load: 24.9 t ADT: 256

SOUTH PASS RD

Fair

Over: SWIFT CR

00.2 E NOOKSACK RD., Whatcom, WA

Built 1935 Load: 24.9 t ADT: 2,340

NO DATA ENTERED

Fair

Over: BEAVER CREEK TRIB.

.18 MILES FROM RD. #1122, Whatcom, WA

Built 2003 Load: 25.3 t ADT: 50

ROAD

Fair

Over: WARM CREEK

NO DATA ENTERED, Whatcom, WA

Built 1968 Load: 25.4 t ADT: 25

N 17TH STREET

Fair

Over: FISHTRAP CREEK

AT LIBERTY, Whatcom, WA

Built 1975 Load: 25.4 t ADT: 1,140

GOODWIN RD

Fair

Over: SWIFT CR

00.3 N MASSEY RD., Whatcom, WA

Built 1934 Load: 25.6 t ADT: 1,443

BIRCHWOOD AVE.

Fair

Over: BUG LAKE OVERFLOW

JCT BIRCHWOOD/SQUALICUM, Whatcom, WA

Built 1987 Load: 26.2 t ADT: 6,200

VALLEY VIEW RD

Fair

Over: DAKOTA CR

00.1 N OF BEHME RD., Whatcom, WA

Built 1934 Load: 26.3 t ADT: 1,033

SR 548

Fair

Over: CALIFORNIA CR

10.3 W JCT I-5, Whatcom, WA

Built 1924 Load: 27.2 t ADT: 3,717

SR 9

Fair

Over: JOHNSON CREEK

3.8 N JCT SR 546, Whatcom, WA

Built 1961 Load: 27.5 t ADT: 3,202

CORNWALL AVENUE

Fair

Over: BURLINGTON NORTHERN

0.06 NE JCT W LAUREL ST, Whatcom, WA

Built 1964 Load: 27.5 t ADT: 3,100

CHASTEEN RD

Fair

Over: TEN MILE CR

00.1 N TEN MILE RD., Whatcom, WA

Built 1946 Load: 27.9 t ADT: 68

I-5

Fair

Over: NOOKSACK RIVER

6.9 N JCT SR 539, Whatcom, WA

Built 1955 Load: 28.1 t ADT: 24,031

I-5

Fair

Over: NOOKSACK RIVER

6.9 N JCT SR 539, Whatcom, WA

Built 1971 Load: 28.1 t ADT: 24,031

ROAD

Fair

Over: ROCKY CR

NO DATA ENTERED, Whatcom, WA

Built 1959 Load: 28.1 t ADT: 30

DELTA LINE RD

Fair

Over: DAKOTA CR

00.2 N JESS RD., Whatcom, WA

Built 1950 Load: 28.1 t ADT: 808

DEMING RD

Fair

Over: SMITH CREEK OVERFLOW

01.0 SE MT BAKER HY, Whatcom, WA

Built 1946 Load: 29.0 t ADT: 1,112

ROAD

Fair

Over: GLACIER CREEK

MP 2.9 RD #39, Whatcom, WA

Built 1966 Load: 29.1 t ADT: 64

ROAD

Fair

Over: CLEARWATER CREEK

NO DATA ENTERED, Whatcom, WA

Built 1968 Load: 29.1 t 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