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)

N 14TH STREET

Good

Over: FISHTRAP CREEK

AT GLENNING, Whatcom, WA

Built 2009 Load: 33.0 t ADT: 2,592

SR 542

Good

Over: SMITH CREEK

0.6 E JCT SR 9, Whatcom, WA

Built 1948 Load: 33.6 t ADT: 9,002

ROAD

Good

Over: THOMPSON CREEK

MP 1.0 RD #3910, Whatcom, WA

Built 1985 Load: 34.5 t ADT: 15

NO DATA ENTERED

Good

Over: BEAVER CREEK

NO DATA ENTERED, Whatcom, WA

Built 2010 Load: 35.0 t ADT: 50

NO DATA ENTERED

Good

Over: ANDERSON CREEK

NO DATA ENTERED, Whatcom, WA

Built 2014 Load: 35.0 t ADT: 50

ROAD

Good

Over: BOULDER CREEK

17.8 MILES EAST OF SR 20, Whatcom, WA

Built 1993 Load: 35.4 t ADT: 382

SR 11

Good

Over: PADDEN CREEK

7.0 N SKAGIT CO, Whatcom, WA

Built 2021 Load: 35.6 t ADT: 14,283

MOSQUITO LK RD

Good

Over: HUTCHINSON CR

03.1 E. VALLEY HWY, Whatcom, WA

Built 2005 Load: 35.6 t ADT: 818

OAT COLES RD

Good

Over: SWIFT CR

0.2 S. OF SOUTH PASS RD, Whatcom, WA

Built 2017 Load: 35.6 t ADT: 223

SR 542

Good

Over: NOOKSACK RIVER

9.7 E JCT I-5, Whatcom, WA

Built 1999 Load: 36.3 t ADT: 11,016

NB SR 539

Good

Over: WISER LAKE

0.9 N JCT SR 544, Whatcom, WA

Built 2009 Load: 36.3 t ADT: 8,382

CANYON CREEK #31

Good

Over: NO NAME CREEK

10.8 MILES FROM SH 542, Whatcom, WA

Built 1996 Load: 36.3 t ADT: 20

WICKERSHAM RD

Good

Over: NP RR

00.3 W INNIS CK RD, Whatcom, WA

Built 1955 Load: 37.2 t ADT: 159

SR 542

Good

Over: MCCAULEY CR

1.5 E JCT SR 9, Whatcom, WA

Built 1948 Load: 38.1 t ADT: 9,002

SR 542

Good

Over: MCCAULEY CREEK

1.7 E JCT SR 9, Whatcom, WA

Built 1948 Load: 38.1 t ADT: 8,221

SR 20

Good

Over: COLONIAL CREEK

13.4 E SKAGIT CO, Whatcom, WA

Built 1961 Load: 38.1 t ADT: 1,380

SR 542

Good

Over: COAL CREEK

12.9 E JCT SR 547, Whatcom, WA

Built 1971 Load: 38.1 t ADT: 1,251

NB I-5

Good

Over: INSPECTION LANES/BLDGS

0.2 N JCT SR 548, Whatcom, WA

Built 2009 Load: 38.1 t ADT: 1,143

BADGER RD W

Good

Over: BERTRAND CR

00.1 E AXLING RD, Whatcom, WA

Built 2019 Load: 38.2 t ADT: 2,988

SR 542

Good

Over: SLIDE AREA

20.4 E JCT SR 547, Whatcom, WA

Built 1994 Load: 38.9 t ADT: 1,251

LINDSAY RD

Good

Over: SUMAS RIVER

00.5 E FRICK RD, Whatcom, WA

Built 1993 Load: 38.9 t ADT: 263

SR 20

Good

Over: HORSETAIL CREEK

16.7 E SKAGIT CO, Whatcom, WA

Built 1968 Load: 39.0 t ADT: 1,380

SR 539

Good

Over: NOOKSACK RIVER

2.0 N JCT SR 544, Whatcom, WA

Built 2009 Load: 39.0 t ADT: 8,300

SR 539

Good

Over: NOOKSACK R OVERFLOW

2.5 N JCT SR 544, Whatcom, WA

Built 2009 Load: 39.0 t ADT: 16,600

ROAD #31

Good

Over: CANYON CREEK

7.5 MILES FROM SH 542, Whatcom, WA

Built 1996 Load: 39.0 t ADT: 50

LOOMIS TRAIL RD

Good

Over: SOUTH FORK DAKOTA CR

EAST OF N. ENTERPRISE RD, Whatcom, WA

Built 1950 Load: 39.2 t ADT: 1,500

ROAD

Good

Over: RANKIN CREEK

NO DATA ENTERED, Whatcom, WA

Built 2006 Load: 39.5 t ADT: 50

NOOKSACK RD

Good

Over: JOHNSON CR

0.27 N CLEARBROOK, Whatcom, WA

Built 1996 Load: 39.5 t ADT: 35

NORTHSHORE RD

Good

Over: SMITH CREEK

02.8 SE OF Y ROAD, Whatcom, WA

Built 1989 Load: 40.2 t ADT: 1,010

17th Ave.

Good

Over: DOUBLE DITCH CREEK

AT VILLAGE, Whatcom, WA

Built 2009 Load: 40.2 t ADT: 2,142

SR 542

Good

Over: N FORK NOOKSACK RIVER

12.5 E JCT SR 547, Whatcom, WA

Built 1963 Load: 40.8 t ADT: 1,251

BENDER RD

Good

Over: FISH TRAP CR

0.4 N DRAYTON ST, Whatcom, WA

Built 1992 Load: 41.5 t ADT: 5,445

POTTER RD

Good

Over: SOUTH FORK NOOKSACK

0.3 W HWY 9, Whatcom, WA

Built 2015 Load: 41.5 t ADT: 557

SLATER RD

Good

Over: JORDAN CREEK

0.1 west of Elder Road, Whatcom, WA

Built 2017 Load: 41.5 t ADT: 15,000

STATE ST, ELLIS ST

Good

Over: WHATCOM CREEK

100' N OF YORK ST, Whatcom, WA

Built 2022 Load: 41.5 t ADT: 10,360

SB SR 539

Good

Over: NOOKSACK R OVERFLOW

2.6 N JCT SR 544, Whatcom, WA

Built 2009 Load: 41.7 t ADT: 8,300

SR 11

Good

Over: PADDEN CREEK

6.3 N SKAGIT CO, Whatcom, WA

Built 2013 Load: 41.8 t ADT: 13,441

SR 9

Good

Over: S FK NOOKSACK RIVER

5.5 N SKAGIT CO, Whatcom, WA

Built 1987 Load: 42.6 t ADT: 2,122

SR 542

Good

Over: RAZORHONE CREEK

29.2 E JCT SR 547, Whatcom, WA

Built 1945 Load: 42.8 t ADT: 608

SR 542

Good

Over: HEDRICK CREEK

9.1 E JCT SR 547, Whatcom, WA

Built 2017 Load: 42.8 t ADT: 1,903

BAKER LAKE ROAD

Good

Over: SHANNON CREEK

NO DATA ENTERED, Whatcom, WA

Built 2004 Load: 43.2 t ADT: 150

I-5

Good

Over: TRANSMT. OIL PIPELINE

5.0 N JCT SR 539, Whatcom, WA

Built 1972 Load: 43.5 t ADT: 23,900

BRENTWOOD DR

Good

Over: NOOKSACK SLOUGH

0.04 MI. W. OF GILLIES RD, Whatcom, WA

Built 2023 Load: 43.7 t ADT: 600

SR 542

Good

Over: SMITH CREEK

1.3 E JCT SR 9, Whatcom, WA

Built 1948 Load: 44.4 t ADT: 9,002

SB SR 539

Good

Over: NOOKSACK R OVERFLOW

1.7 N JCT SR 544, Whatcom, WA

Built 2009 Load: 44.4 t ADT: 8,300

CLEARBROOK RD

Good

Over: JOHNSON CREEK

00.4 W NOOKSACK RD., Whatcom, WA

Built 2010 Load: 44.4 t ADT: 240

SR 542

Good

Over: GALLUP CREEK

10.5 E JCT SR 547, Whatcom, WA

Built 2010 Load: 45.4 t ADT: 1,869

ROAD # 3160

Good

Over: CANYON CREEK

RD 3160 MP 0.50, Whatcom, WA

Built 1985 Load: 45.4 t ADT: 10

STEIN RD

Good

Over: DAKOTA CREEK

00.1 S. LOOMIS TRAIL ROAD, Whatcom, WA

Built 2000 Load: 45.4 t ADT: 720

KOK ROAD

Good

Over: FISH TRAP CREEK

00.2 E GUIDE MERIDIAN, Whatcom, WA

Built 2012 Load: 45.4 t ADT: 6,791

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.