Columbia County, WA

86 public highway bridges

Columbia County Bridge Snapshot

Columbia County, Washington contains 86 public highway bridges in the FHWA National Bridge Inventory. Roughly 45.3% are rated “Good,” 44.2% “Fair,” 10.5% “Poor,” and 10.5% 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.

86
Total Bridges
45.3%
Good
10.5%
Poor
10.5%
Structurally Deficient

Condition Distribution

Good
45.3% (39)
Fair
44.2% (38)
Poor
10.5% (9)
SD
10.5% (9)

All Bridges (86)

Harting Grade

Good

Over: SOUTH TOUCHET RIVER

0.2 Miles W of Jct 13250, Columbia, WA

Built 2000 Load: 34.3 t ADT: 100

ROBINSON FORK ROAD

Good

Over: ROBINSON FORK

0.6 S JCT 13890, Columbia, WA

Built 1995 Load: 34.7 t ADT: 25

Wolf Fork Road

Good

Over: North Touchet River

0.171 Mi SE N touchet, Columbia, WA

Built 2006 Load: 34.7 t ADT: 189

ROAD

Good

Over: TUCANNON RIVER

NO DATA ENTERED, Columbia, WA

Built 1988 Load: 35.4 t ADT: 103

WELLER CANYON ROAD

Good

Over: WHETSTONE CREEK

0.2 N JCT 2010, Columbia, WA

Built 1991 Load: 36.0 t ADT: 50

WOLF FORK RD

Good

Over: WOLF FORK

6.8 S JCT 91150, Columbia, WA

Built 2001 Load: 36.0 t ADT: 20

6TH STREET

Good

Over: PATIT CREEK

DAYTON, Columbia, WA

Built 2001 Load: 36.0 t ADT: 50

SR 261

Good

Over: TUCANNON RIVER

10.3 N JCT US 12, Columbia, WA

Built 1967 Load: 36.3 t ADT: 474

US 12

Good

Over: TOUCHET RIVER

2.0 E WALLA WAL CO, Columbia, WA

Built 1966 Load: 36.3 t ADT: 4,406

WOLF FORK ROAD

Good

Over: WOLF FORK

4.4 S JCT 9115, Columbia, WA

Built 1997 Load: 37.9 t ADT: 50

POWERS ROAD

Good

Over: TUCANNON RIVER

0.1 SW JCT SR 261, Columbia, WA

Built 1973 Load: 38.9 t ADT: 75

ROAD

Good

Over: LITTLE TUCANNON RIVER

JUNC RD 47/4620, Columbia, WA

Built 2010 Load: 39.2 t ADT: 50

SOUTH PATIT ROAD

Good

Over: PATIT CREEK

0.03 S JCT 9132, Columbia, WA

Built 1996 Load: 39.9 t ADT: 75

TURNER ROAD

Good

Over: TUCANNON RIVER

12.57 E JCT SR 12, Columbia, WA

Built 1961 Load: 41.5 t ADT: 205

SMITH HOLLOW RD.

Good

Over: TUCANNON RIVER

0.1 S JCT SR 261, Columbia, WA

Built 2008 Load: 42.8 t ADT: 100

ROAD

Good

Over: TOUCHET RIVER

NO DATA ENTERED, Columbia, WA

Built 2005 Load: 44.5 t ADT: 60

USFS ROAD

Good

Over: NORTH FORK TOUCHET RIVER

TOUCHET CORRAL SNOWPARK, Columbia, WA

Built 2010 Load: 44.7 t ADT: 10

Tucannon Road

Good

Over: Un-named creek

M.P. 14.75 Rd No. 92330, Columbia, WA

Built 2017 Load: 45.7 t ADT: 200

ROAD

Good

Over: TOUCHET RIVER

NO DATA ENTERED, Columbia, WA

Built 2005 Load: 46.3 t ADT: 60

Thorn Hollow Road

Good

Over: Whetstone Creek

0.03 Miles SE JCT 25860, Columbia, WA

Built 2015 Load: 47.6 t ADT: 200

US 12

Good

Over: TOUCHET RIVER

7.5 E WALLA WAL CO, Columbia, WA

Built 1966 Load: 48.1 t ADT: 5,442

FIRST STREET

Good

Over: PATIT CREEK

0.2 N JCT US 12, Columbia, WA

Built 2005 Load: 48.9 t ADT: 100

ARCHER ROAD

Good

Over: PATAHA CREEK

0.046 MI LEFT SR12, Columbia, WA

Built 1998 Load: 54.4 t ADT: 50

Whiskey Creek Road

Good

Over: Whiskey Creek

0.7 MI S of Lower Hogeye, Columbia, WA

Built 2017 Load: 58.3 t ADT: 110

US 12

Good

Over: WHETSTONE CREEK

13.0 E WALLA WAL CO, Columbia, WA

Built 2021 Load: 60.3 t ADT: 1,983

MEAD ROAD

Good

Over: KELLOGG HOLLOW CREEK

0.014 MI E KELLOGG, Columbia, WA

Built 2006 Load: 72.6 t ADT: 35

SR 261

Good

Over: PATAHA CREEK

0.2 N JCT US 12, Columbia, WA

Built 1971 Load: 89.8 t ADT: 535

KING GRADE

Poor

Over: TUCANNON RIVER

00.20 MI S CR 9233, Columbia, WA

Built 1974 Load: 8.2 t ADT: 25

SOUTH PATIT ROAD

Poor

Over: SOUTH PATIT CREEK

0.03 E JCT 1499, Columbia, WA

Built 1962 Load: 10.0 t ADT: 75

ROAD

Poor

Over: TUCANNON RIVER

NO DATA ENTERED, Columbia, WA

Built 1964 Load: 17.3 t ADT: 60

US 12

Poor

Over: WAREHOUSE YARD

8.2 E WALLA WAL CO, Columbia, WA

Built 1933 Load: 26.3 t ADT: 2,430

US 12

Poor

Over: TUCANNON RIVER

21.0 E WALLA WAL CO, Columbia, WA

Built 1967 Load: 38.1 t ADT: 1,874

BAILEYSBURG ROAD

Structurally Deficient

Over: NORTH TOUCHET RIVER

0.2 S JCT 9115, Columbia, WA

Built 1975 Load: 10.0 t ADT: 50

ROSE GULCH ROAD

Structurally Deficient

Over: TOUCHET RIVER

0.2 N JCT SR 12, Columbia, WA

Built 1963 Load: 13.0 t ADT: 150

TUCANNON ROAD

Structurally Deficient

Over: TUCANNON RIVER

2.86 SE JCT SR126, Columbia, WA

Built 1968 Load: 18.1 t ADT: 200

KELLOG HOLLOW RD.

Structurally Deficient

Over: TUCANNON RIVER

0.2 SW JCT SR 261, Columbia, WA

Built 1962 Load: 29.8 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