Snohomish County, WA

516 public highway bridges

Snohomish County Bridge Snapshot

Snohomish County, Washington contains 516 public highway bridges in the FHWA National Bridge Inventory. Roughly 37.8% are rated “Good,” 37.8% “Fair,” 3.7% “Poor,” and 3.7% 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.

516
Total Bridges
37.8%
Good
3.7%
Poor
3.7%
Structurally Deficient

Condition Distribution

Good
37.8% (195)
Fair
37.8% (195)
Poor
3.7% (19)
SD
3.7% (19)

All Bridges (516)

TUALCO RD.

Good

Over: RILEY SLOUGH-SKYKOMISH R

1.4 SW JCT SR 203, Snohomish, WA

Built 2020 Load: 39.2 t ADT: 1,136

US 2

Good

Over: FARM RD & DRAIN DITCH

5.7 E JCT SR 9, Snohomish, WA

Built 1948 Load: 39.9 t ADT: 25,292

SR 204

Good

Over: EBEY SLOUGH

JCT US 2, Snohomish, WA

Built 1967 Load: 39.9 t ADT: 14,171

SR 530

Good

Over: FIRLAND CREEK

23.9 E JCT SR 9, Snohomish, WA

Built 1970 Load: 39.9 t ADT: 3,290

US 2

Good

Over: EAGLE FALLS CRK

24.1 E JCT SR 203, Snohomish, WA

Built 1986 Load: 39.9 t ADT: 5,659

US 2

Good

Over: EBEY SLOUGH DRAINAGE

2.2 E JCT I-5, Snohomish, WA

Built 1993 Load: 39.9 t ADT: 25,096

WHITES RD

Good

Over: JIM CREEK

5.3 SE JCT SR 530, Snohomish, WA

Built 1981 Load: 39.9 t ADT: 22

ROBE-MENZEL ROAD

Good

Over: COON CREEK

0.9 SE JCT SR 92, Snohomish, WA

Built 1997 Load: 39.9 t ADT: 2,473

SAUK PRAIRIE RD

Good

Over: TRIB. MOUSE CREEK

2.9 NE JCT SR 530, Snohomish, WA

Built 2004 Load: 39.9 t ADT: 712

SR 522 E-E RAMP

Good

Over: BNSF RR

JCT US 2, Snohomish, WA

Built 2011 Load: 40.2 t ADT: 7,191

SR 530

Good

Over: BOULDER CREEK

19.0 E JCT SR 9, Snohomish, WA

Built 1962 Load: 40.8 t ADT: 3,499

SR 9

Good

Over: STILLAGUAMISH R HALLER

0.2 N JCT SR 530, Snohomish, WA

Built 1999 Load: 40.8 t ADT: 8,312

WHITEMAN RD

Good

Over: WALLACE RIVER

0.5 NE JCT SR2, Snohomish, WA

Built 1988 Load: 40.8 t ADT: 306

OSO LOOP RD

Good

Over: N.F. STILLAGUAMISH RIVER

0.3 S JCT SR 530, Snohomish, WA

Built 1990 Load: 40.8 t ADT: 410

ALDERWOOD MALL BLV

Good

Over: CITY MAINT STORAGE

1.6 E JCT SR 99, Snohomish, WA

Built 2001 Load: 41.5 t ADT: 19,198

MANN RD

Good

Over: HAYSTACK CREEK

2.6 SE JCT SR2, Snohomish, WA

Built 2021 Load: 42.1 t ADT: 1,166

194TH ST SE

Good

Over: WETLAND

0.2 E JCT SR 527, Snohomish, WA

Built 2003 Load: 42.6 t ADT: 144

ROAD

Good

Over: EAST SAN JUAN CREEK

11.0 MI N OF HWY 2, Snohomish, WA

Built 1993 Load: 42.7 t ADT: 44

Crown Ridge Blvd.

Good

Over: Portage Creek

Crown Ridge Blvd., Snohomish, WA

Built 1999 Load: 42.8 t ADT: 3,600

ROAD # 6305

Good

Over: LEWIS CREEK

0.5 MI E OF 63/6305 JCT, Snohomish, WA

Built 1991 Load: 43.4 t ADT: 3

SR 529

Good

Over: BNRR

3.6 N JCT SR 529 SPUR, Snohomish, WA

Built 1993 Load: 43.5 t ADT: 5,671

SR 525

Good

Over: POSSESSION SOUND

1.9 N JCT SR 526, Snohomish, WA

Built 2020 Load: 43.7 t ADT: 13,078

ROAD

Good

Over: BOULDER CREEK

10.3 MI N OF HWY 2, Snohomish, WA

Built 1993 Load: 43.9 t ADT: 44

US 2

Good

Over: EBEY ISLAND

0.8 E JCT I-5, Snohomish, WA

Built 1999 Load: 44.4 t ADT: 39,701

SULTAN BASIN RD

Good

Over: OLNEY CREEK

11.1 NE JCT SR 2, Snohomish, WA

Built 1991 Load: 44.4 t ADT: 77

RD. NO. 24

Good

Over: NO NAME CREEK

M.P. 5.2 RD. NO. 24, Snohomish, WA

Built 1988 Load: 44.5 t ADT: 85

MAY CR RD

Good

Over: MAY CREEK

1.6 NE JCT SR2, Snohomish, WA

Built 2017 Load: 44.7 t ADT: 303

Locust Way

Good

Over: Swamp Creek

0.9 mi north King Co line, Snohomish, WA

Built 2016 Load: 45.0 t ADT: 11,359

I-405

Good

Over: 228TH ST

1.3 N KING CO, Snohomish, WA

Built 1968 Load: 45.4 t ADT: 45,734

SR 530

Good

Over: DEER CREEK

11.6 E JCT SR 9, Snohomish, WA

Built 1972 Load: 45.4 t ADT: 4,505

RD. NO. 23

Good

Over: STUJACK CREEK

M.P. 3.5 RD. NO. 23, Snohomish, WA

Built 2011 Load: 45.4 t ADT: 50

AIRPORT WAY

Good

Over: SNOHOMISH R.

1.1 N JCT SR#9, Snohomish, WA

Built 1983 Load: 45.4 t ADT: 16,383

SULTAN BASIN RD

Good

Over: OLNEY CREEK

7.2 NE JCT SR 2, Snohomish, WA

Built 1990 Load: 45.4 t ADT: 174

O.K. MILL RD

Good

Over: PILCHUCK RIVER

3.5 S JCT SR92, Snohomish, WA

Built 2005 Load: 45.4 t ADT: 8,197

Index-Galena Road

Good

Over: Howard Creek

9.0 NE JCT SR2, Snohomish, WA

Built 2017 Load: 45.4 t ADT: 31

ROAD

Good

Over: BECKLER RIVER

1.0 MI N O HYW 2/65 JCT, Snohomish, WA

Built 1988 Load: 45.8 t ADT: 114

SULTAN BASIN RD

Good

Over: BRANCH OLNEY CREEK

11.8 NE JCT SR 2, Snohomish, WA

Built 1991 Load: 47.2 t ADT: 100

236th St NE

Good

Over: Unnamed Stream

0.6 E JCT SR5, Snohomish, WA

Built 2022 Load: 47.3 t ADT: 6,201

124TH AVE NE

Good

Over: LAKE STEVENS OUTFLOW

0.01 S North Lksh Dr, Snohomish, WA

Built 1993 Load: 48.0 t ADT: 6,560

143RD PL NE

Good

Over: TRIB QUILCEDA CREEK

1.4 MI E INT I-5, Snohomish, WA

Built 1997 Load: 48.0 t ADT: 540

84TH ST NE

Good

Over: LITTLE PILCHUCK CREEK

1.1 W JCT SR 92, Snohomish, WA

Built 2006 Load: 48.0 t ADT: 10,540

5 TH ST - INDEX

Good

Over: N.F. SKYKOMISH RIVER

1.0 NE JCT SR 2, Snohomish, WA

Built 1999 Load: 48.1 t ADT: 842

O.K. MILL RD

Good

Over: DUBUQUE CREEK

3.6 SE JCT SR92, Snohomish, WA

Built 2005 Load: 48.1 t ADT: 8,197

SR 532

Good

Over: DAVIS SLOUGH

2.9 E ROUTE BEGIN, Snohomish, WA

Built 2015 Load: 48.9 t ADT: 20,742

SR 532

Good

Over: STILLAGUAMISH R / RR

0.5 E SNOHOMISH CO, Snohomish, WA

Built 2010 Load: 49.0 t ADT: 20,742

SR 9

Good

Over: EVERETT WATER MAIN

1.8 N JCT US 2, Snohomish, WA

Built 2009 Load: 49.0 t ADT: 20,638

INDEX-GALENA RD

Good

Over: LEWIS CREEK

2.2 NE JCT SR 2, Snohomish, WA

Built 2005 Load: 49.0 t ADT: 186

41st St.

Good

Over: BNSF RR & Maple St

0.1 E Jct I-5, Snohomish, WA

Built 2006 Load: 49.0 t ADT: 2,328

Riverfront BLVD

Good

Over: Bigelow Creek

0.5 mi SE JCT 1-5/41st, Snohomish, WA

Built 2012 Load: 49.6 t ADT: 1,286

US 2 RAMP

Good

Over: HEWITT AVENUE

4.4 N JCT SR 526, Snohomish, WA

Built 2006 Load: 49.9 t ADT: 24,682

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