Cowlitz County, WA

167 public highway bridges

Cowlitz County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Cowlitz County, Washington contains 167 public highway bridges. Roughly 35.9% are rated “Good,” 40.7% “Fair,” and 3.6% “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.

167
Total Bridges
35.9%
Good
40.7%
Fair
3.6%
Poor Condition

Condition Distribution

Good
35.9% (60)
Fair
40.7% (68)
Poor
3.6% (6)

All Bridges (167)

WEYERHAEUSER RR

Unknown

Over: STATE ROUTE 411

3.4 N JCT SR 432, Cowlitz, WA

Built 1958 ADT: 13,790

SR 4

Unknown

Over: COWLITZ R / RR / SR 411

1.8 N JCT SR 432, Cowlitz, WA

Built 1951 ADT: 12,080

SR 432

Unknown

Over: I-5

15.9 N JCT SR 503, Cowlitz, WA

Built 1959 ADT: 46,604

I-5 N-W RAMP

Unknown

Over: SR 432 E-S RAMP

2.7 E JCT SR 411, Cowlitz, WA

Built 1959 ADT: 2,536

SR 432

Unknown

Over: 3RD AVE / SR 411

JCT SR 432, Cowlitz, WA

Built 1961 ADT: 17,087

I-5

Unknown

Over: SR 503

23.1 N JCT SR 503 SPUR, Cowlitz, WA

Built 1963 ADT: 18,958

I-5

Unknown

Over: SR 503

23.1 N JCT SR 503 SPUR, Cowlitz, WA

Built 1963 ADT: 18,958

OAK STREET

Unknown

Over: I-5

9.6 N JCT SR 503, Cowlitz, WA

Built 1968 ADT: 67,764

OLD PACIFIC HWY N

Unknown

Over: I-5

2.8 N JCT SR 504, Cowlitz, WA

Built 1968 ADT: 44,018

KALAMA R RD

Unknown

Over: I-5

11.1 N JCT SR 503, Cowlitz, WA

Built 1970 ADT: 70,091

BN RY (NP)

Unknown

Over: W-S RAMP TO I-5

1.6 N JCT SR 503, Cowlitz, WA

Built 1972 ADT: 3,563

BNRR

Unknown

Over: DIKE ACCESS ROAD

1.6 N JCT SR 503, Cowlitz, WA

Built 1972 ADT: 6,096

I-5

Unknown

Over: HUNTINGTON AVE

8.1 N JCT SR 4, Cowlitz, WA

Built 1975 ADT: 2,204

I-5

Unknown

Over: HUNTINGTON AVE

8.1 N JCT SR 4, Cowlitz, WA

Built 1975 ADT: 2,204

POWELL RD

Unknown

Over: I-5

9.3 N JCT SR 4, Cowlitz, WA

Built 1975 ADT: 51,651

SR 504

Unknown

Over: I-5

10.0 N JCT SR 4, Cowlitz, WA

Built 1975 ADT: 41,919

LEXINGTON BR DR

Unknown

Over: I-5

2.8 N JCT SR 4, Cowlitz, WA

Built 1975 ADT: 53,311

PLEASANT HILL RD

Unknown

Over: I-5

3.3 N JCT SR 4, Cowlitz, WA

Built 1975 ADT: 57,364

HEADQUARTERS RD

Unknown

Over: I-5

6.3 N JCT SR 4, Cowlitz, WA

Built 1975 ADT: 55,519

SR 432

Unknown

Over: SR 411/3RD AVE

JCT SR 432, Cowlitz, WA

Built 1975 ADT: 17,087

I-5

Unknown

Over: KELSO AVE (OLD SR 431)

0.9 N JCT SR 4, Cowlitz, WA

Built 1979 ADT: 4,172

I-5

Unknown

Over: KELSO AVE (OLD SR 431)

0.9 N JCT SR 4, Cowlitz, WA

Built 1980 ADT: 4,172

GRADE ST

Unknown

Over: I-5

2.2 N JCT SR 432, Cowlitz, WA

Built 1979 ADT: 57,306

I-5

Unknown

Over: ALLEN ST / SR 4

1.3 E JCT SR 411 SP, Cowlitz, WA

Built 1981 ADT: 16,067

I-5

Unknown

Over: ALLEN ST/SR 4

1.3 E JCT SR 411 SP, Cowlitz, WA

Built 1980 ADT: 16,067

BRYNION ST

Unknown

Over: I-5

0.6 N JCT SR 4, Cowlitz, WA

Built 1980 ADT: 55,996

SR 504

Unknown

Over: SR 504 TURNAROUND

22.2 E JCT SR 504 SP, Cowlitz, WA

Built 1992 ADT: 586

S-W RAMP

Unknown

Over: W-W RAMP

JCT I-5, Cowlitz, WA

Built 2011 ADT: 1,751

SR 432 E-S RAMP

Unknown

Over: SR 432 E-E RAMP

JCT I-5, Cowlitz, WA

Built 2011 ADT: 2,007

LOGTRUCK XING

Unknown

Over: SOUTH TOUTLE ROAD

2.71S SPIRIT LK HW, Cowlitz, WA

Built 1900 ADT: 800

RR GRADE CROSSING

Unknown

Over: SOUTH TOUTLE ROAD

2.74(S)SPIRIT LK H, Cowlitz, WA

Built 1900 ADT: 800

RR GRADE XING

Unknown

Over: ALPHA DRIVE

.02 W SR 411, Cowlitz, WA

Built 1900 ADT: 1,915

RR GRADE XING

Unknown

Over: NEVADA DRIVE

.01 W SR 411, Cowlitz, WA

Built 1900 ADT: 664

ALLENDER RD

Fair

Over: STILLWATER CREEK

0.74 W OF SR 506(MP 0.86), Cowlitz, WA

Built 1958 Load: 2.7 t ADT: 20

ALLENDER RD

Fair

Over: STILLWATER CREEK

0.36 W SR 506 (MP 0.86), Cowlitz, WA

Built 1953 Load: 4.5 t ADT: 20

CLINE RD

Fair

Over: ARKANSAS CREEK

0.57 N DELAMETER RD (0.89, Cowlitz, WA

Built 1959 Load: 10.9 t ADT: 115

ALLENDER RD

Fair

Over: STILLWATER CREEK

0.97 W SR 506 (MP 0.86), Cowlitz, WA

Built 1955 Load: 12.7 t ADT: 20

WREN LOOP RD

Fair

Over: ARKANSAS CREEK

0.02 S DELAMETER RD (0.17, Cowlitz, WA

Built 1960 Load: 13.6 t ADT: 195

ABERNATHY CREEK RD

Fair

Over: ABERNATHY CREEK

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

Built 1976 Load: 15.2 t ADT: 200

I-5

Fair

Over: COWEEMAN RIVER

2.0 N JCT SR 432, Cowlitz, WA

Built 1979 Load: 15.6 t ADT: 28,653

EAST CC ST

Fair

Over: LEWIS RIVER

0.14 E SR 503 (MP 54.31), Cowlitz, WA

Built 1966 Load: 16.2 t ADT: 6,628

BARNES DR

Fair

Over: HILL CREEK

4.10 N of I-5 Exit 32, Cowlitz, WA

Built 1923 Load: 16.3 t ADT: 300

ROSE VALLEY RD

Fair

Over: GOBLE CREEK

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

Built 1958 Load: 17.2 t ADT: 750

I-5

Fair

Over: COWEEMAN RIVER

1.4 N JCT SR 432, Cowlitz, WA

Built 1979 Load: 17.5 t ADT: 28,653

OSTRANDER RD

Fair

Over: OSTRANDER CREEK

0.39 E PAC AVE N (MP 3.63, Cowlitz, WA

Built 1962 Load: 18.1 t ADT: 1,600

DELAMETER RD

Fair

Over: DELAMETER CREEK

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

Built 1957 Load: 18.1 t ADT: 1,203

MODROW RD

Fair

Over: KALAMA RIVER

0.01 S KAL RIV RD (1.23), Cowlitz, WA

Built 1958 Load: 18.1 t ADT: 795

DELAMETER RD

Fair

Over: DELAMETER CREEK

1.56 W SR411 (MP 11.33), Cowlitz, WA

Built 1954 Load: 18.1 t ADT: 1,176

I-5

Fair

Over: COWEEMAN RIVER

2.0 N JCT SR 432, Cowlitz, WA

Built 1979 Load: 18.8 t ADT: 28,653

SR 504

Fair

Over: HOFFSTADT CREEK

8.4 E JCT SR 504 SP, Cowlitz, WA

Built 1991 Load: 18.8 t ADT: 648

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.