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)

I-90

Good

Over: FRONT STREET

1.3 E JCT SR 900, King, WA

Built 1971 Load: 12.0 t ADT: 30,913

SR 167

Good

Over: RAILROAD & PED TRAIL

0.8 N JCT SR 516, King, WA

Built 1967 Load: 13.3 t ADT: 59,986

SE 86TH STREET

Good

Over: RAGING RIVER

0.1 MI E OF PRSTN-FALL RD, King, WA

Built 2003 Load: 13.3 t ADT: 210

I-405

Good

Over: 115th AVE NE & TRAIL

0.2 N JCT SR 520, King, WA

Built 1965 Load: 14.6 t ADT: 65,986

E LAKE SAMMAMISH

Good

Over: DRAINAGE DITCH

0.5 M N OF INGLEWOOD, King, WA

Built 1961 Load: 14.6 t ADT: 23,000

I-405

Good

Over: PEDESTRIAN TRAIL

5.2 N JCT SR 520, King, WA

Built 1956 Load: 15.2 t ADT: 80,878

I-90

Good

Over: GARCIA INTERCHANGE

6.5 E JCT SR 202, King, WA

Built 1974 Load: 15.6 t ADT: 18,182

SR 18

Good

Over: UP RR

0.6 E JCT SR 167, King, WA

Built 1972 Load: 16.2 t ADT: 49,308

SR 160

Good

Over: PUGET SOUND @ PT VASHON

N END VASHON ISLAND, King, WA

Built 1997 Load: 16.3 t ADT: 4,675

SR 160

Good

Over: PUGET SOUND @ FAUNTLEROY

3.0 W SR 509, King, WA

Built 1984 Load: 16.3 t ADT: 9,721

328 WAY SE

Good

Over: RAGING RIVER

300 FT N OF FALL CITY RD, King, WA

Built 1998 Load: 16.5 t ADT: 1,563

US 2

Good

Over: TUNNEL CREEK

19.8 E SNOHOMISH CO, King, WA

Built 1941 Load: 16.8 t ADT: 2,414

168TH WAY SE

Good

Over: COVINGTON CREEK

2.7 MI E OF SR-18, King, WA

Built 1964 Load: 16.8 t ADT: 1,080

SR 522

Good

Over: E-N RAMP BR

1.3 E JCT SR 527, King, WA

Built 1968 Load: 17.2 t ADT: 1,600

I-90

Good

Over: SO FK SNOQUALMIE R

9.2 E JCT SR 202, King, WA

Built 1976 Load: 17.5 t ADT: 18,182

72ND AVE SE

Good

Over: FIRST HILL LID

3.4 E JCT I-5, King, WA

Built 1992 Load: 17.8 t ADT: 2,472

SR 202

Good

Over: SAMMAMISH R

2.5 E JCT SR 522, King, WA

Built 1955 Load: 18.1 t ADT: 8,751

I-5

Good

Over: SOUTHCENTER BLVD

5.2 N JCT SR 516, King, WA

Built 1965 Load: 18.1 t ADT: 112,452

SR 181

Good

Over: MILL CREEK

3.0 N JCT SR 516, King, WA

Built 1922 Load: 18.1 t ADT: 30,041

I-405

Good

Over: MAY CREEK

1.8 N JCT SR 900, King, WA

Built 1958 Load: 18.5 t ADT: 72,796

SR 18

Good

Over: BNSF RR SPUR

0.8 E JCT SR 164, King, WA

Built 1960 Load: 18.8 t ADT: 30,974

SR 520

Good

Over: PEDESTRIAN TRAIL

0.2 E JCT I-405, King, WA

Built 1966 Load: 19.8 t ADT: 43,146

SR 202

Good

Over: TOKUL CREEK

2.7 E JCT SR 203, King, WA

Built 1984 Load: 19.8 t ADT: 9,502

SR 181

Good

Over: SLOUGH

2.8 N JCT SR 516, King, WA

Built 1922 Load: 20.1 t ADT: 30,041

REDMOND WAY

Good

Over: 154TH AVE NE

2.5 MI E JCT I-405, King, WA

Built 1992 Load: 20.4 t ADT: 27,000

EB I-90

Good

Over: LAKE WASHINGTON

3.8 E JCT I-5, King, WA

Built 1940 Load: 20.7 t ADT: 63,053

SR 509

Good

Over: 1ST AVE S

5.0 N PIERCE CO, King, WA

Built 1961 Load: 20.9 t ADT: 12,030

SE NORTH BEND WAY

Good

Over: KIMBALL CREEK

0.5 MI N OF I-90, King, WA

Built 1941 Load: 20.9 t ADT: 5,809

NW 57TH ST

Good

Over: RR TRACK

NW 57th Pl & NW 57th St, King, WA

Built 1986 Load: 20.9 t ADT: 730

W FORT ST

Good

Over: RAILROAD

W FORT ST & GILMAN AVE W, King, WA

Built 1986 Load: 20.9 t ADT: 1,600

US 2

Good

Over: TYE RIVER

18.1 E SNOHOMISH CO, King, WA

Built 1947 Load: 21.4 t ADT: 4,827

EXP N TO 42ND RAMP

Good

Over: PASADENA PL NE

4.6 N JCT I-90, King, WA

Built 1962 Load: 21.4 t ADT: 2,542

US 2

Good

Over: BNRR

2.3 E SNOHOMISH CO, King, WA

Built 1986 Load: 21.4 t ADT: 5,562

468TH AVE SE

Good

Over: S FK SNOQUALMIE RIVER

1.0 MI S OF I-90, King, WA

Built 2004 Load: 21.4 t ADT: 1,510

I-405

Good

Over: PEDESTRIAN TRAIL

5.2 N JCT SR 520, King, WA

Built 1970 Load: 21.7 t ADT: 80,878

I-90

Good

Over: E FK ISSAQUAH CREEK

2.2 E JCT SR 900, King, WA

Built 1976 Load: 21.7 t ADT: 29,843

NORTH CREEK PKWY

Good

Over: NORTH CREEK

0.5 E SR 405, King, WA

Built 1984 Load: 21.7 t ADT: 6,593

16TH AVE SW

Good

Over: KLICKITAT AVE SW, RR

16th Ave SW & Klickitat, King, WA

Built 2001 Load: 21.7 t ADT: 9,000

FERRY TRAFFIC

Good

Over: PUGET SOUND @ SEATTLE

W END MARION ST, King, WA

Built 1990 Load: 21.8 t ADT: 10,212

NORTH CREEK PKWY

Good

Over: NORTH CREEK

0.5 E SR-405, King, WA

Built 1984 Load: 21.8 t ADT: 4,641

8TH AVE NW

Good

Over: RAVINE

8th Ave NW S/O NW Elford, King, WA

Built 1950 Load: 21.8 t ADT: 1,150

MONTE VILLA PRKWAY

Good

Over: NORTH CREEK

0.2 E I405, King, WA

Built 1994 Load: 21.8 t ADT: 3,064

HOMESTEAD VLY RD

Good

Over: CHANGE CREEK

0.8 SE JCT I-90, King, WA

Built 1928 Load: 22.0 t ADT: 257

I-405

Good

Over: NORTH CREEK

0.6 N JCT SR 522, King, WA

Built 1968 Load: 22.4 t ADT: 104,974

I-90

Good

Over: RICHARDS RD

0.2 E JCT I-405, King, WA

Built 1968 Load: 22.7 t ADT: 63,853

SR 509

Good

Over: GLENDALE WAY

2.3 N JCT SR 518, King, WA

Built 1968 Load: 22.7 t ADT: 47,151

I-405

Good

Over: NORTHUP WAY

0.1 N JCT SR 520, King, WA

Built 1954 Load: 23.0 t ADT: 65,986

N.E. DOGWOOD ST.

Good

Over: E.FK. ISSAQUAH CK.

0.1 MI W OF I-90, King, WA

Built 1996 Load: 23.0 t ADT: 1,200

FREMONT AVE N

Good

Over: ACCESS RD, PARKING

3400 Fremont Ave N, King, WA

Built 2009 Load: 23.0 t ADT: 34,000

ROAD

Good

Over: FOSS RIVER

5.7 MI S OF HWY 2/68 JCT, King, WA

Built 1962 Load: 23.6 t ADT: 156

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.