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)

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.

Related

Browse all → | Rankings →
Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial