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)

Sort:

HAXTON WY

Over: RED RIVER

00.70 S OF SLATER, Whatcom, WA

Built 1920 Load: 29.8 t ADT: 5,592

FLYNN RD

Over: FISHTRAP CR

00.4 SW B.B. LYNDEN, Whatcom, WA

Built 1988 Load: 29.9 t ADT: 125

ROAD

Over: SWIFT CREEK

NO DATA ENTERED, Whatcom, WA

Built 1981 Load: 30.0 t ADT: 203

W. FRONT ST.

Over: JOHNSON CR

3.8 N JCT SR 546, Whatcom, WA

Built 1962 Load: 30.5 t ADT: 575

SR 20

Over: HALF BR STA 163

6.1 E SKAGIT CO, Whatcom, WA

Built 1962 Load: 30.8 t ADT: 1,732

NULLE RD

Over: FRIDAY CR

00.4 E W LK SAMISH, Whatcom, WA

Built 1934 Load: 31.1 t ADT: 851

I-5

Over: DAKOTA CR & WEST RD

7.9 N JCT SR 548, Whatcom, WA

Built 1961 Load: 31.7 t ADT: 7,554

I-5

Over: DAKOTA CR & WEST RD

7.9 N JCT SR 548, Whatcom, WA

Built 1961 Load: 31.7 t ADT: 7,554

ROAD

Over: WALLACE CREEK

NO DATA ENTERED, Whatcom, WA

Built 2002 Load: 32.2 t ADT: 12

SR 542

Over: MAPLE CREEK

3.3 E JCT SR 547, Whatcom, WA

Built 1900 Load: 32.7 t ADT: 1,937

FRONT STREET

Over: FISHTRAP CREEK

0.3 E SR539, Whatcom, WA

Built 1947 Load: 32.7 t ADT: 6,187

GRAND AVENUE

Over: WHATCOM CREEK

GRAND & WHATCOM CRK, Whatcom, WA

Built 1949 Load: 32.7 t ADT: 2,800

SR 20

Over: HALF BR STA 155

5.9 E SKAGIT CO, Whatcom, WA

Built 1900 Load: 33.6 t ADT: 1,732

SLATER RD

Over: NOOKSACK RIVER

02.43 W OF NW DR, Whatcom, WA

Built 1957 Load: 33.7 t ADT: 12,802

HAMPTON RD

Over: KAMM SLOUGH

01.6 W Northwood Road, Whatcom, WA

Built 2010 Load: 34.3 t ADT: 2,400

I-5

Over: WHATCOM CREEK

2.9 N JCT SR 11, Whatcom, WA

Built 1957 Load: 35.0 t ADT: 30,905

SR 20

Over: LILLIAN CR

19.8 E SKAGIT CO, Whatcom, WA

Built 1971 Load: 36.3 t ADT: 1,257

BIRCH BAY LYNDEN

Over: BERTRAND CR

00.3 W.RATHBONE RD., Whatcom, WA

Built 1949 Load: 36.3 t ADT: 8,369

BAKER LK RD

Over: SANDY CR

03.85 N SKAGIT LINE, Whatcom, WA

Built 1957 Load: 36.3 t ADT: 916

SR 542

Over: N FORK NOOKSACK RIVER

23.7 E JCT SR 547, Whatcom, WA

Built 1957 Load: 37.6 t ADT: 633

TURKINGTON RD

Over: MCCARTY CR

W HWY 9, Whatcom, WA

Built 1975 Load: 38.2 t ADT: 100

SR 20

Over: PANTHER CR

21.9 E SKAGIT CO, Whatcom, WA

Built 1972 Load: 39.0 t ADT: 1,257

NORTHWEST AVENUE

Over: SQUALLICUM WY,CRK,CMSTP&

1.5 NW. CITY HALL, Whatcom, WA

Built 1971 Load: 39.9 t ADT: 10,700

MARINE DR

Over: NOOKSACK RIVER

00.2 E FERNDALE RD., Whatcom, WA

Built 1936 Load: 40.5 t ADT: 3,900

SQUALLICUM WAY

Over: SQUALLICUM CREEK

BOX CUL 1 SQUALL WY, Whatcom, WA

Built 1970 Load: 40.5 t ADT: 4,200

SQUALLICUM WAY

Over: SQUALLICUM CREEK

BOX CUL 2 SQUALL WY, Whatcom, WA

Built 1970 Load: 40.5 t ADT: 4,200

SQUALLICUM WAY

Over: SQUALLICUM CREEK

BOX CUL 3 SQUALL WY, Whatcom, WA

Built 1970 Load: 40.5 t ADT: 4,200

I-5

Over: ORCHID DR/SQUALICUM CR

0.6 N JCT SR 542, Whatcom, WA

Built 1958 Load: 40.8 t ADT: 37,086

SR 542

Over: CHAIN UP CREEK

16.1 E JCT SR 547, Whatcom, WA

Built 2010 Load: 40.8 t ADT: 1,251

I-5

Over: ORCHID DR/SQUALICUM CR

0.6 N JCT SR 542, Whatcom, WA

Built 1958 Load: 41.7 t ADT: 37,086

SR 20

Over: THUNDER ARM BAY

13.8 E SKAGIT CO, Whatcom, WA

Built 1961 Load: 41.7 t ADT: 1,380

MASSEY RD

Over: SUMAS RIVER

00.2 E NOOKSACK RD., Whatcom, WA

Built 1950 Load: 42.1 t ADT: 326

GILES RD

Over: DAKOTA CR

.10 MI S OF MCGEE, Whatcom, WA

Built 1995 Load: 42.1 t ADT: 275

H STREET RD

Over: BERTRAND CR.

00.3 W JACKMAN RD., Whatcom, WA

Built 1995 Load: 42.8 t ADT: 1,248

WOBURN STREET

Over: WHATCOM CREEK

0.1 MI. S. IOWA ST., Whatcom, WA

Built 1989 Load: 43.4 t ADT: 11,900

SR 9

Over: SLOUGH

9.2 N SKAGIT CO, Whatcom, WA

Built 1952 Load: 45.4 t ADT: 3,307

NEWHALEM CAMPGROUN

Over: SKAGIT RIVER

100 feet South of Highway, Whatcom, WA

Built 1958 Load: 45.4 t ADT: 200

I-5

Over: WHATCOM CREEK

2.9 N JCT SR 11, Whatcom, WA

Built 1957 Load: 46.3 t ADT: 30,905

ROAD

Over: BAGLEY CREEK

NO DATA ENTERED, Whatcom, WA

Built 2007 Load: 46.3 t ADT: 50

DUPONT,PROSPECT ST

Over: WHATCOM CREEK

AT POST OFFICE, Whatcom, WA

Built 1920 Load: 46.3 t ADT: 8,700

CORNELL CREEK RD

Over: HENDRICKS CREEK

00.7 SE MTBAKER HWY, Whatcom, WA

Built 1967 Load: 47.2 t ADT: 62

SR 20

Over: GORGE CREEK

7.0 E SKAGIT CO, Whatcom, WA

Built 1955 Load: 49.9 t ADT: 1,732

ROAD

Over: MOROVITZ CREEK

NO DATA ENTERED, Whatcom, WA

Built 2009 Load: 55.4 t ADT: 50

ROAD

Over: ANDERSON CREEK

NO DATA ENTERED, Whatcom, WA

Built 2007 Load: 55.4 t ADT: 50

I-5

Over: LAKEWAY DRIVE

2.2 N JCT SR 11, Whatcom, WA

Built 1958 Load: 56.1 t ADT: 31,011

I-5

Over: LAKEWAY DRIVE

2.2 N JCT SR 11, Whatcom, WA

Built 1958 Load: 56.4 t ADT: 31,011

COMMERCIAL/YOUNG

Over: WHATCOM CREEK

COMMERCIAL/WHATCOM, Whatcom, WA

Built 1957 Load: 59.3 t ADT: 3,900

SMITH RD E

Over: ANDERSON CREEK

0.2 W OF SAND ROAD, Whatcom, WA

Built 2005 Load: 61.6 t ADT: 4,147

SR 20

Over: GOODELL CREEK

3.2 E SKAGIT CO, Whatcom, WA

Built 1972 Load: 63.5 t ADT: 1,732

SR 9

Over: CREEK

9.1 N SKAGIT CO, Whatcom, WA

Built 1952 Load: 65.3 t ADT: 3,307

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

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Compiled by PlainBridges, Independent data publisher

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.