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)

JACKSON HWY

Good

Over: BRANCH LACAMAS CR.

2.49 S JCT US 12, Lewis, WA

Built 1926 Load: 13.6 t ADT: 985

JACKSON HWY

Good

Over: LACAMAS CR.

2.72 S JCT US 12, Lewis, WA

Built 1926 Load: 13.6 t ADT: 985

JACKSON HWY

Good

Over: LACAMAS CR.

2.76 S JCT US 12, Lewis, WA

Built 1926 Load: 13.6 t ADT: 936

SR 505

Good

Over: SALMON CREEK

13.5 E JCT I-5, Lewis, WA

Built 1951 Load: 15.2 t ADT: 584

US 12

Good

Over: SMITH CR

12.9 E JCT SR 131, Lewis, WA

Built 1962 Load: 16.2 t ADT: 2,593

FAS 1027

Good

Over: BN RR TOWER AVE NORTHUP

00.0 S JCT. CHESTNU, Lewis, WA

Built 1971 Load: 16.3 t ADT: 5,740

FAS 1027

Good

Over: BN RR, GOLD ST,NORTHUP S

00.0 N JCT. SUMMA S, Lewis, WA

Built 1971 Load: 16.3 t ADT: 5,843

SR 508

Good

Over: CINEBAR CREEK

19.5 E JCT I-5, Lewis, WA

Built 1946 Load: 17.5 t ADT: 1,171

STEVENS CANYON ROA

Good

Over: RAVINE

12.1 MI. W. OF JCT. HWY., Lewis, WA

Built 1955 Load: 18.1 t ADT: 1,500

PANISCO ROAD

Good

Over: MILL CREEK

9.0 E ONALASKA, Lewis, WA

Built 1973 Load: 19.0 t ADT: 45

HENRIOT ROAD

Good

Over: LACAMAS CREEK

3.5 N TOLEDO, Lewis, WA

Built 1975 Load: 19.0 t ADT: 304

FAIR ST EXTENSION

Good

Over: SALZER CREEK

E. C/L CENTRALIA, Lewis, WA

Built 1971 Load: 19.0 t ADT: 66

US 12

Good

Over: LACAMAS CREEK

6.7 E JCT I-5, Lewis, WA

Built 1921 Load: 19.8 t ADT: 10,017

SR 122

Good

Over: TILTON RIVER

3.6 E JCT US 12, Lewis, WA

Built 1961 Load: 20.0 t ADT: 739

INDEPENDENCE ROAD

Good

Over: INDEPENDENCE CREEK

0.23 N JCT 10000, Lewis, WA

Built 1956 Load: 20.0 t ADT: 523

US 12

Good

Over: LUNCH CREEK

9.4 E JCT SR 7, Lewis, WA

Built 1924 Load: 20.4 t ADT: 4,752

US 12

Good

Over: HALL CREEK

14.0 E JCT SR 131, Lewis, WA

Built 1928 Load: 20.4 t ADT: 2,593

US 12

Good

Over: DAVIS CREEK

6.8 E JCT SR 131, Lewis, WA

Built 1957 Load: 20.7 t ADT: 2,648

FRASE RD.

Good

Over: KEARNEY CR.

0.22 S JCT. SR.508, Lewis, WA

Built 1967 Load: 21.8 t ADT: 4

SR 122

Good

Over: COWLITZ RIVER

6.6 E JCT US 12, Lewis, WA

Built 1961 Load: 22.7 t ADT: 777

GOODRICH ROAD

Good

Over: CHEHALIS SLOUGH

1.0 N CENTRALIA, Lewis, WA

Built 1961 Load: 22.7 t ADT: 180

CARR ROAD

Good

Over: CARR CREEK

2.74 MILES S. US HWY 12, Lewis, WA

Built 2009 Load: 22.7 t ADT: 10

PLEASANT VALLEY RD

Good

Over: UNNAMED TRIBUTARY

2.5 NW JCT SR 7, Lewis, WA

Built 2017 Load: 23.7 t ADT: 13

US 12

Good

Over: COWLITZ R OVERFLOW

8.5 E JCT SR 131, Lewis, WA

Built 1958 Load: 24.0 t ADT: 2,648

GARRARD CREEK RD.

Good

Over: INDEPENDENCE CREEK

0.23 W JCT 91008, Lewis, WA

Built 1965 Load: 24.5 t ADT: 192

HAYWIRE ROAD

Good

Over: STEARNS CREEK

2.65 West Of Napavine, Lewis, WA

Built 1940 Load: 24.5 t ADT: 238

BISHOP ROAD

Good

Over: DILLENBAUGH CREEK

1.11 SW CHEHALIS, Lewis, WA

Built 1955 Load: 24.5 t ADT: 3,654

NO DATA ENTERED

Good

Over: BUTTER CREEK

4.2 MILES NW FROM HWY12 O, Lewis, WA

Built 1963 Load: 25.4 t ADT: 8

ALVORD ROAD

Good

Over: SALZER CREEK

0.5 E CENTRALIA, Lewis, WA

Built 1964 Load: 25.4 t ADT: 25

W. Maple St

Good

Over: China Creek

W.of Tower Ave, Lewis, WA

Built 2003 Load: 25.4 t ADT: 1,414

US 12

Good

Over: KIONA CREEK

12.9 E JCT SR 7, Lewis, WA

Built 1925 Load: 26.2 t ADT: 4,752

ELK CREEK RD

Good

Over: EIGHT CR.

3.W OF DOTY, Lewis, WA

Built 1983 Load: 26.3 t ADT: 95

STEVENS CANYON ROA

Good

Over: RAVINE

12.1 MILES WEST OF JCT. U, Lewis, WA

Built 1955 Load: 26.3 t ADT: 1,500

SR 12

Good

Over: HOPKIN CREEK

5.5 E JCT SR 131, Lewis, WA

Built 1958 Load: 26.6 t ADT: 2,648

CHANDLER ROAD

Good

Over: DUNN CREEK

1.0 N DRYAD, Lewis, WA

Built 1962 Load: 27.2 t ADT: 69

PETERS RD.

Good

Over: PETERS CR.

0.26 S JCT SR 12, Lewis, WA

Built 1964 Load: 27.2 t ADT: 192

PETERS RD.

Good

Over: PETERS CR.

0.73 S JCT SR 12, Lewis, WA

Built 1964 Load: 27.2 t ADT: 244

SR 131

Good

Over: SILER CREEK

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

Built 1965 Load: 28.2 t ADT: 305

MIDDLE FORK ROAD

Good

Over: MIDDLE FORK NEWAUKUM

2.5 N JCT SR 508, Lewis, WA

Built 2019 Load: 28.2 t ADT: 482

BRIM CREEK ROAD

Good

Over: STILLWATER CREEK

2.0 W VADER, Lewis, WA

Built 1960 Load: 29.0 t ADT: 95

ROUNDTOP ROAD

Good

Over: ROUND TOP CREEK

1.0 SW MINERAL, Lewis, WA

Built 1989 Load: 29.0 t ADT: 18

US 12

Good

Over: KLICKITAT CREEK

4.0 E JCT SR 122, Lewis, WA

Built 1937 Load: 29.9 t ADT: 6,490

MARSH AVENUE

Good

Over: CHINA CREEK

00.1 N JCT. SR507, Lewis, WA

Built 1994 Load: 30.1 t ADT: 553

SR 508

Good

Over: GHEER CREEK

7.6 E JCT I-5, Lewis, WA

Built 1947 Load: 30.8 t ADT: 4,269

PLEASANT VALLEY RD

Good

Over: STEARNS CREEK

3.0 SW.NAPAVINE, Lewis, WA

Built 1982 Load: 30.8 t ADT: 407

SR 6

Good

Over: JONES CREEK

5.7 E PACIFIC CO, Lewis, WA

Built 1931 Load: 31.1 t ADT: 2,463

US 12

Good

Over: CREEK TWIN CANYON

2.6 E JCT SR 122, Lewis, WA

Built 1967 Load: 31.7 t ADT: 4,729

STOWELL ROAD

Good

Over: MILL CREEK

0.5 N SALKUM, Lewis, WA

Built 1955 Load: 31.7 t ADT: 325

SCHEUBER ROAD

Good

Over: ALEXANDER CR.

1.7 N JCT SR 6, Lewis, WA

Built 1978 Load: 31.7 t ADT: 888

MASCHKE ROAD

Good

Over: STILLWATER CREEK

1.0 W VADER, Lewis, WA

Built 1974 Load: 31.7 t ADT: 37

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