Whatcom County, WA

358 public highway bridges

Whatcom County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Whatcom County, Washington contains 358 public highway bridges. Roughly 38.3% are rated “Good,” 46.6% “Fair,” and 5.3% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

358
Total Bridges
38.3%
Good
46.6%
Fair
5.3%
Poor Condition

Condition Distribution

Good
38.3% (137)
Fair
46.6% (167)
Poor
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.

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Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.