King County, WA

1,364 public highway bridges

King County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, King County, Washington contains 1,364 public highway bridges. Roughly 31% are rated “Good,” 33.4% “Fair,” and 3.3% “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.

1,364
Total Bridges
31%
Good
33.4%
Fair
3.3%
Poor Condition

Condition Distribution

Good
31% (423)
Fair
33.4% (456)
Poor
3.3% (45)

All Bridges (1,364)

W-N I-90 RAMP

Good

Over: PEDESTRIAN-BIKE PATH

0.6 E JCT I-5, King, WA

Built 1988 Load: 53.5 t ADT: 7,337

I-90 EB

Good

Over: TALAPUS CREEK

15.6 E JCT SR 202, King, WA

Built 1972 Load: 53.5 t ADT: 18,193

SE 244 ST

Good

Over: SOOS CREEK

2.25 MI N OF SR-516, King, WA

Built 2009 Load: 53.8 t ADT: 4,883

SR 18

Good

Over: CAREY CR TRIB

3.9 E JCT SR 169, King, WA

Built 1996 Load: 54.4 t ADT: 15,143

SR 18

Good

Over: SOOS CREEK

6.7 E JCT SR 164, King, WA

Built 1996 Load: 54.4 t ADT: 25,223

SR 18 RAMP

Good

Over: SOOSETTE CREEK

4.7 E JCT SR 164, King, WA

Built 1997 Load: 54.4 t ADT: 5,784

SR 18

Good

Over: JENKINS CREEK

2.1 E JCT SR 516, King, WA

Built 2002 Load: 54.4 t ADT: 19,491

SR 202

Good

Over: DETENTION VAULT

1.9 E JCT SR 520, King, WA

Built 2007 Load: 54.4 t ADT: 14,392

SR 202

Good

Over: EVANS CREEK

2.4 E JCT SR 520, King, WA

Built 2006 Load: 54.4 t ADT: 29,736

172ND AVE SE

Good

Over: SOOS CREEK

1.7 MI N OF SR-18, King, WA

Built 2009 Load: 54.8 t ADT: 1,150

SE SUMMIT LANDSBUR

Good

Over: ROCK CREEK

0.5 MI N OF SR169, King, WA

Built 2022 Load: 55.1 t ADT: 1,200

Veterans Dr.

Good

Over: GREEN RIVER

2.0 MI E OF I-5, King, WA

Built 2006 Load: 55.4 t ADT: 5,200

SR 202

Good

Over: PATTERSON CRK EAST TRIB

12.0 E JCT SR 520, King, WA

Built 2020 Load: 56.1 t ADT: 12,172

WB SR 18 TO 304TH

Good

Over: SOOSETTE CREEK

4.7 E JCT SR 164, King, WA

Built 1997 Load: 56.2 t ADT: 3,745

E-S RAMP

Good

Over: BUILDING, PARKING LOT

0.2 W JCT I-90, King, WA

Built 2003 Load: 56.2 t ADT: 4,000

SR 18

Good

Over: TAYLOR CREEK

1.4 E JCT SR 169, King, WA

Built 2006 Load: 56.2 t ADT: 16,302

SR 202

Good

Over: EVANS CREEK

1.7 E JCT SR 520, King, WA

Built 2007 Load: 56.2 t ADT: 29,749

SR 202

Good

Over: DETENTION VAULT

2.0 E JCT SR 520, King, WA

Built 2007 Load: 56.2 t ADT: 14,868

SR 509

Good

Over: DES MOINES CK/MEM TRAIL

0.8 N JCT SR 516, King, WA

Built 2007 Load: 56.2 t ADT: 18,248

292ND AVE SE

Good

Over: PATTERSON CREEK

.03 MI S OF SR-202, King, WA

Built 2012 Load: 56.7 t ADT: 7,269

US 2

Good

Over: STREAM

0.7 E SNOHOMISH CO, King, WA

Built 1986 Load: 57.1 t ADT: 5,648

I-5

Good

Over: KLICKITAT DRIVE

5.0 N JCT SR 516, King, WA

Built 1998 Load: 57.1 t ADT: 18,644

US 2

Good

Over: TYE RIVER

14.6 E SNOHOMISH CO, King, WA

Built 1998 Load: 57.1 t ADT: 4,871

284TH AVE. SE

Good

Over: NEWAUKUM CREEK

1.0 MI W OF SR-169, King, WA

Built 2012 Load: 57.1 t ADT: 2,855

NE CARN. FARM RD

Good

Over: SLOUGH

0.6 MI W OF SR-203, King, WA

Built 1997 Load: 57.3 t ADT: 1,259

WOODINVILLE DUVALL

Good

Over: TUCK CREEK

1.9 Mi W of SR-203, King, WA

Built 2023 Load: 57.3 t ADT: 10,500

SR 518

Good

Over: 42ND AVE S

0.4 E JCT SR 99, King, WA

Built 1963 Load: 58.0 t ADT: 60,822

SR 18

Good

Over: CAREY CR TRIB

3.9 E JCT SR 169, King, WA

Built 1995 Load: 58.0 t ADT: 15,143

SR 18

Good

Over: TAYLOR CREEK

1.4 E JCT SR 169, King, WA

Built 2005 Load: 58.0 t ADT: 16,302

US 2

Good

Over: BEAVER CREEK

2.0 E SNOHOMISH CO, King, WA

Built 1986 Load: 59.0 t ADT: 5,562

SR 18

Good

Over: 244TH AVE SE

1.2 E JCT SR 169, King, WA

Built 2006 Load: 59.0 t ADT: 16,302

EB SR 18 ON RAMP

Good

Over: TAYLOR CREEK

1.4 E JCT SR 169, King, WA

Built 2006 Load: 59.0 t ADT: 471

428TH AVE SE

Good

Over: MIDDLE FORK SNOQUALMIE R

2.1 MI E OF SR 202, King, WA

Built 1984 Load: 59.0 t ADT: 1,226

NE CARN. FARM RD

Good

Over: SLOUGH

0.2 MI W OF SR-203, King, WA

Built 1998 Load: 59.6 t ADT: 1,259

SR 202 WB

Good

Over: EVANS CREEK

2.4 E JCT SR 520, King, WA

Built 2006 Load: 59.9 t ADT: 14,868

120TH AVE NE

Good

Over: SOUND TRANSIT LIGHT RAIL

0.19 N NE 12TH ST, King, WA

Built 2017 Load: 60.3 t ADT: 5,298

364th Ave SE

Good

Over: Raging River

5.0 MI E OF ISSA-HO RD, King, WA

Built 2014 Load: 61.6 t ADT: 150

US 2

Good

Over: STREAM

3.1 E SNOHOMISH CO, King, WA

Built 1988 Load: 61.7 t ADT: 5,562

W SNO VALLEY RD

Good

Over: DRAINAGE DITCH

2.1 MI E OF SR-203, King, WA

Built 2016 Load: 61.9 t ADT: 660

RAMP

Good

Over: SHARED USE PATH

JCT SR 202, King, WA

Built 2023 Load: 62.9 t ADT: 26,910

NE 124TH ST

Good

Over: SAMMAMISH RIVER

0.5 MI W OF SR-202, King, WA

Built 2004 Load: 62.9 t ADT: 25,500

SR 18

Good

Over: SE 240TH ST

3.5 E JCT SR 516, King, WA

Built 2002 Load: 63.5 t ADT: 19,491

SR 18

Good

Over: 244TH AVE SE

1.2 E JCT SR 169, King, WA

Built 2005 Load: 63.5 t ADT: 395

264TH AVE SE

Good

Over: PATTERSON CREEK

0.1 MI S OF SR-202, King, WA

Built 2008 Load: 64.2 t ADT: 171

NE UNION HILL RD.

Good

Over: EVANS CREEK

2.5 MI E OF SR-202, King, WA

Built 2013 Load: 64.5 t ADT: 12,178

NB AIRPORT EXPY

Good

Over: SUBSTATION

1.0 MI S OF SR 518, King, WA

Built 2010 Load: 64.8 t ADT: 43,000

HOLMAN RD NW

Good

Over: 8TH AVE NW

Holman Rd NW & 8th Ave NW, King, WA

Built 1975 Load: 66.2 t ADT: 30,500

SE LAKE WALKER RD

Good

Over: COAL CREEK

3.5 MI W OF SR-169, King, WA

Built 2023 Load: 68.7 t ADT: 350

US 2

Good

Over: ALPINE CREEK

13.7 E SNOHOMISH CO, King, WA

Built 1998 Load: 68.9 t ADT: 4,915

SE MAY VALLEY ROAD

Good

Over: MAY CREEK

0.1 MI E OF SR-900, King, WA

Built 2010 Load: 70.3 t ADT: 6,018

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.