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)

Sort:

I-90

Over: SR 18

12.2 E JCT SR 169, King, WA

Built 1963 ADT: 21,327

61ST AVE S

Over: I-405

0.3 N JCT I-5, King, WA

Built 1962 ADT: 108,408

SR 99

Over: SR 518 RIVERTON HTS

1.9 E JCT SR 509, King, WA

Built 1962 ADT: 51,803

I-5

Over: SR 104 / NE 205TH ST

1.3 E JCT SR 99, King, WA

Built 1963 ADT: 43,749

I-5

Over: SR 104 / NE 205TH ST

1.3 E JCT SR 99, King, WA

Built 1963 ADT: 43,749

I-5 NBCD

Over: SR 104

1.3 E JCT SR 99, King, WA

Built 1963 ADT: 43,749

MILITARY RD

Over: I-5

2.0 N JCT SR 516, King, WA

Built 1963 ADT: 209,875

S 208TH ST

Over: SR 167 & SPRINGBROOK CR

3.0 N JCT SR 516, King, WA

Built 1963 ADT: 109,316

S 180TH ST

Over: SR 167

4.8 N JCT SR 516, King, WA

Built 1964 ADT: 106,515

S 216TH ST

Over: I-5

1.1 N JCT SR 516, King, WA

Built 1963 ADT: 209,875

I-5

Over: ORILLIA RD/S 188TH ST

3.1 N JCT SR 516, King, WA

Built 1963 ADT: 29,582

I-5

Over: ORILLIA RD/S 188TH ST

3.1 N JCT SR 516, King, WA

Built 1963 ADT: 29,582

I-5 NB

Over: JAMES, CHERRY, REVERS

0.8 N JCT I-90, King, WA

Built 1964 ADT: 18,166

MADISON ST

Over: I-5

1.2 N JCT I-90, King, WA

Built 1964 ADT: 117,150

SPRING ST

Over: I-5

1.2 N JCT I-90, King, WA

Built 1964 ADT: 117,150

SENECA ST

Over: I-5

1.2 N JCT I-90, King, WA

Built 1964 ADT: 172,787

N-SENECA RAMP

Over: I-5 SB & CITY STREETS

1.2 N JCT I-90, King, WA

Built 1964 ADT: 86,394

SPRING ST RAMP

Over: I-5 SB COL

1.2 N JCT I-90, King, WA

Built 1964 ADT: 14,608

5TH AVE NE

Over: I-5, I-5 EXPRESS LANES

2.2 N JCT SR 520, King, WA

Built 1964 ADT: 165,473

NE 80TH ST

Over: I-5, I-5 EXP LNS, RAMPS

0.5 N JCT SR 522, King, WA

Built 1964 ADT: 149,488

NE 92ND ST

Over: I-5

0.5 N JCT SR 522, King, WA

Built 1964 ADT: 170,579

N-85TH RAMP

Over: I-5

0.5 N JCT SR 522, King, WA

Built 1964 ADT: 149,488

N 85TH TO SB I-5

Over: I-5 SB RAMP TO NE 80TH

0.5 N JCT SR 522, King, WA

Built 1964 ADT: 8,502

I-5

Over: N-103RD EXP RAMP

5.5 N JCT I-90, King, WA

Built 1964 ADT: 3,206

I-5

Over: SBCD NE110TH ST

2.0 N JCT SR 522, King, WA

Built 1964 ADT: 46,050

NP RY

Over: STATE ROUTE 202

0.3 E JCT SR 522, King, WA

Built 1963 ADT: 39,506

I-405

Over: SR 181

6.1 N JCT SR 516, King, WA

Built 1964 ADT: 32,968

NE117TH ST

Over: I-5

2.4 N JCT SR 522, King, WA

Built 1964 ADT: 204,832

NE 130TH ST

Over: I-5

3.1 N JCT SR 522, King, WA

Built 1964 ADT: 190,254

SR 523 / NE 145TH

Over: I-5

3.8 N JCT SR 522, King, WA

Built 1964 ADT: 166,801

I-5

Over: NE 175TH ST

1.6 N JCT SR 523, King, WA

Built 1964 ADT: 166,442

I-5

Over: NE 175TH ST

1.6 N JCT SR 523, King, WA

Built 1964 ADT: 166,442

NE 185TH ST

Over: I-5

2.6 N JCT SR 523, King, WA

Built 1964 ADT: 180,670

NE 195TH ST PED

Over: I-5, RAMPS

2.6 N JCT SR 523, King, WA

Built 1964 ADT: 155,748

I-405

Over: SR 167

6.7 N JCT SR 516, King, WA

Built 1964 ADT: 91,692

I-405

Over: SR 515

6.9 N JCT SR 516, King, WA

Built 1964 ADT: 46,318

S178TH ST

Over: I-5

4.0 N JCT SR 516, King, WA

Built 1964 ADT: 224,903

KLICKITAT DR

Over: I-5

5.0 N JCT SR 516, King, WA

Built 1964 ADT: 112,452

I-5

Over: I-405 NB / SR 518 EB

0.1 N JCT I-5, King, WA

Built 1966 ADT: 36,699

I-5

Over: I-405 NB / SR 518 EB

JCT I-5, King, WA

Built 1966 ADT: 36,699

I-5

Over: E-N RAMP

1.1 E JCT SR 99, King, WA

Built 1965 ADT: 14,537

N-W RAMP

Over: I-405, E-N, S-N RAMPS

0.1 N JCT I-5, King, WA

Built 1966 ADT: 54,204

RAMP I-5 TO I-405

Over: RAMP SR 518 TO I-5

1.1 E JCT SR 99, King, WA

Built 1966 ADT: 14,537

I-405

Over: I-5

5.2 N JCT SR 516, King, WA

Built 1965 ADT: 224,903

51ST AVE S

Over: SR 518

1.0 E JCT SR 99, King, WA

Built 1966 ADT: 109,319

8TH AVE

Over: I-5

1.2 N JCT I-90, King, WA

Built 1964 ADT: 172,787

UNIV-N RAMP

Over: I-5

1.2 N JCT I-90, King, WA

Built 1965 ADT: 86,394

PIKE ST

Over: I-5

1.5 N JCT I-90, King, WA

Built 1964 ADT: 195,009

PINE ST-BOREN AVE

Over: I-5

1.6 N JCT I-90, King, WA

Built 1965 ADT: 195,009

MILITARY ROAD

Over: S-W RAMP TO S 188TH ST

3.3 N JCT SR 516, King, WA

Built 1964 ADT: 3,684

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

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