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)

SR 169

Fair

Over: GREEN R

5.3 N JCT SR 164, King, WA

Built 1932 Load: 21.8 t ADT: 11,098

SR 160

Fair

Over: PUGET SOUND @ FAUNTLEROY

3.0 W SR 509, King, WA

Built 1957 Load: 21.8 t ADT: 9,721

ROAD

Fair

Over: N FK SNOQUALMIE RIVER

NO DATA ENTERED, King, WA

Built 1964 Load: 21.8 t ADT: 9

229TH DRIVE SE

Fair

Over: ISSAQUAH CREEK

0.5 MI S OF SE MAY VLY RD, King, WA

Built 1983 Load: 21.8 t ADT: 90

SE 76TH ST

Fair

Over: KIMBALL CREEK

0.5 MI W OF SR-202, King, WA

Built 1960 Load: 21.8 t ADT: 11

HOUSER WAY

Fair

Over: CEDAR RIVER

0.1 MI E OF I-405, King, WA

Built 1960 Load: 21.8 t ADT: 17,000

SR 522 RAMP

Fair

Over: SAMMAMISH RIVER

1.3 E JCT SR 527, King, WA

Built 1968 Load: 22.0 t ADT: 9,413

SW SPOKANE ST

Fair

Over: KLICKITAT, E MARGINAL RR

1200 SW Spokane St, King, WA

Built 1991 Load: 22.0 t ADT: 11,000

SR 202

Fair

Over: PATTERSON CREEK

11.5 E JCT SR 520, King, WA

Built 1930 Load: 22.4 t ADT: 7,012

NE OLD CASCADE HWY

Fair

Over: S FORK SKYKOMISH RIVER

0.1 MI S OF SR-2, King, WA

Built 1957 Load: 22.4 t ADT: 343

PRIVATE ROAD

Fair

Over: GRANITE CREEK

5.1 MI N OF I-90, King, WA

Built 1967 Load: 22.4 t ADT: 25

SE MIDDLE FORK RD

Fair

Over: MIDDLE FORK SNOQUALMIE R

5.1 MI N OF I-90, King, WA

Built 1963 Load: 22.4 t ADT: 125

SR 203

Fair

Over: CREEK

3.0 N JCT SR 202, King, WA

Built 1945 Load: 22.7 t ADT: 7,622

SR 160

Fair

Over: PUGET SOUND

N END VASHON ISLAND, King, WA

Built 1993 Load: 22.7 t ADT: 2,635

ROAD

Fair

Over: S FK SNOQUALMIE RIVER

0.1 MI W OF 58/5830 JCT, King, WA

Built 1964 Load: 22.7 t ADT: 50

BEACH DRIVE NE

Fair

Over: MCALEER CREEK

0.12 MI SE OF SR-522, King, WA

Built 1949 Load: 22.7 t ADT: 600

SHORE DRIVE NE

Fair

Over: MCALEER CREEK

0.22 MI SE OF SR-522, King, WA

Built 1949 Load: 22.7 t ADT: 600

SW ADMIRAL WAY

Fair

Over: SCHMITZ BLVD, RAVINE

5500 SW Admiral Way, King, WA

Built 1935 Load: 22.7 t ADT: 12,500

ROOSEVELT WAY NE

Fair

Over: NE CAMPUS PARKWAY

4100 Roosevelt Way NE, King, WA

Built 1949 Load: 22.7 t ADT: 24,500

45TH AVE NE

Fair

Over: THORNTON CREEK

45th Ave NE & NE 97th St, King, WA

Built 1949 Load: 22.7 t ADT: 2,500

I-5

Fair

Over: NE 155TH ST

0.5 N JCT SR 523, King, WA

Built 1964 Load: 23.0 t ADT: 93,295

I-5

Fair

Over: NE 155TH ST

0.5 N JCT SR 523, King, WA

Built 1964 Load: 23.0 t ADT: 93,295

I-5 NB

Fair

Over: TERRAIN

5.8 N JCT SR 900, King, WA

Built 1966 Load: 23.0 t ADT: 94,901

I-5 RAMP

Fair

Over: TERRAIN

5.5 N JCT SR 900, King, WA

Built 1967 Load: 23.0 t ADT: 5,855

BEACON AVE S

Fair

Over: SO RYAN WY

0.5 MI E OF I-5, King, WA

Built 1971 Load: 23.0 t ADT: 379

KAMBER ROAD

Fair

Over: RICHARDS CREEK

SE 26th & 132nd, King, WA

Built 2005 Load: 23.0 t ADT: 9,709

I-5

Fair

Over: TERRAIN

2.4 N JCT I-90, King, WA

Built 1963 Load: 23.3 t ADT: 90,012

ROAD

Fair

Over: HOPE CREEK

NO DATA ENTERED, King, WA

Built 1980 Load: 23.3 t ADT: 2

VEAZIE-CUMBERLAND

Fair

Over: COAL CREEK

0.6 MI E OF SR-169, King, WA

Built 1950 Load: 23.3 t ADT: 3,189

W NORTH BEND WAY

Fair

Over: GARDINERS CREEK

0.9 MI W OF SR-202, King, WA

Built 1941 Load: 23.3 t ADT: 6,500

SR 202

Fair

Over: SNOQUALMIE RIVER

4.2 E JCT SR 203, King, WA

Built 1931 Load: 23.6 t ADT: 9,502

FERRY TRAFFIC

Fair

Over: PUGET SOUND @ TAHLEQUAH

SO. END VASHON IS, King, WA

Built 1954 Load: 23.6 t ADT: 1,106

FERRY TRAFFIC

Fair

Over: ELLIOTT BAY

W END MARION ST, King, WA

Built 1964 Load: 23.6 t ADT: 412

I-5

Fair

Over: KING-JACKSON ST

0.3 N JCT I-90, King, WA

Built 1965 Load: 23.6 t ADT: 69,913

FERRY TRAFFIC

Fair

Over: PUGET SOUND @ SEATTLE

W END MARION ST, King, WA

Built 1971 Load: 23.6 t ADT: 3,800

ROAD

Fair

Over: EAST FORK FOSS RIVER

0.5 MI S OF 68/6835 JCT, King, WA

Built 1959 Load: 23.6 t ADT: 60

45TH AVE NE

Fair

Over: MCALEER CREEK

0.2 MI SE OF SR-522, King, WA

Built 1949 Load: 23.6 t ADT: 600

S-W RAMP

Fair

Over: SOUTHCENTER BLVD

5.2 N JCT SR 516, King, WA

Built 1965 Load: 23.7 t ADT: 14,215

SE 24TH ST

Fair

Over: WETLAND

0.6 MI E OF 228TH AVE SE, King, WA

Built 1968 Load: 23.7 t ADT: 6,000

FREMONT AVE N

Fair

Over: SHIP CANAL

3000 FREMONT AVE N, King, WA

Built 1917 Load: 23.7 t ADT: 29,300

STRANDER BLVD

Fair

Over: GREEN RIVER

0.1 MI W OF SR-181, King, WA

Built 1973 Load: 23.7 t ADT: 10,269

'R' ST SE

Fair

Over: STUCK RIVER

1.4 MI S OF SR-18, King, WA

Built 1967 Load: 24.0 t ADT: 19,500

OLD REDMOND ROAD

Fair

Over: 138th AVE NE

1.0 MI E OF I-405, King, WA

Built 1970 Load: 24.0 t ADT: 13,100

AVONDALE ROAD

Fair

Over: BEAR CREEK

.4 N JCT 520/202, King, WA

Built 1979 Load: 24.0 t ADT: 34,500

15TH ST NORTHWEST

Fair

Over: BNRR & B ST NW

0.6 MI E JCT SR 167, King, WA

Built 1972 Load: 24.3 t ADT: 31,879

Airport Way S

Fair

Over: ARGO RR Yard

5200 Airport Way S, King, WA

Built 1928 Load: 24.3 t ADT: 17,500

364th Ave SE

Fair

Over: RAGING RIVER

6.8 MI E OF ISSA-HO, King, WA

Built 1996 Load: 24.3 t ADT: 150

5TH ST N

Fair

Over: S FK SKYKOMISH RIVER

0.1 S JCT US 2, King, WA

Built 1939 Load: 24.5 t ADT: 1,160

I-5 SOUTHBOUND

Fair

Over: TERRAIN

2.6 N JCT SR 900, King, WA

Built 1967 Load: 24.5 t ADT: 101,485

I-90

Fair

Over: 4TH AVE NW & TRAIL

1.0 E JCT SR 900, King, WA

Built 1971 Load: 24.5 t ADT: 30,913

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.