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:

BLANCHARD ROAD

Over: SCAMMON CREEK

1.0 SW CENTRALIA, Lewis, WA

Built 1955 Load: 35.4 t ADT: 173

SKATE CREEK ROAD

Over: COWLITZ OVERFLOW

0.5 NW PACKWOOD, Lewis, WA

Built 1955 Load: 35.4 t ADT: 1,359

MAGNUS RD

Over: KEARNEY CR

9.0 E ONALASKA, Lewis, WA

Built 1985 Load: 35.4 t ADT: 36

HOWE ROAD

Over: SKOOK CREEK

4.9 NW TOLEDO, Lewis, WA

Built 2003 Load: 35.4 t ADT: 40

NO DATA ENTERED

Over: NORTH FORK CISPUS RIVER

11 1/2 MILES SOUTH OF RAN, Lewis, WA

Built 1956 Load: 35.8 t ADT: 96

SR 6

Over: CHEHALIS RIVER

21.9 E PACIFIC CO, Lewis, WA

Built 1971 Load: 36.3 t ADT: 7,052

NO DATA ENTERED

Over: SMITH CREEK

4.3 MILES SE OF JCT HWY 1, Lewis, WA

Built 1969 Load: 36.3 t ADT: 20

NORTH FORK RD

Over: N.FORK NEWAUKUM RIVER

4.5 NE FOREST, Lewis, WA

Built 1980 Load: 36.3 t ADT: 441

TWIN OAKS ROAD

Over: STEARNS CR.

2.5 SW CHEHALIS, Lewis, WA

Built 1979 Load: 36.3 t ADT: 923

MINKLER ROAD

Over: OLEQUA CREEK

1.0 W ST. URBAN, Lewis, WA

Built 1951 Load: 36.3 t ADT: 691

US 12

Over: COWLITZ RIVER

7.8 E JCT SR 131, Lewis, WA

Built 1948 Load: 37.2 t ADT: 2,648

NO DATA ENTERED

Over: YELLOWJACKET CREEK

RANDLE TO 25, 23, 28 RD., Lewis, WA

Built 1976 Load: 37.2 t ADT: 437

PLEASANT VALLEY RD

Over: EAST CREEK

0.3 W JCT SR 7, Lewis, WA

Built 1976 Load: 37.2 t ADT: 189

WILSON ROAD

Over: KLICKITAT CREEK

2.0 W MOSSYROCK, Lewis, WA

Built 1957 Load: 37.2 t ADT: 105

KIONA RD

Over: KIONA CR.

0.35 SW JCT 75990, Lewis, WA

Built 1962 Load: 37.2 t ADT: 724

DEEP CREEK ROAD

Over: DEEP CREEK

03.45 N JCT 24034, Lewis, WA

Built 1978 Load: 37.2 t ADT: 55

KING ROAD

Over: KING CREEK

1.6 W WINLOCK, Lewis, WA

Built 1958 Load: 37.2 t ADT: 225

DEEP CREEK ROAD

Over: DEEP CREEK

3.18 N JCT 24034, Lewis, WA

Built 1978 Load: 38.1 t ADT: 66

KOLLOCK RD

Over: OLEQUA CREEK

0.19 SE JCT.93000, Lewis, WA

Built 1977 Load: 38.1 t ADT: 45

PLUM ST

Over: CHINA CREEK

.2 N JCT. SR 507, Lewis, WA

Built 1944 Load: 38.1 t ADT: 147

ROUNDTREE ROAD

Over: LOST VALLEY CREEK

0.5 W BOISTFORT, Lewis, WA

Built 1960 Load: 39.0 t ADT: 32

WALKER ROAD

Over: BRANCH FOSTER CREEK

2.5 SW TOLEDO, Lewis, WA

Built 1957 Load: 39.0 t ADT: 76

SPENCER ROAD

Over: BLUE CREEK

5.5 SW SALKUM, Lewis, WA

Built 1958 Load: 39.0 t ADT: 363

CHILVERS RD.

Over: MILL CR.

1.00 N LITTELL, Lewis, WA

Built 1980 Load: 39.0 t ADT: 774

ELK CREEK RD.

Over: ELK CREEK

0.02 W JCT 26890, Lewis, WA

Built 1952 Load: 39.9 t ADT: 95

JACKSON HWY

Over: NEWAUKUM OVERFLOW

2.56 N JCT SR 508, Lewis, WA

Built 1926 Load: 39.9 t ADT: 3,427

JACKSON HWY.

Over: NEWAUKUM OVERFLOW

2.49 N JCT SR 508, Lewis, WA

Built 1926 Load: 39.9 t ADT: 3,427

JACKSON HWY.

Over: NEWAUKUM OVERFLOW

2.45 N JCT SR 508, Lewis, WA

Built 1926 Load: 39.9 t ADT: 3,427

NO DATA ENTERED

Over: LITTLE NISQUALLY RIVER

12.9 MILES WEST OF HWY 7, Lewis, WA

Built 1974 Load: 40.0 t ADT: 30

LABREE ROAD

Over: NEWAUKUM RIVER

1.0 S CHEHALIS, Lewis, WA

Built 1970 Load: 41.7 t ADT: 750

US 12

Over: JOHNSON CR

13.3 E JCT SR 131, Lewis, WA

Built 1962 Load: 42.6 t ADT: 2,593

BAKER ROAD

Over: SMITH CREEK

3.0 SW PACKWOOD, Lewis, WA

Built 1936 Load: 42.6 t ADT: 23

LINCOLN CREEK RD

Over: LINCOLN CR.

0.02 E JCT 10008, Lewis, WA

Built 1997 Load: 42.6 t ADT: 269

DREWS PRAIRIE ROAD

Over: LACAMAS CREEK

1.0 W TOLEDO, Lewis, WA

Built 1971 Load: 43.5 t ADT: 309

NO DATA ENTERED

Over: SKATE CREEK

5.7 MILES NE OF HWY12 ON, Lewis, WA

Built 1990 Load: 44.0 t ADT: 371

CRAIG RD.

Over: SKATE CREEK

1.5 NW PACKWOOD, Lewis, WA

Built 1978 Load: 44.4 t ADT: 125

SR 6 RAMP TO SB I5

Over: DILLENBAUGH CR

6.3 E JCT SR 603, Lewis, WA

Built 1976 Load: 45.4 t ADT: 3,450

BAKER ROAD

Over: VEACH CREEK

2.9 SW PACKWOOD, Lewis, WA

Built 1936 Load: 45.4 t ADT: 18

JORGENSEN RD.

Over: S.FORK NEWAUKUM RIVER

0.44 SE JCT SR 508, Lewis, WA

Built 1996 Load: 45.4 t ADT: 798

CANNON RD.

Over: BUTTER CREEK

2.83 N JCT US 12, Lewis, WA

Built 1976 Load: 46.3 t ADT: 757

LEONARD ROAD

Over: S. FORK NEWAUKUM RIVER

0.3 S. ONALASKA, Lewis, WA

Built 1992 Load: 47.2 t ADT: 1,929

CLINE ROAD

Over: KILBORN CR

8.0 E RANDAL, Lewis, WA

Built 2000 Load: 47.2 t ADT: 45

GALVIN RD.

Over: CHEHALIS RIVER OVERFLOW

1.23 WEST JCT 91000, Lewis, WA

Built 1993 Load: 49.9 t ADT: 1,941

US 12

Over: SILVER CREEK

1.7 E JCT SR 131, Lewis, WA

Built 1957 Load: 50.8 t ADT: 4,072

GISH ROAD

Over: S FK NEWAUKUM RIVER

4.0 W ONALASKA, Lewis, WA

Built 1996 Load: 50.8 t ADT: 495

TAUSCHER ROAD

Over: MID FK NEWAUKUM RIVER

2.0 E FOREST, Lewis, WA

Built 1951 Load: 57.0 t ADT: 39

NORTH FORK ROAD

Over: N FORK NEWAUKUM R

0.7 NE JCT 94000, Lewis, WA

Built 2000 Load: 58.0 t ADT: 1,259

JONES ROAD

Over: SO. FORK CHEHALIS RIVER

6.0 S BOISTFORT, Lewis, WA

Built 2004 Load: 64.4 t ADT: 11

US 12

Over: OLIVER CREEK

15.3 E JCT SR 7, Lewis, WA

Built 1926 Load: 67.1 t ADT: 4,752

MINERAL CREEK ROAD

Over: MINERAL CREEK

1.8 E MINERAL, Lewis, WA

Built 2005 Load: 67.1 t ADT: 168

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