Lewis County, WA

422 public highway bridges

Lewis County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Lewis County, Washington contains 422 public highway bridges. Roughly 37.4% are rated “Good,” 54.5% “Fair,” and 3.3% “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.

422
Total Bridges
37.4%
Good
54.5%
Fair
3.3%
Poor Condition

Condition Distribution

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

All Bridges (422)

STATE PARKS TRAIL

Unknown

Over: STATE ROUTE 6

4.9 E PACIFIC CO, Lewis, WA

Built 1931 ADT: 2,463

I-5

Unknown

Over: SR 507 MELLEN ST

JCT I-5, Lewis, WA

Built 1951 ADT: 6,179

WEST ST

Unknown

Over: I-5

0.4 N JCT SR 6, Lewis, WA

Built 1953 ADT: 76,505

I-5

Unknown

Over: COWLITZ RIVER

2.0 N COWLITZ CO, Lewis, WA

Built 1953 ADT: 360

I-5

Unknown

Over: COWLITZ RIVER

2.0 N COWLITZ CO, Lewis, WA

Built 1953 ADT: 360

SR 505

Unknown

Over: I-5

JCT SR 505, Lewis, WA

Built 1954 ADT: 39,562

13TH ST RICE

Unknown

Over: I-5

5.5 N JCT SR 508, Lewis, WA

Built 1958 ADT: 60,438

US 12

Unknown

Over: I-5

5.0 N JCT SR 505, Lewis, WA

Built 1958 ADT: 42,189

SR 506

Unknown

Over: I-5

JCT SR 506, Lewis, WA

Built 1958 ADT: 41,665

BRIDGEOVER RD

Unknown

Over: US 12

5.0 E JCT SR 7, Lewis, WA

Built 1966 ADT: 4,992

I-5

Unknown

Over: HARRISON AVE

1.1 N JCT SR 507, Lewis, WA

Built 1972 ADT: 24,802

ROGERS RD

Unknown

Over: I-5

0.2 N COWLITZ CO, Lewis, WA

Built 1976 ADT: 41,227

KOONTZ RD

Unknown

Over: I-5

1.0 N JCT US 12, Lewis, WA

Built 1976 ADT: 51,653

PARK RD

Unknown

Over: I-5

3.0 N JCT SR 505, Lewis, WA

Built 1977 ADT: 44,966

SR 6

Unknown

Over: I-5

6.9 N JCT SR 508, Lewis, WA

Built 1980 ADT: 65,022

SR 508

Unknown

Over: I-5

2.6 N JCT US 12, Lewis, WA

Built 1986 ADT: 50,392

LABREE ROAD

Unknown

Over: I-5

3.7 N JCT SR 508, Lewis, WA

Built 2008 ADT: 59,955

SR 507 NB

Unknown

Over: I-5, RAMP

3.4 N JCT SR 6, Lewis, WA

Built 2014 ADT: 65,245

CHAMBER WAY

Unknown

Over: I-5

1.1 N JCT SR 6, Lewis, WA

Built 2018 ADT: 64,598

PEDESTRIANS

Unknown

Over: SR 6

23.4 E PACIFIC CO, Lewis, WA

Built 2023 ADT: 8,850

US 12

Fair

Over: SLIDE AREA

5.0 E JCT SR 123, Lewis, WA

Built 1968 Load: 12.6 t ADT: 1,729

JACKSON HWY

Fair

Over: LAUSSIER CR.

4.36 S JCT US 12, Lewis, WA

Built 1926 Load: 13.6 t ADT: 932

NE EXHIBITOR RD.

Fair

Over: SALZER CREEK

0.1 W OF NE KRESKY, Lewis, WA

Built 1971 Load: 13.6 t ADT: 1,951

N NATIONAL AVE

Fair

Over: SALZER CREEK

0.1 N OF NE HAMPE, Lewis, WA

Built 1936 Load: 13.6 t ADT: 8,038

RIVERSIDE DR

Fair

Over: DILLENBAUGH CREEK

RIVERSIDE DRIVE, Lewis, WA

Built 1952 Load: 13.6 t ADT: 3,910

PARADISE CONNECTOR

Fair

Over: PARADISE RIVER

16 MILES NORTHEAST OF NIS, Lewis, WA

Built 1926 Load: 13.6 t ADT: 1,500

LINCOLN CREEK RD

Fair

Over: LINCOLN CREEK

9.0 NW CENTRALIA, Lewis, WA

Built 1977 Load: 14.5 t ADT: 266

NO DATA ENTERED

Fair

Over: CISPUS RIVER

9 MILES SOUTH OF HWY 12 J, Lewis, WA

Built 1955 Load: 14.9 t ADT: 650

WILDWOOD ROAD

Fair

Over: STILLWATER CREEK

0.04 NW JCT SR 506, Lewis, WA

Built 1962 Load: 14.9 t ADT: 239

SR 6

Fair

Over: ROCK CR NP RY-ABANDONED

0.4 E PACIFIC CO, Lewis, WA

Built 1930 Load: 15.6 t ADT: 1,561

YEW ST

Fair

Over: CHINA CREEK

.3 N JCT. SR 507, Lewis, WA

Built 1944 Load: 16.3 t ADT: 4,563

TEAGUE ROAD

Fair

Over: LINCOLN CREEK

5.0 W CENTRALIA, Lewis, WA

Built 1964 Load: 16.5 t ADT: 43

SR 6

Fair

Over: CHEHALIS R

3.4 E PACIFIC CO, Lewis, WA

Built 1931 Load: 16.8 t ADT: 1,801

US 12

Fair

Over: GULCH

6.2 E JCT SR 123, Lewis, WA

Built 1949 Load: 17.2 t ADT: 1,729

RUSH ROAD

Fair

Over: NEWAUKUM RIVER

0.10 N JCT 40028, Lewis, WA

Built 1953 Load: 17.2 t ADT: 5,801

HENDRICKSON ROAD

Fair

Over: STILLWATER CREEK

2.0 W VADER, Lewis, WA

Built 1927 Load: 17.2 t ADT: 78

HOLOCOMB ROAD

Fair

Over: Stearns Creek

2.3 West Napavine, Lewis, WA

Built 1940 Load: 17.2 t ADT: 163

STEVENS CANYON ROA

Fair

Over: RAVINE

12.6 MILES WEST OF JCT. U, Lewis, WA

Built 1955 Load: 17.2 t ADT: 1,500

I-5

Fair

Over: CW RY

6.5 N JCT SR 508, Lewis, WA

Built 1953 Load: 17.5 t ADT: 72,086

NO DATA ENTERED

Fair

Over: BIG CREEK

0.1 MILE SOUTH OF JCT BS, Lewis, WA

Built 1958 Load: 17.5 t ADT: 16

LEONARD ROAD

Fair

Over: LACAMAS CREEK

0.63 N JCT SR 12, Lewis, WA

Built 1962 Load: 18.1 t ADT: 1,725

MIDDLE FORK RD.

Fair

Over: S. FORK NEWAUKUM RIVER

0.4 E JCT 94000, Lewis, WA

Built 1956 Load: 18.1 t ADT: 1,424

STEVENS CANYON ROA

Fair

Over: MUDDY FORK

10.3 miles west of jct. U, Lewis, WA

Built 1952 Load: 18.1 t ADT: 1,375

CAMPGROUND ROAD

Fair

Over: OHANAPECOSH RIVER

0.5 MILES NORTHWEST OF JC, Lewis, WA

Built 1960 Load: 18.1 t ADT: 1,375

STEVENS CANYON ROA

Fair

Over: RAVINE

12.0 MILES WEST OF JCT. U, Lewis, WA

Built 1952 Load: 18.1 t ADT: 1,500

CENTRALIA ALPHA RD

Fair

Over: NO.FK NEWAUKUM RIVER

0.04 SE JCT 46000, Lewis, WA

Built 1960 Load: 19.0 t ADT: 839

NORTH FORK RD.

Fair

Over: S. FORK NEWAUKUM RIVER

0.34 NE 94000, Lewis, WA

Built 1958 Load: 19.0 t ADT: 1,493

BOISTFORT RD.

Fair

Over: S.FORK CHEHALIS RIVER

1.08 S SR 6, Lewis, WA

Built 1958 Load: 19.0 t ADT: 686

WALNUT ST

Fair

Over: CHINA CREEK

.4 N JCT. SR 507, Lewis, WA

Built 1946 Load: 19.0 t

OAK ST

Fair

Over: CHINA CREEK

.1 S JCT. FAS1027, Lewis, WA

Built 1941 Load: 19.0 t ADT: 209

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.