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)

SR 529

Fair

Over: STEAMBOAT SLOUGH

6.3 N JCT SR 529 SPUR, Snohomish, WA

Built 1954 Load: 28.1 t ADT: 16,203

SR 526

Fair

Over: E CASINO RD

3.7 E JCT SR 525, Snohomish, WA

Built 1969 Load: 28.1 t ADT: 72,703

HEVLY RD

Fair

Over: KOCH'S SLOUGH FLOODWAY

0.6 NE JCT SR 530, Snohomish, WA

Built 1981 Load: 28.1 t ADT: 77

120TH AVE. SE

Fair

Over: TRIB. PILCHUCK RIVER

0.5 S JCT Three Lk Rd/SR2, Snohomish, WA

Built 1964 Load: 28.1 t ADT: 15

SR 524

Fair

Over: SWAMP CREEK

1.5 E JCT I-5, Snohomish, WA

Built 1935 Load: 28.1 t ADT: 18,536

NICKS RD

Fair

Over: JIM CREEK

5.5 SE JCT SR 530, Snohomish, WA

Built 1987 Load: 28.1 t ADT: 29

MOUNTAIN LOOP HWY

Fair

Over: BLACK CREEK

14.3 E JCT SR 92, Snohomish, WA

Built 1952 Load: 28.1 t ADT: 1,932

WOODS CR RD

Fair

Over: WOODS CREEK

8.6 NE JCT SR 2, Snohomish, WA

Built 1963 Load: 28.1 t ADT: 1,593

SR 9

Fair

Over: SNOHOMISH R OVERFLOW

1.9 N JCT SR 96, Snohomish, WA

Built 1960 Load: 28.2 t ADT: 28,331

OLD PIPELINE RD

Fair

Over: WOODS CREEK

5.5 NW JCT SR 2, Snohomish, WA

Built 1960 Load: 29.0 t ADT: 529

CRESWELL RD

Fair

Over: W. Fork Woods Cr.

7.9 E JCT SR 9, Snohomish, WA

Built 1964 Load: 29.0 t ADT: 828

58TH AVE S.E.

Fair

Over: BEAR CREEK

0.2 N KING CO LINE, Snohomish, WA

Built 1969 Load: 29.0 t ADT: 1,146

ELLIOTT RD

Fair

Over: CATTLE PASS

3.2 SE JCT SR 9, Snohomish, WA

Built 1970 Load: 29.0 t ADT: 4,155

VAN RY BLVD

Fair

Over: MCALEER CREEK

0.2 NW 244TH ST SW, Snohomish, WA

Built 1990 Load: 29.0 t ADT: 1,000

ROAD

Fair

Over: RAPID RIVER

1.2 MI NE OF 65/6530 JCT, Snohomish, WA

Built 1966 Load: 29.1 t ADT: 8

US 2

Fair

Over: ANDERSON CREEK

19.3 E JCT SR 203, Snohomish, WA

Built 1933 Load: 29.5 t ADT: 6,381

LEY RD

Fair

Over: WALLACE RIVER

1.3 NE JCT SR 2, Snohomish, WA

Built 1970 Load: 29.9 t ADT: 1,061

NORTH MACHIAS RD

Fair

Over: LITTLE PILCHUCK CREEK

1.5 S JCT SR 92, Snohomish, WA

Built 1977 Load: 29.9 t ADT: 5,774

SR 526

Fair

Over: HARDESON ROAD

2.9 E JCT SR 525, Snohomish, WA

Built 1969 Load: 30.8 t ADT: 67,918

I-5

Fair

Over: QUILCEDA CREEK

0.9 N JCT SR 528, Snohomish, WA

Built 1971 Load: 30.8 t ADT: 65,521

236 ST NE

Fair

Over: PILCHUCK CREEK

0.4 W JCT SR5, Snohomish, WA

Built 1968 Load: 30.8 t ADT: 1,445

INDEX-GALENA RD

Fair

Over: TROUBLESOME CREEK

11.2 NE JCT SR 2, Snohomish, WA

Built 1973 Load: 30.8 t ADT: 86

VERNON ROAD

Fair

Over: WETLAND @ N LAKE STEVENS

0.7 NE JCT SR9, Snohomish, WA

Built 2001 Load: 30.8 t ADT: 6,050

RD. NO. 4032

Fair

Over: MALLARDY CREEK

M.P. 1.0 RD. NO. 4032, Snohomish, WA

Built 1961 Load: 30.9 t ADT: 23

RD. NO. 2060

Fair

Over: CLEAR CREEK

M.P. 5.8 RD. NO. 2060, Snohomish, WA

Built 1967 Load: 30.9 t ADT: 9

US 2

Fair

Over: SNOHOMISH RIVER

0.2 E JCT I-5, Snohomish, WA

Built 1968 Load: 31.7 t ADT: 39,701

I-5

Fair

Over: 300TH ST NW/FREEBORN RD

2.4 N JCT SR 532, Snohomish, WA

Built 1971 Load: 31.7 t ADT: 31,489

INDEX-GALENA RD

Fair

Over: S. BITTER CR (dry)

4.1 NE JCT SR 2, Snohomish, WA

Built 1967 Load: 31.7 t ADT: 132

INDEX-GALENA RD

Fair

Over: BITTER CREEK

4.1 NE JCT SR 2, Snohomish, WA

Built 1967 Load: 31.7 t ADT: 132

LARCH WAY

Fair

Over: SWAMP CREEK

1.4 SW INT I-405, Snohomish, WA

Built 1963 Load: 31.7 t ADT: 10,030

VAN ESS FARM RD

Fair

Over: WOODS CREEK

2.7 NE JCT SR 2, Snohomish, WA

Built 1989 Load: 31.7 t ADT: 66

ROAD

Fair

Over: N.FORK SKYKOMISH RIVER

16.0 MI N OF HWY 2/65 JCT, Snohomish, WA

Built 1959 Load: 31.8 t ADT: 123

SPRUANCE BLVD.

Fair

Over: EAST WATERWAY

NAVAL STATION EVERETT, WA, Snohomish, WA

Built 1995 Load: 32.6 t ADT: 50

BLUE MOUNTAIN ROAD

Fair

Over: JIM CREEK

NAVRADSTA OSO, WA, Snohomish, WA

Built 1949 Load: 32.6 t ADT: 20

I-5

Fair

Over: PORTAGE CREEK

1.9 N JCT SR 531, Snohomish, WA

Built 1957 Load: 32.7 t ADT: 45,883

SR 532

Fair

Over: FLORENCE RD BNSF RR

2.1 E SNOHOMISH CO, Snohomish, WA

Built 1960 Load: 32.7 t ADT: 18,750

US 2

Fair

Over: W-N RAMP EVERETT AVE

JCT I-5, Snohomish, WA

Built 1966 Load: 32.7 t ADT: 8,363

SB I-5 RAMP

Fair

Over: DETENTION VAULT

0.4 N JCT SR 524, Snohomish, WA

Built 2012 Load: 32.7 t ADT: 21,538

HIDDEN VALLEY RD

Fair

Over: PURDY CREEK

6.8 SE JCT SR 92, Snohomish, WA

Built 1980 Load: 32.7 t ADT: 100

MOUNTAIN LOOP HWY.

Fair

Over: TWENTYTWO CREEK

12.8 E JCT SR 92, Snohomish, WA

Built 1952 Load: 32.7 t ADT: 2,662

DUBUQUE RD

Fair

Over: PILCHUCK RIVER

4.0 N JCT SR2, Snohomish, WA

Built 1991 Load: 32.7 t ADT: 4,682

164TH ST SW

Fair

Over: SWAMP CREEK

1.0 W JCT I-5, Snohomish, WA

Built 1960 Load: 32.7 t ADT: 29,286

US 2

Fair

Over: EBEY SLOUGH DRAINAGE

2.3 E JCT I-5, Snohomish, WA

Built 1993 Load: 33.6 t ADT: 15,144

JORDAN RD

Fair

Over: S.F. STILLAGUAMISH RIVER

1.1 N JCT SR 92, Snohomish, WA

Built 1966 Load: 33.6 t ADT: 4,263

REECES HIDEOUT RD

Fair

Over: S.F. SAUK RIVER

0.1 W JCT MT LP HY, Snohomish, WA

Built 1977 Load: 33.6 t ADT: 31

MOUNTAIN LOOP HWY.

Fair

Over: DEER CREEK

23.3 E JCT SR 92, Snohomish, WA

Built 1949 Load: 33.6 t ADT: 1,621

MARINE DRIVE

Fair

Over: JORGENSON SLOUGH

0.8 S SR 532, Snohomish, WA

Built 1967 Load: 33.6 t ADT: 6,375

211TH AVE SE

Fair

Over: WEST FORK WOODS CREEK

10.5 SE JCT SR 92, Snohomish, WA

Built 1985 Load: 33.6 t ADT: 42

365 TH DR NE

Fair

Over: TRIB.N.F.STILLAGUAMISH

2.8 NW JCT SR 530, Snohomish, WA

Built 1992 Load: 33.6 t ADT: 167

CATHERINE DR

Fair

Over: CATHERINE CREEK

0.7 S JCT SR92, Snohomish, WA

Built 1998 Load: 34.0 t ADT: 1,000

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.