Snohomish County, WA

516 public highway bridges

Snohomish County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Snohomish County, Washington contains 516 public highway bridges. Roughly 37.8% are rated “Good,” 37.8% “Fair,” and 3.7% “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.

516

Total Bridges

37.8%

Good

37.8%

Fair

3.7%

Poor Condition

Condition Distribution

Good

37.8% (195)

Fair

37.8% (195)

Poor

3.7% (19)

All Bridges (516)

Sort:

SAUK PRAIRIE RD

Over: DAN CREEK

2.9 NE JCT SR 530, Snohomish, WA

Built 1971 Load: 21.8 t ADT: 574

84 TH AVE W

Over: CHASE LAKE

0.6 SW JCT SR 99, Snohomish, WA

Built 1968 Load: 21.8 t ADT: 4,386

233RD PL S.E.

Over: BEAR CREEK

0.1 W JCT SR 9, Snohomish, WA

Built 1973 Load: 21.8 t ADT: 4,650

HEVLY RD

Over: STILLAGUAMISH SLOUGH

0.8 NE SR530, Snohomish, WA

Built 2005 Load: 21.8 t ADT: 71

MENZEL LAKE RD.

Over: PILCHUCK RIVER

6.0 SE JCT SR 92, Snohomish, WA

Built 1956 Load: 22.0 t ADT: 1,076

SR 96

Over: FARM STORAGE

4.0 E JCT SR 527, Snohomish, WA

Built 1970 Load: 22.0 t ADT: 3,024

I-5

Over: STILLAGUAMISH RIVER

0.7 N JCT SR 530, Snohomish, WA

Built 1933 Load: 22.7 t ADT: 43,620

US 2

Over: WOODS CREEK

0.4 E JCT SR 203, Snohomish, WA

Built 1950 Load: 22.7 t ADT: 21,133

WOODS CR RD

Over: WOODS CREEK

8.1 NE JCT SR 2, Snohomish, WA

Built 1966 Load: 22.7 t ADT: 1,578

HOME ACRES ROAD

Over: EBEY SLOUGH

2.6 S JCT SR 2, Snohomish, WA

Built 1976 Load: 22.7 t ADT: 1,116

MOUNTAIN LOOP HWY.

Over: COAL CREEK

24.0 E JCT SR 92, Snohomish, WA

Built 1949 Load: 22.7 t ADT: 1,324

HIGH BRIDGE RD

Over: TRIB. SNOQUALMIE RIVER

2.9 N KING CO LINE, Snohomish, WA

Built 1983 Load: 22.7 t ADT: 1,754

BOLLENBAUGH HILLRD

Over: WEST FORK WOODS CREEK

3.5 NE JCT SR 2, Snohomish, WA

Built 1967 Load: 22.7 t ADT: 1,378

MARINE DRIVE

Over: STURGEON CREEK

0.8 NW JCT I-5, Snohomish, WA

Built 1988 Load: 22.7 t ADT: 16,436

US 2

Over: EBEY SLOUGH

1.1 E JCT I-5, Snohomish, WA

Built 1967 Load: 23.3 t ADT: 1,109

RD. NO. 26

Over: BUCK CREEK

M.P. 15.4 RD. NO. 26, Snohomish, WA

Built 1960 Load: 23.3 t ADT: 79

SR 9

Over: SNOHOMISH RIVER

2.2 N JCT SR 96, Snohomish, WA

Built 1959 Load: 23.6 t ADT: 28,331

US 2

Over: EBEY SLOUGH

1.9 E JCT I-5, Snohomish, WA

Built 1967 Load: 23.6 t ADT: 393

INDEX-GALENA RD

Over: LEWIS CREEK

2.6 NE JCT SR 2, Snohomish, WA

Built 1968 Load: 23.6 t ADT: 186

92 ND ST SE

Over: OVERFLOW CHANNEL

0.38W INT SR-2, Snohomish, WA

Built 1948 Load: 23.6 t ADT: 13,497

I-5

Over: 44TH AVE NW

4.1 N JCT SR 532, Snohomish, WA

Built 1957 Load: 23.7 t ADT: 32,189

US 2

Over: FRENCH CREEK

5.4 E JCT SR 9, Snohomish, WA

Built 1948 Load: 24.0 t ADT: 25,292

SR 525

Over: GN RY

1.9 N JCT SR 526, Snohomish, WA

Built 1941 Load: 24.5 t ADT: 10,313

US 2

Over: EBEY ISLAND

0.8 E JCT I-5, Snohomish, WA

Built 1968 Load: 24.5 t ADT: 39,701

311 TH AVE SE

Over: BRANCH SO SL SKYKOMISH R

0.7 S JCT SR 2, Snohomish, WA

Built 1970 Load: 24.5 t ADT: 2,323

MARINE DRIVE

Over: STILLAGUAMISH RIVER

1.4 S SR 532, Snohomish, WA

Built 1959 Load: 24.5 t ADT: 5,524

OLSON RD/36 AVE NW

Over: NORMAN SLOUGH

0.1 S JCT SR 530, Snohomish, WA

Built 1979 Load: 24.5 t ADT: 50

LOCKWOOD RD

Over: SWAMP CREEK

0.02 N KING CO LIN, Snohomish, WA

Built 1968 Load: 24.5 t ADT: 4,651

20TH AVENUE WEST

Over: RD TO BOEING PARKING LOT

BOEING INTRCHNG, Snohomish, WA

Built 1969 Load: 24.5 t ADT: 19,626

LOMBARD AVENUE

Over: BURLINGTON NORTHERN RR

0.1 N OF HEWITT AVE, Snohomish, WA

Built 1989 Load: 24.5 t ADT: 371

SR 530

Over: SQUIRE CREEK

24.2 E JCT SR 9, Snohomish, WA

Built 1972 Load: 24.9 t ADT: 3,267

HEWITT AVENUE

Over: BURLINGTON NORTHERN RR

0.1 MI E OF BROADWAY, Snohomish, WA

Built 1989 Load: 25.3 t ADT: 7,565

US 2

Over: SKYKOMISH R

15.4 E JCT SR 203, Snohomish, WA

Built 1932 Load: 25.4 t ADT: 9,355

RD. NO. 26

Over: DOWNEY CREEK

M.P. 21.9 RD. NO. 26, Snohomish, WA

Built 1962 Load: 25.4 t ADT: 79

SMOKEY POINT BLVD

Over: SOUTH SLOUGH

0.3 S JCT SR 530, Snohomish, WA

Built 1918 Load: 25.4 t ADT: 5,680

SMOKEY POINT BLVD

Over: PORTAGE CREEK

0.7 S JCT SR 530, Snohomish, WA

Built 1922 Load: 25.4 t ADT: 5,900

MOUNTAIN LOOP HWY

Over: BACKMAN CREEK

2.9 SE JCT SR 530, Snohomish, WA

Built 1979 Load: 25.4 t ADT: 812

SMITH ST I-5 INTR

Over: ABANDONED RAILROAD GRADE

39 ST @ SMITH, Snohomish, WA

Built 1974 Load: 25.9 t ADT: 3,437

I-5

Over: ABANDONED RR

3.5 N JCT SR 527, Snohomish, WA

Built 1967 Load: 26.3 t ADT: 76,668

RD. NO. 26

Over: SULPHUR CREEK

M.P. 22.9 RD. NO. 26, Snohomish, WA

Built 1964 Load: 26.3 t ADT: 79

ROAD

Over: MEADOW CREEK

3.9 MI E OF 65/6530 JCT, Snohomish, WA

Built 1969 Load: 26.3 t ADT: 8

LARSON RD

Over: SO SLOUGH STILLAGUAMISH

0.6 W JCT PIONEER HY, Snohomish, WA

Built 1963 Load: 26.3 t ADT: 3,883

INDEX-GARLAND RD

Over: N.F. SKYKOMISH RIVER

10.1 NE JCT SR 2, Snohomish, WA

Built 1970 Load: 26.3 t ADT: 54

214TH ST SE

Over: NORTH CREEK

0.1 W JCT SR527, Snohomish, WA

Built 1999 Load: 26.3 t ADT: 725

INDEX-GALENA RD

Over: LEWIS CREEK

2.4 NE JCT SR 2, Snohomish, WA

Built 2003 Load: 26.3 t ADT: 186

SWEDE HEAVEN RD

Over: TRIB.N.F.STILLAGUAMISH R

2.1 NW JCT SR 530, Snohomish, WA

Built 1985 Load: 27.2 t ADT: 529

12TH ST NE

Over: LITTLE PILCHUCK CREEK

2.0 S JCT SR 92, Snohomish, WA

Built 1985 Load: 27.2 t ADT: 27

SANDERS RD

Over: CARPENTER CREEK

8.1 E JCT SR 9, Snohomish, WA

Built 1984 Load: 27.2 t ADT: 15

ROBE-MENZEL RD

Over: PILCHUCK RIVER

2.2 S JCT SR 92, Snohomish, WA

Built 1978 Load: 27.2 t ADT: 2,124

20TH STREET NE

Over: LAKE STEVENS OUTFLOW

0.01 E JCT HARTFORD DR, Snohomish, WA

Built 1993 Load: 27.2 t ADT: 5,300

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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Compiled by PlainBridges, Independent data publisher

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.