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)

SOUTH TOUTLE RD

Fair

Over: OUTLET CREEK

0.21 SE SR 504 (MP 10.54), Cowlitz, WA

Built 1950 Load: 89.8 t ADT: 1,388

NO DATA ENTERED

Good

Over: EAST FORK FOSSIL CREEK

NO DATA ENTERED, Cowlitz, WA

Built 1999 ADT: 20

PLEASANT HILL RD

Good

Over: SALMON CREEK

1.5 Miles N of HQ road, Cowlitz, WA

Built 2021 ADT: 525

TOWER ROAD

Good

Over: ROCK CREEK

4.5 MI E OF SR 504 MP 2.0, Cowlitz, WA

Built 2022 ADT: 325

SLIDE CREEK RD

Good

Over: ABERNATHY CREEK

0.05 W ABERNATHY RD (1.13, Cowlitz, WA

Built 1952 Load: 14.5 t ADT: 98

KELSO DR

Good

Over: COWEEMAN R

0.6 S. OF ALLEN ST., Cowlitz, WA

Built 1947 Load: 15.6 t ADT: 1,500

MEEKER DR

Good

Over: KALAMA RIVER

0.46 S KAL RIV RD (0.08), Cowlitz, WA

Built 1952 Load: 16.5 t ADT: 975

KALAMA RIVER RD

Good

Over: WILD HORSE CREEK

16.11 E OF I-5 EXIT 32, Cowlitz, WA

Built 2001 Load: 18.8 t ADT: 160

SR 4

Good

Over: COAL CR SL

9.3 E WAHKIAKUM CO, Cowlitz, WA

Built 1964 Load: 19.4 t ADT: 5,438

SR 504

Good

Over: E FORK ELK CREEK

17.9 E JCT SR 504 SP, Cowlitz, WA

Built 1992 Load: 20.7 t ADT: 586

SR 411

Good

Over: ARKANSAS CREEK

11.3 N JCT SR 432, Cowlitz, WA

Built 1981 Load: 21.1 t ADT: 4,206

FIBRE WAY

Good

Over: Port of Longview RR

0.36 S INDUSTRIAL (SR 432, Cowlitz, WA

Built 2002 Load: 21.1 t ADT: 4,250

I-5

Good

Over: ELM ST

8.8 N JCT SR 503, Cowlitz, WA

Built 1968 Load: 22.7 t ADT: 33,882

GOBLE CR LOOP RD S

Good

Over: GOBLE CREEK SOUTH FORK

1.48 N ROSE VLY (MP 5.14), Cowlitz, WA

Built 1949 Load: 22.7 t ADT: 410

WIEST RD

Good

Over: ABERNATHY CREEK

0.01 N ABERNATHY RD (3.2), Cowlitz, WA

Built 1993 Load: 23.3 t ADT: 15

SR 504

Good

Over: CREEK

6.4 E JCT SR 504 SP, Cowlitz, WA

Built 1991 Load: 23.6 t ADT: 648

I-5

Good

Over: TODD RD

6.6 N JCT SR 503, Cowlitz, WA

Built 1971 Load: 24.3 t ADT: 34,640

SR 503

Good

Over: SPEELYAI CREEK

2.9 N CLARK CO, Cowlitz, WA

Built 1952 Load: 24.9 t ADT: 855

I-5

Good

Over: TODD RD

6.6 N JCT SR 503, Cowlitz, WA

Built 1971 Load: 24.9 t ADT: 34,640

I-5

Good

Over: OWL CREEK

14.7 N JCT SR 503, Cowlitz, WA

Built 1972 Load: 24.9 t ADT: 36,468

I-5

Good

Over: OWL CREEK

14.7 N JCT SR 503, Cowlitz, WA

Built 1972 Load: 25.3 t ADT: 36,468

CAMERON CREEK RD

Good

Over: CAMERON CREEK

1.28 N OF SR 4 (MP 48.13), Cowlitz, WA

Built 1997 Load: 25.3 t ADT: 3

KALAMA RIVER RD

Good

Over: GOBAR CREEK

16.67 E OF I-5 EXIT 32, Cowlitz, WA

Built 1975 Load: 25.4 t ADT: 146

SR 504

Good

Over: N FK TOUTLE RIVER

0.1 E JCT SR 504 SP, Cowlitz, WA

Built 1989 Load: 29.9 t ADT: 710

GRADE STREET

Good

Over: COWEEMAN RIVER

0.3 W. OF I-5, Cowlitz, WA

Built 1990 Load: 30.8 t ADT: 2,675

SR 504

Good

Over: ELK CREEK

17.1 E JCT SR 504 SP, Cowlitz, WA

Built 1991 Load: 32.7 t ADT: 586

SR 504

Good

Over: S. COLDWATER CREEK

24.6 E JCT SR 504 SP, Cowlitz, WA

Built 1994 Load: 32.7 t ADT: 540

SR 503 SPUR

Good

Over: SPEELYAI CREEK

1.2 N JCT SR 503, Cowlitz, WA

Built 1953 Load: 32.7 t ADT: 1,477

LEXINGTON BR.DRIV

Good

Over: COWLITZ R. AND BNSF RR

W OF I-5 EXIT 42, Cowlitz, WA

Built 2007 Load: 32.7 t ADT: 12,000

COYOTE LANE

Good

Over: BAXTER CREEK

0.16W OF PH10 (MP 4.15), Cowlitz, WA

Built 2020 Load: 32.7 t ADT: 65

ROSE VALLEY ROAD

Good

Over: MULHOLLAND CREEK

11.87 E OLD 99S (MP1.05), Cowlitz, WA

Built 2008 Load: 33.6 t ADT: 38

CARLON LOOP RD

Good

Over: COAL CREEK

0.06 N COAL CRK RD (2.47), Cowlitz, WA

Built 1976 Load: 35.0 t ADT: 257

Pacific Avenue N.

Good

Over: BNSF railroad

1.15 SW I-5 Exit 42, Cowlitz, WA

Built 2023 Load: 35.3 t ADT: 1,300

WASHINGTON WAY

Good

Over: LAKE SACAJAWEA

BETWEEN NICHOLS & KESSLER, Cowlitz, WA

Built 2015 Load: 35.6 t ADT: 9,950

MAPLE HILL RD S

Good

Over: OWL CREEK

0.04 S ROSE VALLEY (1.28), Cowlitz, WA

Built 1954 Load: 37.2 t ADT: 100

N HENDRICKSON DR

Good

Over: KALAMA RIVER

0.08 S W KALAMA RIVER RD, Cowlitz, WA

Built 2001 Load: 37.3 t ADT: 600

SR 4

Good

Over: GERMANY CREEK

4.6 E WAHKIAKUM CO, Cowlitz, WA

Built 1980 Load: 38.1 t ADT: 4,665

KALAMA RIVER ROAD

Good

Over: SUMMERS CREEK

14.16 E OF I-5 EXIT 32, Cowlitz, WA

Built 2010 Load: 38.6 t ADT: 57

SR 506

Good

Over: CAMPBELL CREEK

0.9 E JCT SECOND ST, Cowlitz, WA

Built 1960 Load: 39.9 t ADT: 528

LOUISIANA ST

Good

Over: LAKE SACAJAWEA

LOUISIANA ST. & LAKE SAC., Cowlitz, WA

Built 1967 Load: 40.2 t ADT: 8,100

SR 503

Good

Over: ROSS CREEK

19.9 N JCT SR 503 SPUR, Cowlitz, WA

Built 1989 Load: 40.8 t ADT: 5,522

SR 504

Good

Over: PULLEN CREEK

3.2 E JCT SR 504 SP, Cowlitz, WA

Built 1988 Load: 40.8 t ADT: 648

NEVADA DR

Good

Over: WESTOVER CREEK

0.17 W SR 411 (MP 2.97), Cowlitz, WA

Built 2000 Load: 43.1 t ADT: 4,100

MIEKLER RD

Good

Over: HILL CREEK

0.08 W IMBODEN RD (0.16), Cowlitz, WA

Built 2006 Load: 43.4 t ADT: 53

SR 504

Good

Over: TOUTLE RIVER

11.0 E JCT I-5, Cowlitz, WA

Built 1982 Load: 44.4 t ADT: 1,014

SR 504

Good

Over: COW CREEK

7.2 E JCT SR 504 SP, Cowlitz, WA

Built 1991 Load: 45.4 t ADT: 648

SR 504

Good

Over: MARATTA CREEK

20.6 E JCT SR 504 SP, Cowlitz, WA

Built 1992 Load: 48.1 t ADT: 586

ABERNATHY CREEK RD

Good

Over: ABERNATHY CREEK

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

Built 2005 Load: 48.9 t ADT: 371

INGLEWOOD DR

Good

Over: WESTOVER CREEK

0.03 W ALPHA DR (MP 0.34), Cowlitz, WA

Built 1997 Load: 49.0 t ADT: 1,000

SPRUCE CREEK RD

Good

Over: MILL CREEK

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

Built 2004 Load: 52.8 t ADT: 350

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