Lewis County, WA

422 public highway bridges

Lewis County Bridge Snapshot

Lewis County, Washington contains 422 public highway bridges in the FHWA National Bridge Inventory. Roughly 37.4% are rated “Good,” 54.5% “Fair,” 3.3% “Poor,” and 3.3% 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.

422
Total Bridges
37.4%
Good
3.3%
Poor
3.3%
Structurally Deficient

Condition Distribution

Good
37.4% (158)
Fair
54.5% (230)
Poor
3.3% (14)
SD
3.3% (14)

All Bridges (422)

FAS 1198

Good

Over: BNRR WARD STREET

00.0 JCT. W B ST., Lewis, WA

Built 1980 Load: 31.7 t ADT: 3,993

NO DATA ENTERED

Good

Over: LITTLE NISQUALLY RIVER

12.4 MILES WEST OF HWY 7, Lewis, WA

Built 1971 Load: 31.8 t ADT: 30

SR 6

Good

Over: ROCK CREEK

1.5 E PACIFIC CO, Lewis, WA

Built 2015 Load: 32.1 t ADT: 1,561

NO DATA ENTERED

Good

Over: WOODS CREEK #2

NO DATA ENTERED, Lewis, WA

Built 2019 Load: 32.4 t ADT: 99

2350RD

Good

Over: WOODS CREEK #3

NO DATA ENTERED, Lewis, WA

Built 2019 Load: 32.4 t ADT: 99

NO DATA ENTERED

Good

Over: CAMP CREEK

SE on 23RD from CVRD, Lewis, WA

Built 2022 Load: 32.4 t ADT: 375

COUSINS ROAD

Good

Over: UNNAMED TRIBUTARY

3.8 S SR6, Lewis, WA

Built 2021 Load: 32.4 t ADT: 168

US 12

Good

Over: COWLITZ R OVERFLOW

8.1 E JCT SR 131, Lewis, WA

Built 1958 Load: 32.7 t ADT: 2,648

US 12

Good

Over: COWLITZ RIVER

1.8 E JCT SR 122, Lewis, WA

Built 1961 Load: 32.7 t ADT: 6,630

SR 507

Good

Over: SKOOKUMCHUCK RIVER

4.5 N JCT I-5, Lewis, WA

Built 1978 Load: 32.7 t ADT: 3,828

I-5 NBCD

Good

Over: SKOOKUMCHUCK RIVER

0.7 N JCT SR 507, Lewis, WA

Built 2013 Load: 32.7 t ADT: 13,670

I-5

Good

Over: DILLENBAUGH CREEK

3.8 N JCT SR 508, Lewis, WA

Built 1965 Load: 32.7 t ADT: 59,955

NO DATA ENTERED

Good

Over: SUMMIT CREEK

0.4 MILE NORTH OF HWY 12, Lewis, WA

Built 1965 Load: 32.7 t ADT: 20

RIFFE ROAD

Good

Over: PUD TAILRACE

0.5 SW PACKWOOD, Lewis, WA

Built 1962 Load: 32.7 t ADT: 6

HAYWIRE ROAD

Good

Over: STEARNS CREEK

2.5 W NAPAVINE, Lewis, WA

Built 1963 Load: 32.7 t ADT: 168

HARRISON AVE

Good

Over: SKOOKUMCHUCK RIVER

00.0 JCT. W FIRST S, Lewis, WA

Built 1968 Load: 32.7 t ADT: 22,996

Alley

Good

Over: China Creek

0.1 WEST OF ROCK ST, Lewis, WA

Built 2011 Load: 32.7 t ADT: 28

SR 505

Good

Over: LACAMAS CREEK

0.5 E JCT I-5, Lewis, WA

Built 1955 Load: 33.4 t ADT: 3,773

SNYDER ROAD

Good

Over: HALL CREEK

0.2 E HWY 12, Lewis, WA

Built 2020 Load: 33.4 t ADT: 212

SR 508

Good

Over: BEAR CANYON CREEK

21.4 E JCT I-5, Lewis, WA

Built 1983 Load: 33.6 t ADT: 1,171

SR 505

Good

Over: COWLITZ RIVER

3.8 E JCT I-5, Lewis, WA

Built 1994 Load: 33.6 t ADT: 3,842

ALLEY

Good

Over: China Creek

SW alley Maple/Pearl, Lewis, WA

Built 1946 Load: 33.6 t ADT: 10

US 12

Good

Over: LAKE CR

0.3 E JCT SR 7, Lewis, WA

Built 1952 Load: 34.5 t ADT: 4,992

SR 508

Good

Over: S FORK NEWAUKUM RIVER

2.6 E JCT I-5, Lewis, WA

Built 1989 Load: 34.5 t ADT: 4,269

LOST VALLEY ROAD

Good

Over: STILLMAN CREEK

0.3 W BOISTFORT, Lewis, WA

Built 1995 Load: 34.5 t ADT: 157

NORTH MILITARY RD.

Good

Over: OLEQUA CREEK

4.55 N JCT SR 505, Lewis, WA

Built 1995 Load: 34.5 t ADT: 2,252

SARGENT ROAD

Good

Over: OLEQUA CREEK

2.0 SE EVELINE, Lewis, WA

Built 1972 Load: 34.5 t ADT: 621

BUNKER ROAD

Good

Over: BUNKER CREEK

10.0 NW ADNA, Lewis, WA

Built 1955 Load: 34.5 t ADT: 24

TELEGRAPH ROAD

Good

Over: BEAR CREEK

3.0 SW TOLEDO, Lewis, WA

Built 1965 Load: 34.5 t ADT: 122

4600000

Good

Over: LAVA CREEK

7.39 MILES DOWN #46RD, Lewis, WA

Built 2020 Load: 35.3 t ADT: 50

SR 506

Good

Over: STILLWATER CR

3.7 E COWLITZ CO, Lewis, WA

Built 1963 Load: 35.4 t ADT: 972

SR 505

Good

Over: MILL CREEK

1.3 E JCT I-5, Lewis, WA

Built 1984 Load: 35.4 t ADT: 3,690

ANTRIM ROAD

Good

Over: OLEQUA CREEK

0.5 SE EVELINE, Lewis, WA

Built 1958 Load: 35.4 t ADT: 261

HYPPA ROAD

Good

Over: INDEPENDENCE CREEK

0.01 E.JCT.10024, Lewis, WA

Built 1968 Load: 35.4 t ADT: 23

JYLHA ROAD

Good

Over: INDEPENDENCE CREEK

13.0 W CENTRALIA, Lewis, WA

Built 1971 Load: 35.4 t ADT: 56

GARRARD CREEK RD

Good

Over: INDEPENDENCE CREEK

0.07 W.JCT.91008, Lewis, WA

Built 1968 Load: 35.4 t ADT: 219

MAYS BRIDGE ROAD

Good

Over: CHEHALIS RIVER

NORTH OF SR 6 MP 37.20, Lewis, WA

Built 2015 Load: 35.6 t ADT: 302

US 12

Good

Over: RAINEY CREEK OVERFLOW

10.1 E JCT SR 7, Lewis, WA

Built 1957 Load: 36.3 t ADT: 4,752

NO DATA ENTERED

Good

Over: NORTH FORK TILTON RIVER

3.8 MILES NW OF JCT. HWY, Lewis, WA

Built 1983 Load: 36.3 t ADT: 70

LITTLE HANAFORD

Good

Over: S FK HANAFORD CREEK

2.0 W KOPIAH, Lewis, WA

Built 1957 Load: 36.3 t ADT: 137

WILDWOOD ROAD

Good

Over: BLACK CREEK

2.99 NW SR 506, Lewis, WA

Built 2013 Load: 36.3 t ADT: 170

W. Maple St

Good

Over: China Creek

W. of Hwy 507 (Tower Ave), Lewis, WA

Built 1941 Load: 36.3 t ADT: 1,504

SR 7

Good

Over: NISQUALLY R OVERFLOW

16.1 N JCT SR 508, Lewis, WA

Built 1945 Load: 37.2 t ADT: 2,818

GARRARD CREEK RD.

Good

Over: S.FORK GARRARD CREEK

5.10 NW.JCT.91008, Lewis, WA

Built 1972 Load: 37.2 t ADT: 175

COOK ROAD

Good

Over: LAKE CREEK

2.0 SE CURTIS, Lewis, WA

Built 1994 Load: 37.2 t ADT: 25

SR 508

Good

Over: S FORK NEWAUKUM RIVER

13.7 E JCT I-5, Lewis, WA

Built 2018 Load: 37.3 t ADT: 1,672

COMA ROAD

Good

Over: BRIM CREEK

2.0 W VADER, Lewis, WA

Built 1960 Load: 38.1 t ADT: 66

CHANDLER ROAD

Good

Over: CHEHALIS RIVER

1.O E DOTY, Lewis, WA

Built 2010 Load: 38.1 t ADT: 500

I-5

Good

Over: RR & REYNOLDS RD.

1.6 N JCT SR 507, Lewis, WA

Built 2013 Load: 38.2 t ADT: 34,801

SR 6

Good

Over: ROCK CREEK

1.9 E PACIFIC CO, Lewis, WA

Built 2015 Load: 38.2 t ADT: 1,561

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