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)

SAUK PRAIRIE RD

Fair

Over: DAN CREEK

2.9 NE JCT SR 530, Snohomish, WA

Built 1971 Load: 21.8 t ADT: 574

84 TH AVE W

Fair

Over: CHASE LAKE

0.6 SW JCT SR 99, Snohomish, WA

Built 1968 Load: 21.8 t ADT: 4,386

233RD PL S.E.

Fair

Over: BEAR CREEK

0.1 W JCT SR 9, Snohomish, WA

Built 1973 Load: 21.8 t ADT: 4,650

HEVLY RD

Fair

Over: STILLAGUAMISH SLOUGH

0.8 NE SR530, Snohomish, WA

Built 2005 Load: 21.8 t ADT: 71

MENZEL LAKE RD.

Fair

Over: PILCHUCK RIVER

6.0 SE JCT SR 92, Snohomish, WA

Built 1956 Load: 22.0 t ADT: 1,076

SR 96

Fair

Over: FARM STORAGE

4.0 E JCT SR 527, Snohomish, WA

Built 1970 Load: 22.0 t ADT: 3,024

I-5

Fair

Over: STILLAGUAMISH RIVER

0.7 N JCT SR 530, Snohomish, WA

Built 1933 Load: 22.7 t ADT: 43,620

US 2

Fair

Over: WOODS CREEK

0.4 E JCT SR 203, Snohomish, WA

Built 1950 Load: 22.7 t ADT: 21,133

WOODS CR RD

Fair

Over: WOODS CREEK

8.1 NE JCT SR 2, Snohomish, WA

Built 1966 Load: 22.7 t ADT: 1,578

HOME ACRES ROAD

Fair

Over: EBEY SLOUGH

2.6 S JCT SR 2, Snohomish, WA

Built 1976 Load: 22.7 t ADT: 1,116

MOUNTAIN LOOP HWY.

Fair

Over: COAL CREEK

24.0 E JCT SR 92, Snohomish, WA

Built 1949 Load: 22.7 t ADT: 1,324

HIGH BRIDGE RD

Fair

Over: TRIB. SNOQUALMIE RIVER

2.9 N KING CO LINE, Snohomish, WA

Built 1983 Load: 22.7 t ADT: 1,754

BOLLENBAUGH HILLRD

Fair

Over: WEST FORK WOODS CREEK

3.5 NE JCT SR 2, Snohomish, WA

Built 1967 Load: 22.7 t ADT: 1,378

MARINE DRIVE

Fair

Over: STURGEON CREEK

0.8 NW JCT I-5, Snohomish, WA

Built 1988 Load: 22.7 t ADT: 16,436

US 2

Fair

Over: EBEY SLOUGH

1.1 E JCT I-5, Snohomish, WA

Built 1967 Load: 23.3 t ADT: 1,109

RD. NO. 26

Fair

Over: BUCK CREEK

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

Built 1960 Load: 23.3 t ADT: 79

SR 9

Fair

Over: SNOHOMISH RIVER

2.2 N JCT SR 96, Snohomish, WA

Built 1959 Load: 23.6 t ADT: 28,331

US 2

Fair

Over: EBEY SLOUGH

1.9 E JCT I-5, Snohomish, WA

Built 1967 Load: 23.6 t ADT: 393

INDEX-GALENA RD

Fair

Over: LEWIS CREEK

2.6 NE JCT SR 2, Snohomish, WA

Built 1968 Load: 23.6 t ADT: 186

92 ND ST SE

Fair

Over: OVERFLOW CHANNEL

0.38W INT SR-2, Snohomish, WA

Built 1948 Load: 23.6 t ADT: 13,497

I-5

Fair

Over: 44TH AVE NW

4.1 N JCT SR 532, Snohomish, WA

Built 1957 Load: 23.7 t ADT: 32,189

US 2

Fair

Over: FRENCH CREEK

5.4 E JCT SR 9, Snohomish, WA

Built 1948 Load: 24.0 t ADT: 25,292

SR 525

Fair

Over: GN RY

1.9 N JCT SR 526, Snohomish, WA

Built 1941 Load: 24.5 t ADT: 10,313

US 2

Fair

Over: EBEY ISLAND

0.8 E JCT I-5, Snohomish, WA

Built 1968 Load: 24.5 t ADT: 39,701

311 TH AVE SE

Fair

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

Fair

Over: STILLAGUAMISH RIVER

1.4 S SR 532, Snohomish, WA

Built 1959 Load: 24.5 t ADT: 5,524

OLSON RD/36 AVE NW

Fair

Over: NORMAN SLOUGH

0.1 S JCT SR 530, Snohomish, WA

Built 1979 Load: 24.5 t ADT: 50

LOCKWOOD RD

Fair

Over: SWAMP CREEK

0.02 N KING CO LIN, Snohomish, WA

Built 1968 Load: 24.5 t ADT: 4,651

20TH AVENUE WEST

Fair

Over: RD TO BOEING PARKING LOT

BOEING INTRCHNG, Snohomish, WA

Built 1969 Load: 24.5 t ADT: 19,626

LOMBARD AVENUE

Fair

Over: BURLINGTON NORTHERN RR

0.1 N OF HEWITT AVE, Snohomish, WA

Built 1989 Load: 24.5 t ADT: 371

SR 530

Fair

Over: SQUIRE CREEK

24.2 E JCT SR 9, Snohomish, WA

Built 1972 Load: 24.9 t ADT: 3,267

HEWITT AVENUE

Fair

Over: BURLINGTON NORTHERN RR

0.1 MI E OF BROADWAY, Snohomish, WA

Built 1989 Load: 25.3 t ADT: 7,565

US 2

Fair

Over: SKYKOMISH R

15.4 E JCT SR 203, Snohomish, WA

Built 1932 Load: 25.4 t ADT: 9,355

RD. NO. 26

Fair

Over: DOWNEY CREEK

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

Built 1962 Load: 25.4 t ADT: 79

SMOKEY POINT BLVD

Fair

Over: SOUTH SLOUGH

0.3 S JCT SR 530, Snohomish, WA

Built 1918 Load: 25.4 t ADT: 5,680

SMOKEY POINT BLVD

Fair

Over: PORTAGE CREEK

0.7 S JCT SR 530, Snohomish, WA

Built 1922 Load: 25.4 t ADT: 5,900

MOUNTAIN LOOP HWY

Fair

Over: BACKMAN CREEK

2.9 SE JCT SR 530, Snohomish, WA

Built 1979 Load: 25.4 t ADT: 812

SMITH ST I-5 INTR

Fair

Over: ABANDONED RAILROAD GRADE

39 ST @ SMITH, Snohomish, WA

Built 1974 Load: 25.9 t ADT: 3,437

I-5

Fair

Over: ABANDONED RR

3.5 N JCT SR 527, Snohomish, WA

Built 1967 Load: 26.3 t ADT: 76,668

RD. NO. 26

Fair

Over: SULPHUR CREEK

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

Built 1964 Load: 26.3 t ADT: 79

ROAD

Fair

Over: MEADOW CREEK

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

Built 1969 Load: 26.3 t ADT: 8

LARSON RD

Fair

Over: SO SLOUGH STILLAGUAMISH

0.6 W JCT PIONEER HY, Snohomish, WA

Built 1963 Load: 26.3 t ADT: 3,883

INDEX-GARLAND RD

Fair

Over: N.F. SKYKOMISH RIVER

10.1 NE JCT SR 2, Snohomish, WA

Built 1970 Load: 26.3 t ADT: 54

214TH ST SE

Fair

Over: NORTH CREEK

0.1 W JCT SR527, Snohomish, WA

Built 1999 Load: 26.3 t ADT: 725

INDEX-GALENA RD

Fair

Over: LEWIS CREEK

2.4 NE JCT SR 2, Snohomish, WA

Built 2003 Load: 26.3 t ADT: 186

SWEDE HEAVEN RD

Fair

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

Fair

Over: LITTLE PILCHUCK CREEK

2.0 S JCT SR 92, Snohomish, WA

Built 1985 Load: 27.2 t ADT: 27

SANDERS RD

Fair

Over: CARPENTER CREEK

8.1 E JCT SR 9, Snohomish, WA

Built 1984 Load: 27.2 t ADT: 15

ROBE-MENZEL RD

Fair

Over: PILCHUCK RIVER

2.2 S JCT SR 92, Snohomish, WA

Built 1978 Load: 27.2 t ADT: 2,124

20TH STREET NE

Fair

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.

Related

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