Washington County, OR

326 public highway bridges

Washington County Bridge Snapshot

Washington County, Oregon contains 326 public highway bridges in the FHWA National Bridge Inventory. Roughly 34% are rated “Good,” 47.5% “Fair,” 2.1% “Poor,” and 2.1% 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 OR 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.

326

Total Bridges

34%

Good

2.1%

Poor

2.1%

Structurally Deficient

Condition Distribution

Good

34% (111)

Fair

47.5% (155)

Poor

2.1% (7)

SD

2.1% (7)

All Bridges (326)

Sort:

HWY 144AW

Over: HWY 144

2.8 MI NW TIGARD CC, Washington, OR

Built 1978 ADT: 97,468

HWY 144AY

Over: HWY 144

2.8 MI NW TIGARD CC, Washington, OR

Built 1978 ADT: 97,468

SW MURRAY BLVD SB

Over: BNRR & TERMAN ROAD

005 MI N HWY 8, Washington, OR

Built 1966 ADT: 1,000

OLD TV HWY #47

Over: CARPENTER CREEK

007 MI S FOREST GROVE, Washington, OR

Built 1953 Load: 11.0 t ADT: 1,230

REIN ROAD

Over: CEDAR CREEK

010 MI SOUTH HWY 99, Washington, OR

Built 1978 Load: 12.0 t ADT: 214

US 26 (HWY 047)

Over: Nehalem River

15.6 MI W OF HWY 37 JCT, Washington, OR

Built 1940 Load: 13.0 t ADT: 6,936

Fern Flat Rd.

Over: Roundy Creek

3.18 Mile N Snooseville C, Washington, OR

Built 2010 Load: 13.3 t ADT: 33

170TH AVE

Over: BEAVERTON CREEK

0055 MI N HWY-8, Washington, OR

Built 1969 Load: 13.6 t ADT: 18,596

BOHMANN PARKWAY

Over: FANNO CREEK

002 MI EAST OF 92ND AVE, Washington, OR

Built 1957 Load: 13.9 t ADT: 282

NICOL RD

Over: FANNO CREEK

003 MI S SCHOLLS FERRY RD, Washington, OR

Built 1962 Load: 14.3 t ADT: 3,115

SW 229th AVE

Over: BUTTERNUT CREEK

008 MI N ROSEDALE ROAD, Washington, OR

Built 1978 Load: 14.3 t ADT: 3,850

Hwy 029

Over: Dairy Creek

2.9 MI E FOREST GROVE, Washington, OR

Built 1923 Load: 14.6 t ADT: 28,205

PADGETT ROAD

Over: OVERFLOW MCKAY CREEK

0085 W CONNELL ST, Washington, OR

Built 1963 Load: 14.6 t ADT: 765

LOMBARD EXTENSION

Over: BEAVERTON CREEK

001 NORTH OF CANYON ROAD, Washington, OR

Built 1988 Load: 14.6 t ADT: 2,833

I-5 (HWY 001) CON

Over: BEAVER DAM CREEK

0.4 MI S OF TUALATIN R., Washington, OR

Built 1991 Load: 14.9 t ADT: 9,677

185TH AVE

Over: BUTTERNUT CREEK

001 MI W MADELINE STREET, Washington, OR

Built 1974 Load: 15.6 t ADT: 21,545

FERN FLAT ROAD

Over: EAST FORK DAIRY CREEK

013 MI N GREENER ROAD, Washington, OR

Built 1975 Load: 15.6 t ADT: 28

SW 86TH AVE

Over: FANNO CREEK

002 MI S SCHOLLS FERRY RD, Washington, OR

Built 1960 Load: 15.9 t ADT: 282

EVERS ROAD

Over: W.FK.DAIRY CR. O'FLOW

009 MI S REILING ROAD, Washington, OR

Built 1957 Load: 15.9 t ADT: 307

HWY 91 SB

Over: TUALATIN RIVER

0.5 MI S OF KING CITY CC, Washington, OR

Built 1929 Load: 16.2 t ADT: 13,883

OR 6 (Hwy 037)

Over: Gales Creek

13.0 MI W OF HWY 47 JCT, Washington, OR

Built 1956 Load: 16.2 t ADT: 4,731

OR 99W(HWY 001W)NB

Over: ROCK CREEK (ONION FLAT)

014 MI N SHERWOOD, Washington, OR

Built 1955 Load: 16.5 t ADT: 14,438

US 26 (HWY 047) WB

Over: PNWR & VADIS

17.0 MI W PORTLAND SWCL, Washington, OR

Built 1946 Load: 16.5 t ADT: 11,519

Hwy 29

Over: PNWR & Scoggin Creek

1.5 MI N GASTON PO, Washington, OR

Built 1967 Load: 16.5 t ADT: 10,615

HWY 91

Over: PNWR

AT TIGARD CC, Washington, OR

Built 1940 Load: 16.8 t ADT: 34,462

SW 92ND AVE

Over: FANNO CREEK

003 MI S SCHOLLS FERRY RD, Washington, OR

Built 1970 Load: 17.2 t ADT: 16,592

CORNELIUS PASS RD

Over: ROCK CREEK

007 MI N GERMANTOWN ROAD, Washington, OR

Built 1950 Load: 17.5 t ADT: 9,915

COCHRAN RD

Over: NEHALEM RIVER

029 MI W TIMBER ROAD JCT, Washington, OR

Built 1979 Load: 17.8 t ADT: 138

HWY 91

Over: FANNO CREEK

AT TIGARD CC, Washington, OR

Built 1940 Load: 18.1 t ADT: 34,462

TIGARD STREET

Over: FANNO CREEK

0005 WEST OF TIEDEMAN, Washington, OR

Built 1958 Load: 18.1 t ADT: 5,667

OR 99W(HWY 91)SB

Over: ROCK CREEK (ONION FLAT)

14 MI. N. OF SHERWOOD, Washington, OR

Built 1931 Load: 19.1 t ADT: 14,438

I-5 (HWY 001)

Over: P&W RR

1.1 MI N OF TUALATIN R., Washington, OR

Built 1975 Load: 19.1 t ADT: 135,007

OR 47 (Hwy 102)

Over: West Fork Dairy Creek

033 MI N FOREST GROVE, Washington, OR

Built 1937 Load: 19.1 t ADT: 6,860

US 26 (Hwy 047)

Over: W FK Dairy Creek

3.2 MI W HWY 47 JCT, Washington, OR

Built 1941 Load: 19.1 t ADT: 10,553

MOUNTAINDALE ROAD

Over: E FK DAIRY CREEK

010 MI N HWY 26, Washington, OR

Built 1992 Load: 19.1 t ADT: 2,066

NW DAIRY CREEK RD

Over: E FORK DAIRY CREEK

001 MI E FERN FLAT RD, Washington, OR

Built 1957 Load: 19.1 t ADT: 305

OLD TV HWY #47

Over: GASTON SLOUGH

010 W HWY #47, Washington, OR

Built 1934 Load: 19.1 t ADT: 568

I-5 (HWY 001)

Over: TUALATIN RIVER

AT TUALATIN RIVER, Washington, OR

Built 1975 Load: 19.8 t ADT: 139,488

OR 6 (Hwy 037)

Over: P&W & PTB

1.9 MI W OF HWY 47 JCT, Washington, OR

Built 1954 Load: 20.4 t ADT: 8,243

HOBBS RD

Over: COUNCIL CREEK

004 EAST SUSBAUER RD, Washington, OR

Built 1955 Load: 20.4 t ADT: 336

OLD TV HWY #47

Over: TUALATIN RIVER OVERFLOW

0025 MI W TUALATIN RIVER, Washington, OR

Built 1934 Load: 20.4 t ADT: 576

JARREL ROAD

Over: JACKSON CREEK

005 MI E MASON HILL RD, Washington, OR

Built 1976 Load: 20.7 t ADT: 106

US 26 (HWY 047) EB

Over: Mckay Creek

16.6 MI W of Portland CC, Washington, OR

Built 1968 Load: 21.1 t ADT: 18,378

MINTER BRIDGE ROAD

Over: DAVIS CREEK

002 MI N BURKHALTER, Washington, OR

Built 1959 Load: 21.1 t ADT: 382

REILING RD

Over: SMALL STREAM

009 MI E HWY 47, Washington, OR

Built 1960 Load: 21.1 t ADT: 77

ROY ROAD

Over: E FK DAIRY CR OFLOW

023 MI E HWY 47, Washington, OR

Built 1960 Load: 21.1 t ADT: 1,275

FISHER ROAD

Over: WEST FORK DAIRY CREEK

007 MI S SUNSET HWY, Washington, OR

Built 1977 Load: 21.1 t ADT: 224

OR 6 (Hwy 037)

Over: Gales Creek

14.0 MI W HWY 47 JCT, Washington, OR

Built 1956 Load: 21.4 t ADT: 5,608

SW 185TH AVE

Over: BEAVERTON CREEK

0061 MI S BASELINE RD, Washington, OR

Built 1987 Load: 21.4 t ADT: 28,780

MILLIKAN WAY

Over: BEAVERTON CREEK

002 N TUALATIN VALLEY HWY, Washington, OR

Built 1984 Load: 21.4 t ADT: 7,083

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 6, 2026