King County, WA

1,364 public highway bridges

King County Bridge Snapshot

King County, Washington contains 1,364 public highway bridges in the FHWA National Bridge Inventory. Roughly 31% are rated “Good,” 33.4% “Fair,” 3.3% “Poor,” and 3.3% 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.

1,364

Total Bridges

31%

Good

3.3%

Poor

3.3%

Structurally Deficient

Condition Distribution

Good

31% (423)

Fair

33.4% (456)

Poor

3.3% (45)

SD

3.3% (45)

All Bridges (1,364)

Sort:

SR 169

Over: GREEN R

5.3 N JCT SR 164, King, WA

Built 1932 Load: 21.8 t ADT: 11,098

SR 160

Over: PUGET SOUND @ FAUNTLEROY

3.0 W SR 509, King, WA

Built 1957 Load: 21.8 t ADT: 9,721

ROAD

Over: N FK SNOQUALMIE RIVER

NO DATA ENTERED, King, WA

Built 1964 Load: 21.8 t ADT: 9

229TH DRIVE SE

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

Over: KIMBALL CREEK

0.5 MI W OF SR-202, King, WA

Built 1960 Load: 21.8 t ADT: 11

HOUSER WAY

Over: CEDAR RIVER

0.1 MI E OF I-405, King, WA

Built 1960 Load: 21.8 t ADT: 17,000

SR 522 RAMP

Over: SAMMAMISH RIVER

1.3 E JCT SR 527, King, WA

Built 1968 Load: 22.0 t ADT: 9,413

SW SPOKANE ST

Over: KLICKITAT, E MARGINAL RR

1200 SW Spokane St, King, WA

Built 1991 Load: 22.0 t ADT: 11,000

SR 202

Over: PATTERSON CREEK

11.5 E JCT SR 520, King, WA

Built 1930 Load: 22.4 t ADT: 7,012

NE OLD CASCADE HWY

Over: S FORK SKYKOMISH RIVER

0.1 MI S OF SR-2, King, WA

Built 1957 Load: 22.4 t ADT: 343

PRIVATE ROAD

Over: GRANITE CREEK

5.1 MI N OF I-90, King, WA

Built 1967 Load: 22.4 t ADT: 25

SE MIDDLE FORK RD

Over: MIDDLE FORK SNOQUALMIE R

5.1 MI N OF I-90, King, WA

Built 1963 Load: 22.4 t ADT: 125

SR 203

Over: CREEK

3.0 N JCT SR 202, King, WA

Built 1945 Load: 22.7 t ADT: 7,622

SR 160

Over: PUGET SOUND

N END VASHON ISLAND, King, WA

Built 1993 Load: 22.7 t ADT: 2,635

ROAD

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

Over: MCALEER CREEK

0.12 MI SE OF SR-522, King, WA

Built 1949 Load: 22.7 t ADT: 600

SHORE DRIVE NE

Over: MCALEER CREEK

0.22 MI SE OF SR-522, King, WA

Built 1949 Load: 22.7 t ADT: 600

SW ADMIRAL WAY

Over: SCHMITZ BLVD, RAVINE

5500 SW Admiral Way, King, WA

Built 1935 Load: 22.7 t ADT: 12,500

ROOSEVELT WAY NE

Over: NE CAMPUS PARKWAY

4100 Roosevelt Way NE, King, WA

Built 1949 Load: 22.7 t ADT: 24,500

45TH AVE NE

Over: THORNTON CREEK

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

Built 1949 Load: 22.7 t ADT: 2,500

I-5

Over: NE 155TH ST

0.5 N JCT SR 523, King, WA

Built 1964 Load: 23.0 t ADT: 93,295

I-5

Over: NE 155TH ST

0.5 N JCT SR 523, King, WA

Built 1964 Load: 23.0 t ADT: 93,295

I-5 NB

Over: TERRAIN

5.8 N JCT SR 900, King, WA

Built 1966 Load: 23.0 t ADT: 94,901

I-5 RAMP

Over: TERRAIN

5.5 N JCT SR 900, King, WA

Built 1967 Load: 23.0 t ADT: 5,855

BEACON AVE S

Over: SO RYAN WY

0.5 MI E OF I-5, King, WA

Built 1971 Load: 23.0 t ADT: 379

KAMBER ROAD

Over: RICHARDS CREEK

SE 26th & 132nd, King, WA

Built 2005 Load: 23.0 t ADT: 9,709

I-5

Over: TERRAIN

2.4 N JCT I-90, King, WA

Built 1963 Load: 23.3 t ADT: 90,012

ROAD

Over: HOPE CREEK

NO DATA ENTERED, King, WA

Built 1980 Load: 23.3 t ADT: 2

VEAZIE-CUMBERLAND

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

Over: GARDINERS CREEK

0.9 MI W OF SR-202, King, WA

Built 1941 Load: 23.3 t ADT: 6,500

SR 202

Over: SNOQUALMIE RIVER

4.2 E JCT SR 203, King, WA

Built 1931 Load: 23.6 t ADT: 9,502

FERRY TRAFFIC

Over: PUGET SOUND @ TAHLEQUAH

SO. END VASHON IS, King, WA

Built 1954 Load: 23.6 t ADT: 1,106

FERRY TRAFFIC

Over: ELLIOTT BAY

W END MARION ST, King, WA

Built 1964 Load: 23.6 t ADT: 412

I-5

Over: KING-JACKSON ST

0.3 N JCT I-90, King, WA

Built 1965 Load: 23.6 t ADT: 69,913

FERRY TRAFFIC

Over: PUGET SOUND @ SEATTLE

W END MARION ST, King, WA

Built 1971 Load: 23.6 t ADT: 3,800

ROAD

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

Over: MCALEER CREEK

0.2 MI SE OF SR-522, King, WA

Built 1949 Load: 23.6 t ADT: 600

S-W RAMP

Over: SOUTHCENTER BLVD

5.2 N JCT SR 516, King, WA

Built 1965 Load: 23.7 t ADT: 14,215

SE 24TH ST

Over: WETLAND

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

Built 1968 Load: 23.7 t ADT: 6,000

FREMONT AVE N

Over: SHIP CANAL

3000 FREMONT AVE N, King, WA

Built 1917 Load: 23.7 t ADT: 29,300

STRANDER BLVD

Over: GREEN RIVER

0.1 MI W OF SR-181, King, WA

Built 1973 Load: 23.7 t ADT: 10,269

'R' ST SE

Over: STUCK RIVER

1.4 MI S OF SR-18, King, WA

Built 1967 Load: 24.0 t ADT: 19,500

OLD REDMOND ROAD

Over: 138th AVE NE

1.0 MI E OF I-405, King, WA

Built 1970 Load: 24.0 t ADT: 13,100

AVONDALE ROAD

Over: BEAR CREEK

.4 N JCT 520/202, King, WA

Built 1979 Load: 24.0 t ADT: 34,500

15TH ST NORTHWEST

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

Over: ARGO RR Yard

5200 Airport Way S, King, WA

Built 1928 Load: 24.3 t ADT: 17,500

364th Ave SE

Over: RAGING RIVER

6.8 MI E OF ISSA-HO, King, WA

Built 1996 Load: 24.3 t ADT: 150

5TH ST N

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

Over: TERRAIN

2.6 N JCT SR 900, King, WA

Built 1967 Load: 24.5 t ADT: 101,485

I-90

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.

Related

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial

Reviewed byPlainbridges Editorial, Plain Bridges Editorial Team · June 6, 2026