Snohomish County, WA

516 public highway bridges

Snohomish County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Snohomish County, Washington contains 516 public highway bridges. Roughly 37.8% are rated “Good,” 37.8% “Fair,” and 3.7% “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.

516
Total Bridges
37.8%
Good
37.8%
Fair
3.7%
Poor Condition

Condition Distribution

Good
37.8% (195)
Fair
37.8% (195)
Poor
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.

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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.