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

Poor

Over: BANDERA RD

14.9 E JCT SR 202, King, WA

Built 1972 Load: 33.6 t ADT: 18,144

EASTLAKE AVE NE

Poor

Over: PORTAGE BAY PL E

3200 Eastlake Ave, King, WA

Built 1930 Load: 36.3 t ADT: 36,000

I-90

Poor

Over: E FK ISSAQUAH CREEK

3.3 E JCT SR 900, King, WA

Built 1976 Load: 38.1 t ADT: 33,574

SR 167

Poor

Over: CMSTPP RR

0.8 N JCT SR 516, King, WA

Built 1967 Load: 39.9 t ADT: 59,986

I-90

Poor

Over: S FK SNOQUALMIE R

7.3 E JCT SR 202, King, WA

Built 1974 Load: 39.9 t ADT: 287

STOSSEL CK RD

Poor

Over: CHERRY CREEK

6.2 MI NE OF KELLY RD, King, WA

Built 1947 Load: 39.9 t ADT: 1,010

I-90

Poor

Over: BANDERA RD

14.9 E JCT SR 202, King, WA

Built 1972 Load: 43.5 t ADT: 18,144

HOMESTEAD VLLY RD

Poor

Over: S FK SNOQUALMIE RIVER

0.1 S JCT I-90, King, WA

Built 1974 Load: 45.4 t ADT: 200

I-90

Poor

Over: S FK SNOQUALMIE R

9.2 E JCT SR 202, King, WA

Built 1974 Load: 49.9 t ADT: 18,182

I-90

Poor

Over: GAME CROSSING

1.3 E JCT SR 18, King, WA

Built 1976 Load: 50.2 t ADT: 33,470

ROAD

Poor

Over: SNOW CREEK

1.1 MI W OF 54/50 JCT, King, WA

Built 1979 Load: 54.5 t ADT: 27

I-5

Poor

Over: LUCILE ST

3.9 N JCT SR 900, King, WA

Built 1966 Load: 61.7 t ADT: 95,134

I-90 WB

Poor

Over: SO FK SNOQULMIE R

21.2 E JCT SR 202, King, WA

Built 1971 Load: 66.2 t ADT: 16,891

2 AVE EXTEN S

Poor

Over: RAILROAD

2nd Ave S & Jackson, King, WA

Built 1928 Load: 96.9 t ADT: 13,700

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.