Snohomish County, WA

516 public highway bridges

Snohomish County Bridge Snapshot

Snohomish County, Washington contains 516 public highway bridges in the FHWA National Bridge Inventory. Roughly 37.8% are rated “Good,” 37.8% “Fair,” 3.7% “Poor,” and 3.7% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in WA are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

516
Total Bridges
37.8%
Good
3.7%
Poor
3.7%
Structurally Deficient

Condition Distribution

Good
37.8% (195)
Fair
37.8% (195)
Poor
3.7% (19)
SD
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.

Related

Browse all → | Rankings →
Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial