Cowlitz County, WA

167 public highway bridges

Cowlitz County Bridge Snapshot

Cowlitz County, Washington contains 167 public highway bridges in the FHWA National Bridge Inventory. Roughly 35.9% are rated “Good,” 40.7% “Fair,” 3.6% “Poor,” and 3.6% 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.

167

Total Bridges

35.9%

Good

3.6%

Poor

3.6%

Structurally Deficient

Condition Distribution

Good

35.9% (60)

Fair

40.7% (68)

Poor

3.6% (6)

SD

3.6% (6)

All Bridges (167)

Sort:

HOLCOMB RD

Over: C&C RAILROAD

0.12 E PAC AVE N (MP 2.94, Cowlitz, WA

Built 1968 Load: 18.8 t ADT: 300

OLD PACIFIC HWY N

Over: TOUTLE RIVER

0.29 SE I-5 EXIT 52, Cowlitz, WA

Built 1935 Load: 19.0 t ADT: 509

I-5

Over: C&C RY & N PACIFIC AVE

2.2 N JCT SR 4, Cowlitz, WA

Built 1976 Load: 19.8 t ADT: 30,149

I-5

Over: C&C RY & COUNTY RD

2.2 N JCT SR 4, Cowlitz, WA

Built 1976 Load: 19.8 t ADT: 30,149

W KALAMA RIVER RD

Over: BNRR

0.13 E I-5 EXIT 32, Cowlitz, WA

Built 1976 Load: 20.0 t ADT: 1,250

OAK ST

Over: BNRR & HENDRICKSON DR

0.1 MI W SR 5, Cowlitz, WA

Built 1968 Load: 20.4 t ADT: 800

I-5

Over: COWEEMAN RIVER

2.4 N JCT SR 432, Cowlitz, WA

Built 1979 Load: 20.7 t ADT: 28,653

I-5

Over: COWEEMAN RIVER

2.4 N JCT SR 432, Cowlitz, WA

Built 1980 Load: 20.7 t ADT: 28,653

SR 433

Over: COLUMBIA R @ LONGVIEW

OREGON LINE, Cowlitz, WA

Built 1929 Load: 20.9 t ADT: 20,865

20TH AVE.

Over: LAKE SACAJAWEA

JCT 20th AVE. & LAKE SACA, Cowlitz, WA

Built 1940 Load: 21.1 t ADT: 3,133

ABERNATHY CREEK RD

Over: ABERNATHY CREEK

4.34 N OF SR 4 (MP 48.32), Cowlitz, WA

Built 1962 Load: 21.7 t ADT: 200

SR 4

Over: HALF BR W OF BUNKER HILL

4.1 E WAHKIAKUM CO, Cowlitz, WA

Built 1930 Load: 21.8 t ADT: 4,665

SOUTH TOUTLE RD

Over: SOUTH TOUTLE RIVER

1.16 E SR 504 (MP 10.55), Cowlitz, WA

Built 1971 Load: 22.0 t ADT: 1,400

I-5

Over: ELM ST

8.8 N JCT SR 503, Cowlitz, WA

Built 1968 Load: 22.7 t ADT: 33,882

SR 4

Over: ABERNATHY CREEK

2.5 E WAHKIAKUM CO, Cowlitz, WA

Built 1930 Load: 24.3 t ADT: 4,665

SR 4

Over: HALF BR W OF BUNKER HILL

4.0 E WAHKIAKUM CO, Cowlitz, WA

Built 1930 Load: 24.5 t ADT: 4,665

SR 411

Over: BURLINGTON NORTHERN RR

13.3 N JCT SR 432, Cowlitz, WA

Built 1922 Load: 24.5 t ADT: 5,141

WIEST RD

Over: WIEST CREEK

0.70 N ABERNATHY RD (3.22, Cowlitz, WA

Built 1972 Load: 25.4 t ADT: 10

I-5

Over: TOUTLE RIVER

2.1 N JCT SR 504, Cowlitz, WA

Built 1969 Load: 25.9 t ADT: 22,640

I-5

Over: TOUTLE RIVER

2.1 N JCT SR 504, Cowlitz, WA

Built 1969 Load: 25.9 t ADT: 22,640

PACIFIC AVE NORTH

Over: BNRR

0.75 SW I-5 EXIT 42, Cowlitz, WA

Built 1994 Load: 26.2 t ADT: 1,300

CARLON LOOP RD

Over: COAL CREEK

0.07 S COAL CRK RD (3.62), Cowlitz, WA

Built 1963 Load: 27.2 t ADT: 88

I-5

Over: COWEEMAN RIVER

1.4 N JCT SR 432, Cowlitz, WA

Built 1979 Load: 27.5 t ADT: 28,653

ALLEN STREET

Over: COWLITZ R, BNRR, CITY ST

ALLEN ST OVER COWLITZ R, Cowlitz, WA

Built 2000 Load: 28.5 t ADT: 10,700

WEST SIDE HWY

Over: OLEQUA CREEK & BNRR

7.24 N SR 411 (MP 12.01), Cowlitz, WA

Built 1978 Load: 29.0 t ADT: 1,100

TALLEY WAY

Over: COWEEMAN RIVER

0.05 N ST RT 432, Cowlitz, WA

Built 1961 Load: 29.8 t ADT: 5,285

I-5

Over: LOG DUMP RD

1.6 N JCT SR 503, Cowlitz, WA

Built 1955 Load: 29.9 t ADT: 33,715

SR 504

Over: BEAR CREEK

14.3 E JCT SR 504 SP, Cowlitz, WA

Built 1990 Load: 31.7 t ADT: 648

HANSEN RD

Over: OUTLET CREEK

0.55 S SR 504 (MP 9.94), Cowlitz, WA

Built 1969 Load: 31.7 t ADT: 87

I-5

Over: BN RY

4.9 N JCT SR 503, Cowlitz, WA

Built 1972 Load: 32.7 t ADT: 36,814

MILL CREEK RD

Over: MILL CREEK

1.47 N OF SR 4 (MP 47.64), Cowlitz, WA

Built 1960 Load: 32.7 t ADT: 150

HARMONY DR

Over: COAL CREEK

0.35 NW COAL CRK RD (0.54, Cowlitz, WA

Built 1953 Load: 32.7 t ADT: 2,253

HACKETT RD

Over: COAL CREEK EAST FORK

0.30 N COAL CRK RD (5.04), Cowlitz, WA

Built 1975 Load: 32.7 t ADT: 38

FALLERT RD

Over: KALAMA RIVER

0.03 E KAL RIV RD (4.41), Cowlitz, WA

Built 1985 Load: 32.7 t ADT: 200

SLIDE CREEK RD

Over: SLIDE CREEK

1.19 N ABERNATHY RD (1.13, Cowlitz, WA

Built 1978 Load: 32.7 t ADT: 60

SR 503

Over: ROCK CR

5.4 N JCT SR 503 SPUR, Cowlitz, WA

Built 1996 Load: 33.6 t ADT: 1,668

SR 432

Over: COWLITZ RIVER & BNSF

2.0 E JCT SR 411, Cowlitz, WA

Built 1973 Load: 34.5 t ADT: 19,031

DELAMETER RD

Over: ARKANSAS CREEK

0.59 W SR 411 (MP 11.33), Cowlitz, WA

Built 1953 Load: 35.4 t ADT: 1,430

SR 432

Over: COWLITZ R & NP RY

2.0 E JCT SR 411, Cowlitz, WA

Built 1961 Load: 37.2 t ADT: 19,031

TOWER RD

Over: TOUTLE RIVER

2.92 NE SR 504 (MP 2.00), Cowlitz, WA

Built 1981 Load: 38.1 t ADT: 600

SPRUCE CREEK RD

Over: SPRUCE CREEK

0.59 W MILL CRK RD (1.00), Cowlitz, WA

Built 1966 Load: 38.2 t ADT: 100

ROSE VALLEY RD

Over: OWL CREEK

1.14 E OLD 99 S (MP 1.06), Cowlitz, WA

Built 1957 Load: 39.0 t ADT: 3,600

ROSE VALLEY RD

Over: COWEEMAN RIVER

9.41 E OLD 99 S (MP 1.06), Cowlitz, WA

Built 1974 Load: 40.8 t ADT: 420

ROSE VALLEY RD

Over: OWL CREEK

1.04 E OLD 99 S (MP 1.06), Cowlitz, WA

Built 1957 Load: 40.8 t ADT: 3,600

MILL CREEK RD

Over: MILL CREEK

1.66 N SR 4 (MP 47.64), Cowlitz, WA

Built 1960 Load: 45.4 t ADT: 145

HUNTINGTON AVE

Over: BNRR

0.13 W OF I-5 EXIT 48, Cowlitz, WA

Built 1994 Load: 48.1 t ADT: 3,650

SIGHTLY ROAD

Over: OUTLET CREEK

0.03 S SR 504 (MP 10.53), Cowlitz, WA

Built 1956 Load: 74.4 t ADT: 600

SR 503 SPUR

Over: PANAMAKER CREEK

5.8 N JCT SR 503, Cowlitz, WA

Built 1961 Load: 82.5 t ADT: 932

SR 504

Over: OUTLET CREEK

10.9 E JCT I-5, Cowlitz, WA

Built 1970 Load: 89.8 t ADT: 1,014

I-5 & PACIFIC AVE

Over: OSTRANDER CREEK

3.5 N JCT SR 4, Cowlitz, WA

Built 1965 Load: 89.8 t ADT: 57,364

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 5, 2026