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)

BNSF RR

Unknown

Over: LINCOLN AVE.

0.6 S JCT SR 2, Snohomish, WA

Built 1910 ADT: 4,539

BNSF RR

Unknown

Over: INDEX-GALENA RD.

0.9 E JCT SR 2, Snohomish, WA

Built 1961 ADT: 718

PEDESTRIAN

Unknown

Over: SR 529/W MARINE VIEW DR

1.2 N JCT SR 529 SPUR, Snohomish, WA

Built 1991 ADT: 13,663

FED.AV.PED.TRAFFIC

Unknown

Over: E MUKILTEO BOULEVARD

0.9 MI W OF JCT I5, Snohomish, WA

Built 1993 ADT: 14,100

TULALIP PED BRIDGE

Unknown

Over: MARINE DR

6.1 NE JCT I5, Snohomish, WA

Built 1997 ADT: 8,565

156TH ST NE

Unknown

Over: INTERSTATE 5

8.9 N JCT SR 528, Snohomish, WA

Built 2012 ADT: 109,515

BNSF RAILROAD

Unknown

Over: NORMAN ROAD

1.2 W JCT PIONEER HWY, Snohomish, WA

Built 2013 ADT: 609

LOWELL-SNOH RIV RD

Fair

Over: MARSHLAND FLOOD CANAL

0.9 E Jct I-5, Snohomish, WA

Built 1963 Load: 9.4 t ADT: 5,544

86TH ST SE

Fair

Over: PILCHUCK RIVER

0.7 SE JCT SR 2, Snohomish, WA

Built 1924 Load: 11.0 t ADT: 421

I-5 SB

Fair

Over: RAILROAD

3.8 N JCT SR 527, Snohomish, WA

Built 1967 Load: 12.6 t ADT: 88,747

I-5

Fair

Over: 52ND AVE W

2.3 N JCT SR 104, Snohomish, WA

Built 1963 Load: 13.0 t ADT: 96,309

MOUNTAIN LOOP HWY.

Fair

Over: PERRY CREEK

26.2 E JCT SR 92, Snohomish, WA

Built 1958 Load: 14.5 t ADT: 444

MOUNTAIN LOOP HWY.

Fair

Over: WISCONSIN CREEK

14.7 E JCT SR 92, Snohomish, WA

Built 1960 Load: 14.5 t ADT: 1,118

I-5

Fair

Over: 212TH ST SW

2.2 N JCT SR 104, Snohomish, WA

Built 1963 Load: 14.6 t ADT: 96,309

I-5

Fair

Over: SMITH AVE

3.7 N JCT SR 527, Snohomish, WA

Built 1967 Load: 14.6 t ADT: 88,747

MOUNTAIN LOOP HWY.

Fair

Over: S.F. STILLAGUAMISH RIVER

12.1 E JCT SR 92, Snohomish, WA

Built 1954 Load: 14.6 t ADT: 1,756

164th Street SE

Fair

Over: North Creek

0.2 W JCT SR 527, Snohomish, WA

Built 1967 Load: 14.9 t ADT: 36,800

I-5 NB

Fair

Over: RAILROAD

3.8 N JCT SR 527, Snohomish, WA

Built 1967 Load: 15.2 t ADT: 88,747

MOUNTAIN LOOP HWY.

Fair

Over: S.F. STILLAGUAMISH RIVER

18.2 E JCT SR 92, Snohomish, WA

Built 1954 Load: 15.2 t ADT: 824

311 TH AVE SE

Fair

Over: SHINGLEBOLT SLOUGH

0.2 S JCT. SR 2, Snohomish, WA

Built 1962 Load: 15.4 t ADT: 1,793

SR 104

Fair

Over: PUGET SOUND @ EDMONDS

0.1 W JCT SR 524, Snohomish, WA

Built 1995 Load: 16.3 t ADT: 5,870

HILLIS RD

Fair

Over: GRANT CREEK

0.4 NW JCT SR 530, Snohomish, WA

Built 1978 Load: 17.2 t ADT: 348

NORMAN RD

Fair

Over: STILLAGUAMISH RIVER

1.5 SW JCT SR 530, Snohomish, WA

Built 1963 Load: 17.2 t ADT: 459

I-5

Fair

Over: 300TH ST NW/FREEBORN RD

2.4 N JCT SR 532, Snohomish, WA

Built 1957 Load: 18.1 t ADT: 31,489

ENGLISH GRADE RD

Fair

Over: TRIB.TOM MOORE SL./SKAGI

0.5 S SKAGIT CO., Snohomish, WA

Built 1987 Load: 18.1 t ADT: 163

JW MANN ROAD

Fair

Over: SKYKOMISH RIVER

0.1 S JCT SR 2, Snohomish, WA

Built 1961 Load: 18.1 t ADT: 1,793

WHITMAN RD

Fair

Over: N.F. STILLAGUAMISH RIVER

0.1 N JCT SR 530, Snohomish, WA

Built 1980 Load: 18.1 t ADT: 135

MOUNTAIN LOOP HWY.

Fair

Over: BUCK CREEK

28.4 E JCT SR 92, Snohomish, WA

Built 1960 Load: 18.1 t ADT: 923

I-5

Fair

Over: 44TH AVE NW

4.1 N JCT SR 532, Snohomish, WA

Built 1971 Load: 18.5 t ADT: 32,189

REITER ROAD

Fair

Over: DEER CREEK

2.3 NE JCT SR 2, Snohomish, WA

Built 1978 Load: 18.5 t ADT: 117

SR 104

Fair

Over: PUGET SOUND @ EDMONDS

0.1 W JCT SR 524, Snohomish, WA

Built 1953 Load: 19.0 t ADT: 5,870

US 2

Fair

Over: WALLACE RIVER

11.6 E JCT SR 203, Snohomish, WA

Built 1940 Load: 19.0 t ADT: 13,494

INDEX-GALENA RD

Fair

Over: TROUT CREEK

6.1 NE JCT SR 2, Snohomish, WA

Built 1966 Load: 19.0 t ADT: 128

MOUNTAIN LOOP HWY.

Fair

Over: SCHWEITZER CREEK

15.8 E JCT SR 92, Snohomish, WA

Built 1952 Load: 19.0 t ADT: 1,666

RD. NO. 25

Fair

Over: STRAIGHT CREEK

M.P. 3.17 RD. NO. 25, Snohomish, WA

Built 1963 Load: 19.1 t ADT: 24

Woodway Park Road

Fair

Over: DEER CRK-DEER PRK RESERV

1.0 S SR 104, Snohomish, WA

Built 1929 Load: 19.1 t ADT: 1,950

ROAD

Fair

Over: N FK SKYKOMISH RIVER

0.1 MI N OF 63/6335 JCT, Snohomish, WA

Built 1963 Load: 20.0 t ADT: 10

MOUNTAIN LOOP HWY.

Fair

Over: BOARDMAN CREEK

16.9 E JCT SR 92, Snohomish, WA

Built 1952 Load: 20.0 t ADT: 1,666

OAKES AVENUE

Fair

Over: BURLINGTON NORTHERN RR

0.1MI N. OF HEWITT, Snohomish, WA

Built 1989 Load: 20.0 t ADT: 1,312

US 2

Fair

Over: SULTAN MILL POND

8.2 E JCT SR 203, Snohomish, WA

Built 1952 Load: 20.4 t ADT: 19,842

I-5

Fair

Over: STEAMBOAT SLOUGH

4.1 N JCT US 2, Snohomish, WA

Built 1968 Load: 20.4 t ADT: 63,840

I-5

Fair

Over: STEAMBOAT SLOUGH

4.1 N JCT US 2, Snohomish, WA

Built 1968 Load: 20.4 t ADT: 63,840

US 2

Fair

Over: SULTAN RIVER

7.1 E JCT SR 203, Snohomish, WA

Built 1940 Load: 20.9 t ADT: 22,460

AIRPORT RD

Fair

Over: AIRFORCE RD

0.79 S JCT SR 526, Snohomish, WA

Built 1967 Load: 20.9 t ADT: 21,004

ROAD

Fair

Over: BECKLER RIVER

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

Built 1953 Load: 21.7 t ADT: 44

US 2

Fair

Over: PROCTOR CREEK

16.2 E JCT SR 203, Snohomish, WA

Built 1933 Load: 21.8 t ADT: 6,711

SR 203

Fair

Over: OVERFLOW SL

2.9 N KING CO, Snohomish, WA

Built 1954 Load: 21.8 t ADT: 11,836

I-5

Fair

Over: 212TH ST SW

2.2 N JCT SR 104, Snohomish, WA

Built 1963 Load: 21.8 t ADT: 96,309

ROAD

Fair

Over: RAPID RIVER

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

Built 1967 Load: 21.8 t ADT: 8

ROAD

Fair

Over: RAPID RIVER

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

Built 1954 Load: 21.8 t ADT: 44

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.