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

Fair

Over: S FK SNOQUALMIE R

17.3 E JCT SR 202, King, WA

Built 1971 Load: 39.0 t ADT: 17,937

I-90

Fair

Over: EAST CHANNEL-LK WASH

5.9 E JCT I-5, King, WA

Built 1988 Load: 39.0 t ADT: 61,610

SR 520

Fair

Over: NE 24TH ST

1.9 E JCT I-405, King, WA

Built 1998 Load: 39.0 t ADT: 43,146

N QUEEN ANNE DR

Fair

Over: RAVINE

Queen Anne Dr & 3rd Ave N, King, WA

Built 1935 Load: 39.0 t ADT: 125,000

I-5

Fair

Over: S 336TH ST

0.8 N JCT SR 18, King, WA

Built 1959 Load: 39.2 t ADT: 89,140

MARINE VIEW DR

Fair

Over: SALTWATER STATE PARK

2.6 MI NW OF JCT SR99, King, WA

Built 1934 Load: 39.9 t ADT: 3,507

I-5

Fair

Over: DUWAMISH R RR CITY ST

0.4 N JCT SR 599, King, WA

Built 1964 Load: 39.9 t ADT: 94,284

I-5

Fair

Over: DUWAMISH R RR CITY ST

0.4 N JCT SR 599, King, WA

Built 1964 Load: 39.9 t ADT: 94,284

I-405

Fair

Over: GREEN RIVER

0.9 N JCT I-5, King, WA

Built 1964 Load: 39.9 t ADT: 153,756

I-5

Fair

Over: TERRAIN

5.6 N JCT SR 900, King, WA

Built 1967 Load: 39.9 t ADT: 22,370

FERRY TRAFFIC

Fair

Over: PUGET SOUND @ SEATTLE

W END YESLER WAY, King, WA

Built 2019 Load: 40.2 t ADT: 10,212

NE MONEY CREEK RD

Fair

Over: MONEY CREEK

2.0 MI SOUTH OF SR 2, King, WA

Built 1958 Load: 40.5 t ADT: 30

I-90

Fair

Over: COUNTY ROAD(OLD I-90)

17.3 E JCT SR 202, King, WA

Built 1971 Load: 40.8 t ADT: 17,937

I-90

Fair

Over: RAGING RIVER

7.5 E JCT SR 900, King, WA

Built 1975 Load: 40.8 t ADT: 29,903

I-90

Fair

Over: E FK ISSAQUAH CR

2.6 E JCT SR 900, King, WA

Built 1976 Load: 40.8 t ADT: 33,574

EAST MARGINAL WAY

Fair

Over: DUWAMISH RIVER

0.14 N JCT INTERURBAN AVE, King, WA

Built 1989 Load: 40.8 t ADT: 13,500

COAL CREEK PKWY

Fair

Over: MAY CREEK

0.25 MI N OF SE 95TH WAY, King, WA

Built 2009 Load: 40.8 t ADT: 32,000

I-90

Fair

Over: DENNY CREEK

19.8 E JCT SR 202, King, WA

Built 1981 Load: 41.1 t ADT: 18,185

AVONDALE ROAD

Fair

Over: BEAR CREEK

4.7 MI E OF SR-405, King, WA

Built 1995 Load: 41.1 t ADT: 23,710

I-90 EB

Fair

Over: BUS DEPOT,PED PATH,BLDNS

0.2 W JCT I-5, King, WA

Built 2003 Load: 41.7 t ADT: 19,194

S LUCILE ST

Fair

Over: RR TRACKS

S Lucile St & Airport Way, King, WA

Built 1981 Load: 41.7 t ADT: 10,511

STARFIRE WAY

Fair

Over: GREEN RIVER

0.1 MI NW FORT DENT WAY, King, WA

Built 1975 Load: 42.4 t ADT: 1,150

I-5

Fair

Over: MILITARY RD

2.6 N JCT SR 18, King, WA

Built 1959 Load: 42.6 t ADT: 94,670

I-5

Fair

Over: MILITARY RD

4.4 N JCT SR 18, King, WA

Built 1960 Load: 42.6 t ADT: 94,670

I-90

Fair

Over: S FK SNOQUALMIE R

6.3 E JCT SR 202, King, WA

Built 1974 Load: 42.6 t ADT: 18,182

UNION HILL ROAD

Fair

Over: BEAR CREEK

0.1 W AVONDALE RD, King, WA

Built 1994 Load: 42.6 t ADT: 23,866

LAKE TAPPS PARKWAY

Fair

Over: E VALLEY HIGHWAY

LAKE TAPPS PKY @ E VALLEY, King, WA

Built 2003 Load: 42.6 t ADT: 17,243

SOUTHCENTER BLVD

Fair

Over: GREEN RIVER

0.12 MI E INTRURBAN AVE S, King, WA

Built 1994 Load: 43.1 t ADT: 10,616

I-5

Fair

Over: TERRAIN

4.5 N JCT SR 900, King, WA

Built 1966 Load: 43.5 t ADT: 120,321

SR 520 W-N RAMP

Fair

Over: NORTHUP WAY

JCT I-405, King, WA

Built 1993 Load: 43.5 t ADT: 12,263

51ST AVE SOUTH

Fair

Over: SOUTHCENTER BLVD

0.06 MI N SR-518 UC BR, King, WA

Built 1996 Load: 43.5 t ADT: 4,180

83RD AVE S

Fair

Over: CATTLE CROSSING

0.7 MI E OF SR-167, King, WA

Built 1990 Load: 43.7 t ADT: 18,758

SW 34TH STREET

Fair

Over: SPRINGBROOK CREEK

0.2 MI WEST LIND AVE, King, WA

Built 2007 Load: 43.7 t ADT: 1,900

DIABLO CAMP ROAD

Fair

Over: DIABLO TAILRACE

Diablo Powerhouse, King, WA

Built 1962 Load: 44.1 t ADT: 205

I-5

Fair

Over: TERRAIN

2.1 N JCT I-90, King, WA

Built 1962 Load: 44.4 t ADT: 10,636

I-5

Fair

Over: TERRAIN

2.1 N JCT I-90, King, WA

Built 1964 Load: 44.4 t ADT: 3,999

I-90

Fair

Over: BNRR (REMOVED)

3.0 E JCT SR 202, King, WA

Built 1976 Load: 44.4 t ADT: 20,098

I-90

Fair

Over: BNRR (REMOVED)

3.0 E JCT SR 202, King, WA

Built 1976 Load: 44.4 t ADT: 20,098

I-90

Fair

Over: EAST CHANNEL-LK WASH

5.9 E JCT I-5, King, WA

Built 1981 Load: 44.4 t ADT: 61,610

YESLER WAY

Fair

Over: 5TH AVE S

5th Ave S & Yesler Way, King, WA

Built 1912 Load: 44.4 t ADT: 7,215

CELL PHONE RAMP

Fair

Over: S 170TH

1 MI S OF SR 518, King, WA

Built 1972 Load: 44.4 t ADT: 4,300

WOODINVILLE DUVALL

Fair

Over: TUCK CREEK

0.9 MI W OF SR-203, King, WA

Built 1948 Load: 44.7 t ADT: 10,564

PACIFIC HIGHWAY

Fair

Over: DUWAMISH RIVER

0.1 MI N JCT SR599 & SR99, King, WA

Built 2000 Load: 44.7 t ADT: 22,406

LAKEMONT BLVD

Fair

Over: HILL SIDE

0.1 MI S OF JCT I-90, King, WA

Built 1998 Load: 44.7 t ADT: 16,261

SR 99

Fair

Over: CLOVERDALE ST

2.5 N JCT SR 599, King, WA

Built 1959 Load: 45.4 t ADT: 27,446

SR 520

Fair

Over: PEAT BOG

0.2 E JCT I-405, King, WA

Built 1993 Load: 45.4 t ADT: 32,129

INTERURBAN AVE S

Fair

Over: GREEN RIVER

0.1 N JCT I-405, King, WA

Built 1963 Load: 46.3 t ADT: 32,860

I-5 RAMP

Fair

Over: AIRPORT WAY S

5.9 N JCT SR 900, King, WA

Built 1967 Load: 46.3 t ADT: 3,824

W EMERSON ST

Fair

Over: RR TRACKS, ALLEY

1500 W Emerson St, King, WA

Built 1949 Load: 46.3 t ADT: 19,800

SHYBEAR WY NW

Fair

Over: WETLAND 1 TRIBUTARY

0.15 M S OF NW TALUS DR, King, WA

Built 2000 Load: 46.3 t ADT: 280

Read our methodology - how this data is sourced, computed, and verified.

Related

Browse all → | Rankings →
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.