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)

Sort:

TOLEDO SALMON ROAD

Over: LITTLE SALMON CREEK

3.0 SE TOLEDO, Lewis, WA

Built 1955 Load: 24.5 t ADT: 104

LINCOLN CREEK RD

Over: LINCOLN CR.

1.01 W JCT 91000, Lewis, WA

Built 1976 Load: 24.9 t ADT: 710

PLEASANT VALLEY RD

Over: STEARNS CREEK

2.64 SE 24021, Lewis, WA

Built 1975 Load: 25.3 t ADT: 474

HWY 603

Over: OLEQUA CR

3.7 N JCT SR 5, Lewis, WA

Built 1945 Load: 25.4 t ADT: 2,472

NO DATA ENTERED

Over: JOHNSON CREEK

8 MILES SE OF HWY 12 (MP, Lewis, WA

Built 1950 Load: 25.4 t ADT: 141

SKATE CREEK ROAD

Over: COWLITZ

0.5 NW PACKWOOD, Lewis, WA

Built 1953 Load: 25.4 t ADT: 1,331

CEDAR ST

Over: CHINA CREEK

.3 N JCT. SR 507, Lewis, WA

Built 1947 Load: 25.4 t ADT: 295

US 12

Over: LAKE CR

18.4 E JCT SR 131, Lewis, WA

Built 1963 Load: 25.6 t ADT: 2,566

US 12

Over: MILL CREEK

12.5 E JCT I-5, Lewis, WA

Built 1938 Load: 26.3 t ADT: 7,791

NO DATA ENTERED

Over: BIG CREEK

200' SOUTH OF JCT. FS RD, Lewis, WA

Built 1959 Load: 26.3 t ADT: 30

FERRIER RD

Over: OLEQUA CREEK

0.23 E J WINLOCK-VADER RD, Lewis, WA

Built 1924 Load: 26.3 t ADT: 215

LOST VALLEY ROAD

Over: LOST VALLEY CREEK

1.0 W BOISTFORT, Lewis, WA

Built 1953 Load: 26.3 t ADT: 106

CEDAR CREEK ROAD

Over: CEDAR CREEK

0.11 N.JCT. 52410, Lewis, WA

Built 1977 Load: 26.3 t ADT: 63

OYLER ROAD

Over: LACAMAS CREEK

2.0 S MARYS CORNER, Lewis, WA

Built 1952 Load: 26.3 t ADT: 398

GARRARD CREEK RD.

Over: SOUTH FORK GARRARD CR.

4.36 W.JCT.91008, Lewis, WA

Built 1965 Load: 26.3 t ADT: 107

I-5

Over: SALZER CREEK

2.2 N JCT SR 6, Lewis, WA

Built 1951 Load: 27.2 t ADT: 75,731

I-5

Over: DILLENBAUGH CREEK

6.8 N JCT SR 508, Lewis, WA

Built 1952 Load: 27.2 t ADT: 65,022

I-5

Over: NP RY & DILLENBAUGH CR

6.1 N JCT SR 508, Lewis, WA

Built 1954 Load: 27.2 t ADT: 72,086

NO DATA ENTERED

Over: CISPUS RIVER

16 1/2 MILES SE OF JCT. H, Lewis, WA

Built 1958 Load: 27.2 t ADT: 69

ELK CREEK RD.

Over: ELK CREEK

0.85 W 27092, Lewis, WA

Built 1951 Load: 27.2 t ADT: 325

SR 131

Over: COWLITZ RIVER

1.8 N JCT NAT'L FOREST BD, Lewis, WA

Built 1949 Load: 27.2 t ADT: 1,096

AIRPORT ROAD

Over: SALZER CREEK

0.5 NW CHEHALIS, Lewis, WA

Built 1952 Load: 27.2 t ADT: 7,230

SCHMIT ROAD

Over: CEDAR CREEK

6.0 E TOLEDO, Lewis, WA

Built 1953 Load: 27.2 t ADT: 10

WILDWOOD ROAD

Over: S.FORK CHEHALIS RIVER

3.0 S BOISTFORT, Lewis, WA

Built 1955 Load: 27.2 t ADT: 284

HINING ROAD

Over: OLEQUA CREEK

S. C/L WINLOCK, Lewis, WA

Built 1957 Load: 27.2 t ADT: 29

MANDY ROAD

Over: FOSTER CREEK

3.0 SW TOLEDO, Lewis, WA

Built 1953 Load: 27.2 t ADT: 142

FAS 1027

Over: CHINA CREEK

1.1 E. END FAS1027, Lewis, WA

Built 1911 Load: 27.2 t ADT: 8,788

KELSO STREET

Over: STOWE CREEK

0.5 BLK E MAIN ST, Lewis, WA

Built 1950 Load: 27.2 t ADT: 355

STEVENS CANYON ROA

Over: FALLS CREEK

0.48 MILES WEST OF JCT. U, Lewis, WA

Built 1956 Load: 27.2 t ADT: 1,375

US 12

Over: SURREY CREEK

2.5 E JCT SR 131, Lewis, WA

Built 1958 Load: 27.9 t ADT: 2,648

JACKSON HWY SOUTH

Over: SALMON CREEK

1.0 S. S.R. 505, Lewis, WA

Built 1923 Load: 27.9 t ADT: 1,368

SR 508

Over: TILTON RIVER

32.4 E JCT I-5, Lewis, WA

Built 1947 Load: 28.1 t ADT: 2,178

GALVIN RD.

Over: CHEHALIS RIVER

1.5 W CENTRALIA, Lewis, WA

Built 1969 Load: 28.1 t ADT: 1,941

HARRISON AVE.

Over: DRY CREEK

1.0 N CENTRALIA, Lewis, WA

Built 1926 Load: 28.1 t ADT: 9,304

CINEBAR ROAD

Over: MILL CR.

1.33 S SR. 508, Lewis, WA

Built 1975 Load: 28.1 t ADT: 482

SALMON CREEK RD

Over: WINSTON CR.

0.19 S JCT 60073, Lewis, WA

Built 1953 Load: 28.1 t ADT: 192

NO DATA ENTERED

Over: SKATE CREEK

4.2 MILES NW OF HWY 12 ON, Lewis, WA

Built 2010 Load: 28.2 t ADT: 50

SR 508

Over: MILL CREEK

18.3 E JCT I-5, Lewis, WA

Built 1937 Load: 29.0 t ADT: 1,171

I-5

Over: RUSH RD

1.7 N JCT SR 508, Lewis, WA

Built 1953 Load: 29.0 t ADT: 25,678

I-5

Over: RUSH RD

1.7 N JCT SR 508, Lewis, WA

Built 1953 Load: 29.0 t ADT: 25,678

BUNKER CREEK RD

Over: BUNKER CR.

6.5 W CHEHALIS, Lewis, WA

Built 1983 Load: 29.0 t ADT: 676

BOISTFORT RD.

Over: S.FORK CHEHALIS RIVER

8.0 SW CHEHALIS, Lewis, WA

Built 1982 Load: 29.0 t ADT: 847

BUNKER CREEK RD

Over: DEEP CR.

6.5 W CHEHALIS, Lewis, WA

Built 1983 Load: 29.0 t ADT: 676

SILVERBROOK ROAD

Over: SURREY CREEK

2.5 E RANDLE, Lewis, WA

Built 1975 Load: 29.0 t ADT: 95

TUCKER RD.

Over: LACAMAS CR.

0.01 S SR 12, Lewis, WA

Built 1974 Load: 29.0 t ADT: 1,205

TAUSCHER ROAD

Over: N FK NEWAUKUM RIVER

2.0 E FOREST, Lewis, WA

Built 1991 Load: 29.0 t ADT: 270

KRUGER ROAD

Over: MID FK NEWAUKUM RIVER

2.0 N ONALASKA, Lewis, WA

Built 1950 Load: 29.0 t ADT: 248

COUGHLIN ROAD

Over: S FK NEWAUKUM RIVER

1.0 E ONALASKA, Lewis, WA

Built 1922 Load: 29.0 t ADT: 27

TEMPLE ROAD

Over: DAVIS CREEK

1.0 SE MORTON, Lewis, WA

Built 1990 Load: 29.0 t ADT: 53

NO DATA ENTERED

Over: NORTH FORK CISPUS RIVER

12 MILES SE OF RANDLE (MP, Lewis, WA

Built 1951 Load: 29.1 t ADT: 372

Read our methodology — how this data is sourced, computed, and verified.

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

Reviewed byPlainbridges Editorial, Plain Bridges Editorial Team · June 6, 2026