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)

NOON RD

Good

Over: TEN MILE CREEK

01.1 N E. SMITH ROAD, Whatcom, WA

Built 2012 Load: 45.4 t ADT: 645

WICKERSHAM RD

Good

Over: SAMISH RIVER

00.4 E of Valley HWY, Whatcom, WA

Built 1998 Load: 45.7 t ADT: 159

HEMMI RD W

Good

Over: TEN MILE CR

00.3 E. ALDRICH RD., Whatcom, WA

Built 1986 Load: 46.3 t ADT: 441

MAIN ST

Good

Over: PEPIN CREEK

100' WEST OF DAHLIA ST, Whatcom, WA

Built 2022 Load: 46.3 t ADT: 6,100

FROST RD

Good

Over: SAAR CREEK

0.5 N SOUTH PASS ROAD, Whatcom, WA

Built 2004 Load: 46.7 t ADT: 118

LAKE WHATCOM BLVD

Good

Over: AUSTIN CREEK

00.2 LK LOUISE ROAD, Whatcom, WA

Built 2004 Load: 47.6 t ADT: 5,495

SR 542

Good

Over: OVERFLOW CHANNEL

9.9 E JCT I-5, Whatcom, WA

Built 1999 Load: 48.1 t ADT: 11,016

BAKER LK RD

Good

Over: SULPHUR CR

2.05 N SKAGIT LINE, Whatcom, WA

Built 2010 Load: 48.1 t ADT: 916

JAMES STREET

Good

Over: SQUALICUM CREEK

1 MI. N. OF SUNSET, Whatcom, WA

Built 2015 Load: 48.9 t ADT: 11,500

SR 539

Good

Over: FISHTRAP CREEK

2.7 N JCT SR 544, Whatcom, WA

Built 2008 Load: 49.0 t ADT: 16,600

MAIN STREET

Good

Over: FISHTRAP CREEK

0.2 W THIRD STREET, Whatcom, WA

Built 2014 Load: 49.0 t ADT: 6,039

SR 542

Good

Over: BOULDER CR

5.5 E JCT SR 547, Whatcom, WA

Built 2007 Load: 49.9 t ADT: 1,903

SR 539

Good

Over: TEN MILE CREEK

5.8 N JCT I-5, Whatcom, WA

Built 2008 Load: 50.8 t ADT: 19,199

SR 539

Good

Over: FOUR MILE CREEK

5.9 N JCT I-5, Whatcom, WA

Built 2008 Load: 50.8 t ADT: 19,199

SR 542

Good

Over: NOOKSACK TRIBUTARY

1.5 E JCT SR 9, Whatcom, WA

Built 2010 Load: 50.8 t ADT: 5,182

HANNEGAN RD

Good

Over: FOUR MILE CREEK

00.2 S BEARD RD., Whatcom, WA

Built 1954 Load: 50.8 t ADT: 9,411

SOUTH PASS RD

Good

Over: SAAR CREEK

01.3 SW KENDALL RD, Whatcom, WA

Built 2016 Load: 51.2 t ADT: 867

ROBERTS RD

Good

Over: ANDERSON CR

0.2 N of Goshen Road, Whatcom, WA

Built 2019 Load: 51.2 t ADT: 150

BRUCE RD

Good

Over: CALIFORNIA CR

00.2 N. BAY RD., Whatcom, WA

Built 1923 Load: 52.6 t ADT: 643

SR 542

Good

Over: HIGH CREEK

2.0 E JCT SR 547, Whatcom, WA

Built 2016 Load: 53.5 t ADT: 2,961

INNIS CREEK RD

Good

Over: INNIS CREEK

WEST HWY 9, Whatcom, WA

Built 2007 Load: 53.5 t ADT: 110

ROAD

Good

Over: SWAMP CREEK

NO DATA ENTERED, Whatcom, WA

Built 1984 Load: 53.6 t ADT: 80

SR 548

Good

Over: TERRELL CREEK

4.7 W JCT I-5, Whatcom, WA

Built 2011 Load: 54.4 t ADT: 5,048

ROAD

Good

Over: PARK CREEK

NO DATA ENTERED, Whatcom, WA

Built 1981 Load: 54.5 t ADT: 382

HANNEGAN RD

Good

Over: TEN MILE CREEK

0.2 N TEN MILE ROAD, Whatcom, WA

Built 2018 Load: 54.8 t ADT: 11,198

SR 9

Good

Over: BLACK SLOUGH

9.7 N SKAGIT CO, Whatcom, WA

Built 1952 Load: 55.3 t ADT: 3,307

NO DATA ENTERED

Good

Over: CANYON CREEK

MP 1.1 SINCE 1990, Whatcom, WA

Built 2007 Load: 55.4 t ADT: 50

VALENCIA STREET

Good

Over: WHATCOM CREEK

0.21 N JCT FRASER ST, Whatcom, WA

Built 2000 Load: 57.0 t ADT: 500

I-5

Good

Over: PADDEN CREEK

7.6 N SKAGIT CO, Whatcom, WA

Built 2021 Load: 60.3 t ADT: 21,720

ROAD #39

Good

Over: FALLS CREEK

5.4 MILES FROM SH #542, Whatcom, WA

Built 1996 Load: 60.8 t ADT: 20

I-5

Good

Over: PADDEN CREEK

7.6 N SKAGIT CO, Whatcom, WA

Built 2021 Load: 60.9 t ADT: 21,720

SR 9

Good

Over: TAWES CREEK

11.0 N SKAGIT CO, Whatcom, WA

Built 2019 Load: 62.2 t ADT: 3,307

SR 542

Good

Over: ANDERSON CREEK

6.5 E JCT I-5, Whatcom, WA

Built 2015 Load: 64.2 t ADT: 8,070

ROAD #39

Good

Over: GROUSE CREEK

7.9 MILES FROM SH #542, Whatcom, WA

Built 1996 Load: 64.5 t ADT: 20

SUNRISE RD

Good

Over: DAKOTA CR

00.4 N. JESS ROAD, Whatcom, WA

Built 2005 Load: 67.1 t ADT: 1,149

SUNRISE RD

Good

Over: S FORK DAKOTA CR

00.2 N. JESS ROAD, Whatcom, WA

Built 2005 Load: 67.1 t ADT: 1,149

LOOMIS TRAIL RD

Good

Over: DAKOTA CR

00.3 E SUNRISE ROAD, Whatcom, WA

Built 2006 Load: 78.9 t ADT: 604

SOUTH BAY DR

Good

Over: BRANNIAN CREEK

01.0 SW BLUE CANYON, Whatcom, WA

Built 2008 Load: 78.9 t ADT: 542

SR 9

Good

Over: LAKE WHATCOM RY

1.0 N SKAGIT CO, Whatcom, WA

Built 1989 Load: 89.8 t ADT: 2,122

MARTIN RD

Poor

Over: ANDERSON CR

00.2 E. ROBERTS RD, Whatcom, WA

Built 1958 Load: 6.3 t ADT: 80

JACKSON RD

Poor

Over: TERRELL CR

S OF BIRCH BAY DR., Whatcom, WA

Built 1975 Load: 14.6 t ADT: 1,037

GOSHEN RD

Poor

Over: ANDERSON CR

00.4 W. SAND RD, Whatcom, WA

Built 1973 Load: 18.5 t ADT: 1,114

MARINE DR

Poor

Over: ACCESS RD CREEK OLD RR

0.3 S BENNETT DR., Whatcom, WA

Built 1933 Load: 18.8 t ADT: 7,694

NB SR 539

Poor

Over: NOOKSACK R

2.0 N JCT SR 544, Whatcom, WA

Built 1950 Load: 20.0 t ADT: 8,300

MARINE DR

Poor

Over: G.N. RR

00.2 E WYNN RD, Whatcom, WA

Built 1940 Load: 20.1 t ADT: 5,805

SR 542

Poor

Over: GLACIER CREEK

10.6 E JCT SR 547, Whatcom, WA

Built 1956 Load: 22.7 t ADT: 1,251

ELECTRIC AVENUE

Poor

Over: WHATCOM CREEK

0.11 S JCT ALABAMA ST, Whatcom, WA

Built 1959 Load: 22.7 t ADT: 8,500

SALAKANUM WY

Poor

Over: ANDERSON CREEK

00.4 SO OF GOSHEN, Whatcom, WA

Built 1954 Load: 27.5 t ADT: 50

ROAD

Poor

Over: THOMPSON CREEK

MP 1.1 RD# 39, Whatcom, WA

Built 1966 Load: 40.0 t ADT: 64

LAKE SAMISH DR N

Structurally Deficient

Over: LAKE SAMISH

S END N LK SAMISH, Whatcom, WA

Built 1953 Load: 9.1 t ADT: 955

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