Washington County, OR

326 public highway bridges

Washington County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Washington County, Oregon contains 326 public highway bridges. Roughly 34% are rated “Good,” 47.5% “Fair,” and 2.1% “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.

326
Total Bridges
34%
Good
47.5%
Fair
2.1%
Poor Condition

Condition Distribution

Good
34% (111)
Fair
47.5% (155)
Poor
2.1% (7)

All Bridges (326)

SW MURRAY BLVD

Fair

Over: SUMMER CREEK

.25 MI S OF SCHOLLS FERY, Washington, OR

Built 2007 Load: 34.7 t ADT: 3,373

US 26 (HWY 047) EB

Fair

Over: PNWR & VADIS

17.0 MI W PORTLAND SWCL, Washington, OR

Built 1971 Load: 35.0 t ADT: 11,519

CORNELIUS PASS RD

Fair

Over: ROCK CREEK

003 MI N R/R UNDERPASS, Washington, OR

Built 2012 Load: 36.3 t ADT: 25,168

CEDAR CANYON ROAD

Fair

Over: WEST FORK DAIRY CREEK

0072 W HWY 47, Washington, OR

Built 1971 Load: 36.3 t ADT: 1,895

197TH AVE

Fair

Over: BEAVERTON CREEK

001 MI S BASELINE RD, Washington, OR

Built 1971 Load: 36.3 t ADT: 7,559

US 26 (Hwy 047)

Fair

Over: Light Rail Transit

.3 M W OF HWY 144, Washington, OR

Built 1996 Load: 37.2 t ADT: 115,947

BASELINE RD

Fair

Over: BEAVERTON CREEK

0065 MI W 185TH AVE, Washington, OR

Built 2002 Load: 37.2 t ADT: 21,956

RODERICK ROAD

Fair

Over: GALES CREEK

001 MI W GALES CREEK ROAD, Washington, OR

Built 1972 Load: 37.2 t ADT: 184

US 26 (Hwy 047) EB

Fair

Over: East Fork Dairy Creek

20.0 MI W OF PORTLAND CC, Washington, OR

Built 1971 Load: 37.3 t ADT: 11,519

HORNECKER ROAD

Fair

Over: MCKAY CREEK

005 E PADGETT ROAD, Washington, OR

Built 1978 Load: 38.1 t ADT: 2,432

SW SPRING HILL RD

Fair

Over: TUALATIN RIVER OVERFLOW

002 MI S R/R X-ING, Washington, OR

Built 2017 Load: 38.6 t ADT: 1,098

WEST UNION ROAD

Fair

Over: ROCK CREEK

0041 MI W 185TH AVENUE, Washington, OR

Built 1978 Load: 39.0 t ADT: 7,789

US 26 (Hwy 047) EB

Fair

Over: Bledsoe Creek

20.0 MI W OF PORTLAND CC, Washington, OR

Built 1971 Load: 39.9 t ADT: 11,519

GOLF COURSE ROAD

Fair

Over: TUALATIN RIVER OVERFLOW

010 MI S HWY 8, Washington, OR

Built 1997 Load: 39.9 t ADT: 3,824

VERNONIA RD

Fair

Over: NEHALEM RIVER

002 MI N SUNSET HWY, Washington, OR

Built 2006 Load: 39.9 t ADT: 367

HWY 144AP

Fair

Over: ALLEN BLVD

0.3 MI S OF CABOT ST, Washington, OR

Built 2023 Load: 40.8 t ADT: 19,471

HWY 144AR

Fair

Over: ALLEN BLVD

0.3 MI S OF CABOT ST, Washington, OR

Built 2023 Load: 40.8 t ADT: 19,471

MEACHAM ROAD

Fair

Over: E FORK DAIRY CREEK

002 MI W DAIRY CREEK ROAD, Washington, OR

Built 2011 Load: 41.5 t ADT: 152

NW SHADYBROOK ROAD

Fair

Over: MCKAY CREEK

027 MI NE OF NORTH PLAINS, Washington, OR

Built 1983 Load: 41.7 t ADT: 3,925

SW BUTNER ROAD

Fair

Over: CEDAR MILL CREEK

0107 MI E MURRAY BLVD, Washington, OR

Built 1987 Load: 41.7 t ADT: 5,241

SW SEIFFERT RD

Fair

Over: HEATON CREEK

0.5 MI SOUTH HWY 219, Washington, OR

Built 1972 Load: 42.6 t ADT: 1,147

114TH Ave

Fair

Over: Beaverton Creek

114TH Ave, Washington, OR

Built 2008 Load: 42.8 t ADT: 1,500

RITCHEY ROAD

Fair

Over: GALES CREEK

012 MI E STRINGTOWN RD, Washington, OR

Built 1985 Load: 42.8 t ADT: 749

OR 217 (HWY 144)

Fair

Over: ASHBROOK CREEK

0.8 MI N OF HWY 1W, Washington, OR

Built 1970 Load: 43.1 t ADT: 97,018

NW DAIRY CREEK RD

Fair

Over: E FORK DAIRY CREEK

006 MI N MOUNTAINDALE RD, Washington, OR

Built 1969 Load: 43.1 t ADT: 1,572

OR 47 (Hwy 102)

Fair

Over: Dairy Creek Overflow

1.0 MI N BANKS, Washington, OR

Built 2006 Load: 44.1 t ADT: 3,391

SW 135th Avenue

Fair

Over: Summer Creek

0.2 mi S of Scholls Fy Rd, Washington, OR

Built 1996 Load: 45.0 t ADT: 1,272

NE Airport Rd

Fair

Over: Dawson Cr

009 MI EAST OF 264TH AVE, Washington, OR

Built 2006 Load: 45.4 t ADT: 54

DENNEY RD ACCESS N

Fair

Over: FANNO CREEK

001 N OF DENNEY RD, Washington, OR

Built 1977 Load: 45.4 t ADT: 16

DENNEY RD ACCESS S

Fair

Over: FANNO CREEK

001 S OF DENNEY RD, Washington, OR

Built 1977 Load: 45.4 t ADT: 2,125

VERNONIA RD

Fair

Over: ROBINSON CREEK

1.4 NO. HWY 26/CO. 9 JCT, Washington, OR

Built 1960 Load: 46.1 t ADT: 378

HARRINGTON ROAD

Fair

Over: E FK DAIRY CREEK

008 MI E ROY ROAD, Washington, OR

Built 1985 Load: 47.2 t ADT: 809

COCHRAN RD

Fair

Over: NEHALEM RIVER

016 MI W TIMBER RD, Washington, OR

Built 1980 Load: 47.2 t ADT: 194

HARRINGTON ROAD

Fair

Over: BLEDSOE CREEK

010 MILE EAST OF ROY, Washington, OR

Built 1985 Load: 48.1 t ADT: 809

US 26 (HWY 047)

Fair

Over: West Fork Dairy Creek

7.1 MI W HWY 37 JCT, Washington, OR

Built 2013 Load: 49.2 t ADT: 11,433

SW MURRAY BLVD

Fair

Over: CEDAR MILL CREEK

1 MI S/O HWY #26, Washington, OR

Built 1987 Load: 49.9 t ADT: 28,683

US 26 (HWY 047)

Fair

Over: Ghost Creek

17.3 MI W OF Portland CC, Washington, OR

Built 2012 Load: 50.5 t ADT: 36,756

BROOKWOOD AVE

Fair

Over: TRI MET LIGHT RAIL TRACK

2.2 MI N TV HWY., Washington, OR

Built 2001 Load: 51.7 t ADT: 11,788

S W BONITA ROAD

Fair

Over: FANNO CREEK

005 MI WEST INTERSTATE 5, Washington, OR

Built 1971 Load: 52.2 t ADT: 12,041

SCHOLLS FERRY RD

Fair

Over: FANNO CREEK

020 MI SE BEAVERTON CC, Washington, OR

Built 2012 Load: 52.8 t ADT: 18,966

I-5 (HWY 001) SB

Fair

Over: BEAVER DAM CREEK

0.5 MI S OF TUALATIN R., Washington, OR

Built 1975 Load: 53.1 t ADT: 69,744

HWY 141

Fair

Over: TUALATIN RIVER

4.0 MI N OF HWY 1, Washington, OR

Built 1967 Load: 53.5 t ADT: 20,550

OR 6 (Hwy 037)

Fair

Over: South Fork Gales Creek

120 MI W OF HWY 47 JCT, Washington, OR

Built 1956 Load: 54.4 t ADT: 5,608

TIMBER ROAD

Fair

Over: BEAVER CREEK

NORTH OF GLENWOOD, Washington, OR

Built 2006 Load: 55.3 t ADT: 4,371

NORTHRUP ROAD

Fair

Over: MCKAY CREEK

006 MI W DIXIE MOUNTAIN, Washington, OR

Built 2000 Load: 56.2 t ADT: 231

RIVER RD

Fair

Over: ROCK CREEK

00.1 EAST ROOD BR ROAD, Washington, OR

Built 2009 Load: 57.3 t ADT: 10,661

TIMBER ROAD

Fair

Over: BEAVER CREEK

NORTH OF GLENWOOD, Washington, OR

Built 2001 Load: 59.9 t ADT: 4,243

209TH AVE

Fair

Over: BUTTERNUT CREEK

0.6 mi W of Br.671214, Washington, OR

Built 2009 Load: 63.2 t ADT: 13,751

ROY ROGERS RD.

Fair

Over: CHICKEN CREEK

005 MI NW HWY 99, Washington, OR

Built 2000 Load: 64.4 t ADT: 15,717

HWY 140

Fair

Over: CAMPBELLS CREEK

AT HWY 142 JCT, Washington, OR

Built 2007 Load: 64.5 t ADT: 4,161
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.