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)

15TH AVE W

Fair

Over: SHILSHOLE AVE NW,

4300 15th Ave W, King, WA

Built 1940 Load: 24.5 t ADT: 52,000

S ALBRO PL

Fair

Over: AIRPORT WAY S, RR

S Albro Pl & Airport Way, King, WA

Built 1931 Load: 24.5 t ADT: 13,000

W GARFIELD ST

Fair

Over: BNRR

350 FT WEST OF 15TH AVE W, King, WA

Built 1930 Load: 24.5 t ADT: 20,000

SE 80TH ST

Fair

Over: KIMBALL CREEK

0.4 MI W OF SR-202, King, WA

Built 1929 Load: 24.6 t ADT: 398

I-5 SB

Fair

Over: TERRAIN

5.6 N JCT SR 900, King, WA

Built 1967 Load: 24.9 t ADT: 94,901

196TH AVE NE

Fair

Over: EVANS CREEK

0.9 MI N OF SR-202, King, WA

Built 1913 Load: 24.9 t ADT: 500

GRADY WAY

Fair

Over: UPRR & BNRR

0.1 MI E OF INTERURBAN, King, WA

Built 1986 Load: 24.9 t ADT: 26,000

I-5 SBCD

Fair

Over: TERRAIN

JCT I-90, King, WA

Built 1967 Load: 25.3 t ADT: 24,462

SE AUB-BLK DIA RD

Fair

Over: GREEN RIVER

0.2 MI NE OF SR-18, King, WA

Built 1970 Load: 25.3 t ADT: 8,871

SE 416TH ST

Fair

Over: NEWAUKUM CREEK

0.9 MI E OF SR-169, King, WA

Built 1958 Load: 25.3 t ADT: 1,874

WELLS AVENUE

Fair

Over: CEDAR RIVER

0.4 MI W OF I-405, King, WA

Built 1987 Load: 25.3 t ADT: 2,200

SR 202

Fair

Over: KIMBALL CR

4.5 E JCT SR 203, King, WA

Built 1924 Load: 25.4 t ADT: 11,250

SR 202

Fair

Over: S FK SNOQUALMIE R

7.7 E JCT SR 203, King, WA

Built 1936 Load: 25.4 t ADT: 11,250

US 2

Fair

Over: S FK SKYKOMISH RIVER

8.9 E SNOHOMISH CO, King, WA

Built 1938 Load: 25.4 t ADT: 5,198

SR 169

Fair

Over: CEDAR RIVER

0.8 N JCT SR 18, King, WA

Built 1950 Load: 25.4 t ADT: 21,491

US 2

Fair

Over: BN RR (GN) SCENIC

18.5 E SNOHOMISH CO, King, WA

Built 1990 Load: 25.4 t ADT: 4,827

300TH AVE SE

Fair

Over: PATTERSON CREEK

0.1 MI S OF SR-202, King, WA

Built 1951 Load: 25.4 t ADT: 10

148TH AVE SE

Fair

Over: SOOS CREEK

2.5 MI N OF SR-516, King, WA

Built 1971 Load: 25.4 t ADT: 4,306

SEATTLE BLVD

Fair

Over: SOUND TRANSIT TUNNEL

Seattle Blvd EO 4th Ave S, King, WA

Built 1910 Load: 25.4 t ADT: 22,000

12 AVE S

Fair

Over: DEARBORN ST

12th Ave S & Dearborn St, King, WA

Built 1917 Load: 25.4 t ADT: 22,000

EASTLAKE AVE NE

Fair

Over: NE PACIFIC ST

3800 Eastlake Ave, King, WA

Built 1930 Load: 25.4 t ADT: 35,000

EASTLAKE AVE NE

Fair

Over: NE 40TH ST, BURKE GILMAN

3800 Eastlake Ave, King, WA

Built 1930 Load: 25.4 t ADT: 37,000

196 - 200 STREET

Fair

Over: GREEN RIVER

0.8 MI W OF SR-18, King, WA

Built 1998 Load: 25.4 t ADT: 17,406

I-5

Fair

Over: TERRAIN

5.2 N JCT SR 900, King, WA

Built 1967 Load: 25.6 t ADT: 94,901

W NORTH BEND WAY

Fair

Over: RIBARY CREEK

3.1 MI E OF I-90, King, WA

Built 1941 Load: 25.6 t ADT: 6,500

WOODINVILLE DUVALL

Fair

Over: DUVALL SLOUGH

0.4 MI W OF SR-203, King, WA

Built 1948 Load: 25.9 t ADT: 10,564

SW SPOKANE ST

Fair

Over: E MARGINAL WAY S

1200 SW Spokane St, King, WA

Built 1983 Load: 25.9 t ADT: 10,000

SR 99

Fair

Over: N 63RD ST

9.8 N JCT SR 509, King, WA

Built 1932 Load: 26.3 t ADT: 32,577

US 2

Fair

Over: STREAM

5.8 E SNOHOMISH CO, King, WA

Built 1937 Load: 26.3 t ADT: 5,562

SR 203

Fair

Over: SLOUGH

15.8 N JCT SR 202, King, WA

Built 1945 Load: 26.3 t ADT: 10,190

4TH AVE S

Fair

Over: RAILROAD STATION

4th Ave S & Jackson St, King, WA

Built 1910 Load: 26.3 t ADT: 13,500

SW ADMIRAL WAY

Fair

Over: RAVINE, FAIRMOUNT AVE

4001 SW ADMIRAL WAY, King, WA

Built 1927 Load: 26.3 t ADT: 31,000

W. SNOQ VALLEY RD

Fair

Over: TUCK CREEK

JCT W SNOQ VALLEY RD, King, WA

Built 1999 Load: 26.6 t ADT: 5,973

SR 203

Fair

Over: HARRIS CREEK

8.2 N JCT SR 202, King, WA

Built 1945 Load: 27.2 t ADT: 9,561

US 2

Fair

Over: STREAM

7.0 E SNOHOMISH CO, King, WA

Built 1937 Load: 27.2 t ADT: 5,562

SR 18

Fair

Over: PEASLEY CANYON RD

1.9 E JCT I-5, King, WA

Built 1958 Load: 27.2 t ADT: 101,558

I-90

Fair

Over: S FK SNOQUALMIE R

6.3 E JCT SR 202, King, WA

Built 1974 Load: 27.2 t ADT: 18,182

S BOEING ACCESS RD

Fair

Over: BNRR

0.3 MI W OF E MARGINAL WY, King, WA

Built 1945 Load: 27.2 t ADT: 32,504

236TH AVE SE

Fair

Over: NEWAUKUM CREEK

0.5 MI N OF SR-164, King, WA

Built 1927 Load: 27.2 t ADT: 520

COVINGTON-SWYR RD

Fair

Over: JENKINS CREEK

0.7 MI SE OF SR-516, King, WA

Built 1929 Load: 27.2 t ADT: 15,015

15TH AVE NW

Fair

Over: NW LEARY WAY

15th Ave NW & NW Leary Wy, King, WA

Built 1958 Load: 27.2 t ADT: 60,000

W HOWE ST

Fair

Over: 32ND AVE W, RAVINE

3200 W Howe St, King, WA

Built 1946 Load: 27.2 t ADT: 2,300

1ST AVE S

Fair

Over: ARGO RR YARD

4500 1st Ave S, King, WA

Built 1935 Load: 27.2 t ADT: 19,000

148TH AVE SE

Fair

Over: SOOS CREEK

0.25 MI N OF SE 256TH ST, King, WA

Built 1971 Load: 27.5 t ADT: 2,300

FRONT ST N.

Fair

Over: E.FK.ISSAQUAH CK.

0.3 MI S OF I-90, King, WA

Built 1970 Load: 27.5 t ADT: 30,000

Redmond Way

Fair

Over: SAMMAMISH R

2.5 MI E JCT I-405, King, WA

Built 1972 Load: 27.9 t ADT: 27,000

I-90

Fair

Over: E FK ISSAQUAH CREEK

2.4 E JCT SR 900, King, WA

Built 1976 Load: 27.9 t ADT: 29,843

SR 167

Fair

Over: GREEN RIVER

4.7 N JCT SR 18, King, WA

Built 1967 Load: 28.1 t ADT: 65,366

SR 167

Fair

Over: GREEN RIVER

4.7 N JCT SR 18, King, WA

Built 1967 Load: 28.1 t ADT: 65,366

I-405 N-E RAMP

Fair

Over: SAMMAMISH RIVER

8.7 N JCT SR 520, King, WA

Built 1968 Load: 28.1 t ADT: 23,472

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.