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:

US 12

Over: LAKE CREEK

10.0 E JCT SR 122, Lewis, WA

Built 1966 Load: 29.2 t ADT: 4,729

SR 508

Over: KEARNEY CREEK

16.0 E JCT I-5, Lewis, WA

Built 1937 Load: 29.9 t ADT: 1,672

SR 508

Over: ALDER CREEK

22.7 E JCT I-5, Lewis, WA

Built 1937 Load: 29.9 t ADT: 1,171

SR 7

Over: NISQUALLY RIVER

16.3 N JCT SR 508, Lewis, WA

Built 1953 Load: 29.9 t ADT: 2,818

MINERAL CREEK ROAD

Over: ROUNDTOP CREEK

0.5 E MINERAL, Lewis, WA

Built 1967 Load: 29.9 t ADT: 364

LECH ROAD

Over: JONES CREEK

1.0 NE PE ELL, Lewis, WA

Built 1953 Load: 29.9 t ADT: 14

BIG HANAFORD RD.

Over: SOUTH HANAFORD CR.

5. E CENTRALIA, Lewis, WA

Built 1974 Load: 29.9 t ADT: 561

INGALLS RD.

Over: LINCOLN CR.

2.10 N JCT 24034, Lewis, WA

Built 1953 Load: 30.1 t ADT: 248

US 12

Over: COWLITZ R

0.8 E JCT SR 122, Lewis, WA

Built 1968 Load: 30.8 t ADT: 4,729

SHOREY RD

Over: RAIL ROAD DITCH

0.11 S RD 40073, Lewis, WA

Built 1955 Load: 30.8 t ADT: 2,814

STEARNS HILL ROAD

Over: BUNKER CREEK

6.0 NW ADNA, Lewis, WA

Built 1984 Load: 30.8 t ADT: 9

NORTH FORK RD

Over: N. FK NEWAUKUM RIVER

6.5 NE FOREST, Lewis, WA

Built 1963 Load: 30.8 t ADT: 212

BIG HANAFORD RD.

Over: HANAFORD CK.

3.0 E CENTRALIA, Lewis, WA

Built 1974 Load: 30.8 t ADT: 798

BEAVER CREEK RD

Over: SOUTH FORK CHEHALIS RIVE

1.2 SW CURTIS, Lewis, WA

Built 1982 Load: 30.8 t ADT: 109

NO DATA ENTERED

Over: NORTH FORK TILTON RIVER

2 MILES NW OF JUNCTION WI, Lewis, WA

Built 1973 Load: 30.9 t ADT: 128

WILDWOOD ROAD

Over: S.FORK CHEHALIS RIVER

11.5 S CURTIS, Lewis, WA

Built 1970 Load: 31.7 t ADT: 174

NO DATA ENTERED

Over: LITTLE NISQUALLY RIVER

12.3 MILES WEST OF HWY 7, Lewis, WA

Built 1971 Load: 31.8 t ADT: 30

NO DATA ENTERED

Over: GREENHORN CREEK

10.6 MILES SOUTHEAST OF H, Lewis, WA

Built 1954 Load: 32.4 t ADT: 98

SR 507 & PEARL ST

Over: CHINA CRK

0.7 S JCT SR 507, Lewis, WA

Built 1918 Load: 32.7 t ADT: 5,686

SR 508

Over: CREEK

24.1 E JCT I-5, Lewis, WA

Built 1937 Load: 32.7 t ADT: 1,171

US 12

Over: RAINEY CREEK OVERFLOW

10.4 E JCT SR 7, Lewis, WA

Built 1964 Load: 32.7 t ADT: 4,752

I-5

Over: SKOOKUMCHUCK RIVER

0.7 N JCT SR 507, Lewis, WA

Built 1951 Load: 32.7 t ADT: 24,794

I-5

Over: SKOOKUMCHUCK RIVER

0.7 N JCT SR 507, Lewis, WA

Built 1951 Load: 32.7 t ADT: 24,794

US 12

Over: CORTRIGHT CREEK

1.7 E JCT SR 123, Lewis, WA

Built 1983 Load: 32.7 t ADT: 1,590

STOWELL ROAD

Over: MILL CREEK

1.5 N SALKUM, Lewis, WA

Built 1960 Load: 32.7 t ADT: 332

ROCK CREEK RD

Over: ROCK CR.

2.5 SW PE ELL, Lewis, WA

Built 1985 Load: 32.7 t ADT: 17

PIGEON SPRINGS RD

Over: BERNIER CREEK

6.0 NE ONALASKA, Lewis, WA

Built 1954 Load: 32.7 t ADT: 35

PE ELL MCDONALD RD

Over: HALFWAY CREEK

7.33 E PE ELL, Lewis, WA

Built 1956 Load: 32.7 t ADT: 280

CURTIS HILL RD.

Over: LAKE CR.

3. SW ADNA, Lewis, WA

Built 1960 Load: 32.7 t ADT: 642

KING ROAD

Over: LAKE CREEK

0.62 E JCT 92006, Lewis, WA

Built 1960 Load: 32.7 t ADT: 148

OSBORN ROAD

Over: BIG CREEK

11.0 E ELBE, Lewis, WA

Built 1968 Load: 32.7 t ADT: 301

HWY 603

Over: CHEHALIS RIVER

0.15 S.E. SR 6, Lewis, WA

Built 1991 Load: 32.7 t ADT: 1,697

BERRY ROAD

Over: STEARNS CREEK

4.0 W NAPAVINE, Lewis, WA

Built 1994 Load: 32.7 t ADT: 20

GUERRIER ROAD

Over: S FK NEWAUKUM RIVER

2.0 SE FOREST, Lewis, WA

Built 1996 Load: 32.7 t ADT: 261

FALLS ROAD

Over: LAMBERT CREEK

8.19 SW RANDLE, Lewis, WA

Built 2004 Load: 32.7 t ADT: 99

NO DATA ENTERED

Over: WALUPT CREEK

16.5 MILES SE OF HWY 12 (, Lewis, WA

Built 1965 Load: 33.6 t ADT: 69

ELK CREEK RD.

Over: DEER CREEK

0.6 W DOTY, Lewis, WA

Built 1952 Load: 33.6 t ADT: 202

PE ELL MCDONALD RD

Over: HALFWAY CREEK

6.4 E PE ELL, Lewis, WA

Built 1958 Load: 33.6 t ADT: 229

CENTRALIA ALPHA RD

Over: SALZER CR.

1. SE.CENTRALIA, Lewis, WA

Built 1983 Load: 33.6 t ADT: 1,732

NICHOLSON ROAD

Over: LACAMAS CREEK

0.45 N JCT. 56000, Lewis, WA

Built 1972 Load: 33.6 t ADT: 98

BEAM RD.

Over: JONES CR.

0.41 E JCT SR.6, Lewis, WA

Built 1972 Load: 33.6 t ADT: 23

TOOLEY ROAD

Over: SALMON CREEK

2.0 SE TOLEDO, Lewis, WA

Built 1977 Load: 33.6 t ADT: 103

PEAR ST

Over: CHINA CREEK

.3 N JCT. SR 507, Lewis, WA

Built 1942 Load: 33.6 t ADT: 1,270

TAYLOR ROAD

Over: BRANCH NEWAUKUM RIVER

2.5 NE NAPAVINE, Lewis, WA

Built 1954 Load: 34.5 t ADT: 80

BUNKER ROAD

Over: BUNKER CREEK

9.0 NW ADNA, Lewis, WA

Built 1955 Load: 34.5 t ADT: 25

TOLEDO SALMON CRK

Over: SALMON CREEK

1.39 SE JCT 50850, Lewis, WA

Built 1977 Load: 34.5 t ADT: 31

BIG HANAFORD RD.

Over: HANAFORD CR.

7. NE CENTRALIA, Lewis, WA

Built 1955 Load: 34.5 t ADT: 189

NO DATA ENTERED

Over: WINSTON CREEK

ABOUT 16 MILES SOUTHWEST, Lewis, WA

Built 1992 Load: 34.7 t ADT: 18

CISPUS RD.

Over: SILER CR.

0.03 NW RD 70301, Lewis, WA

Built 1952 Load: 35.3 t ADT: 254

NO DATA ENTERED

Over: PINTO CREEK

ABOUT 10 MILES SOUTH OF H, Lewis, WA

Built 1954 Load: 35.4 t ADT: 59

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