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)

US 26 (Hwy 047)

Good

Over: Rock Creek

11.1 MI W OF PORTLAND CC, Washington, OR

Built 2017 Load: 56.4 t ADT: 100,225

SW Teton Ave

Good

Over: Hedges Creek

0.35 N SW Tual-Sher Rd., Washington, OR

Built 1997 Load: 57.7 t ADT: 567

SW Johnson Sch Rd

Good

Over: Davis Creek

0055 MI N SIMPSON ROAD, Washington, OR

Built 2016 Load: 58.0 t ADT: 590

COLLINS ROAD

Good

Over: MCKAY CREEK

025 MI NW SHADYBROOK, Washington, OR

Built 1997 Load: 58.1 t ADT: 231

OR 6 (Hwy 037)

Good

Over: Bateman Creek

10.77 MI W HWY 47 JCT, Washington, OR

Built 2006 Load: 60.3 t ADT: 5,349

OREGON ST.

Good

Over: ROCK CREEK

OR ST AND ROCK CR, Washington, OR

Built 2001 Load: 66.7 t ADT: 214

198TH AVE

Good

Over: CELEBRITY CREEK

MP 0.93, Washington, OR

Built 2020 Load: 68.0 t ADT: 11,176

Wilshire St

Good

Over: Tri-Met LRT

Wilshire 0.1m S of 047, Washington, OR

Built 1994 Load: 69.0 t ADT: 88,423

OR 217

Good

Over: Tri-Met LRT

OR 217 at MP 0.92, Washington, OR

Built 1994 Load: 69.0 t ADT: 93,867

SW HORIZON BLVD

Good

Over: CREEK

HORIZON CROSSING, Washington, OR

Built 2004 Load: 69.0 t ADT: 3,275

SW Hocken Ave.

Good

Over: BEAVERTON CREEK

0.46 MI from Farmington, Washington, OR

Built 2016 Load: 69.0 t ADT: 7,083

SW Myslony St.

Good

Over: Hedges Creek

Sw Myslony St. MP 0.46, Washington, OR

Built 2018 Load: 69.0 t ADT: 218

OR 47 (Hwy 102)

Good

Over: West Fork Dairy Creek

0.5 MI N BANKS, Washington, OR

Built 2022 Load: 69.0 t ADT: 3,372

198TH AVE

Good

Over: BUTTERNUT CREEK

003 MI N BUTTERNUT ST, Washington, OR

Built 2020 Load: 69.0 t ADT: 11,176

BARNES RD

Good

Over: JOHNSON CREEK

MP 3.04, Washington, OR

Built 1995 Load: 69.0 t ADT: 20,157

NW Lauren Ave.

Good

Over: Unnamed Channel

MP 0.03, Washington, OR

Built 2021 Load: 69.0 t ADT: 100

SW TONKA ROAD

Good

Over: NYBERG CREEK

001 E BOONES FERRY ROAD, Washington, OR

Built 1985 Load: 69.0 t ADT: 567

BASELINE RD

Good

Over: BEAVERTON CREEK

002 MI E 231ST AVE, Washington, OR

Built 2005 Load: 69.6 t ADT: 18,329

BASELINE RD

Good

Over: ROCK CREEK

001 MI E 231ST AVE, Washington, OR

Built 2005 Load: 81.6 t ADT: 16,198

US 26 (HWY 047)

Poor

Over: West Fork Dairy Creek

8.1 MI W HWY 37 JCT, Washington, OR

Built 1940 Load: 16.8 t ADT: 11,148

TURK ROAD

Poor

Over: WEST FORK DAIRY CREEK

001 MI N SELL ROAD, Washington, OR

Built 1961 Load: 17.2 t ADT: 208

SW 205TH AVE

Poor

Over: BEAVERTON CREEK

004 MI N BASELINE RD, Washington, OR

Built 1960 Load: 18.8 t ADT: 14,741

UEBEL ROAD

Poor

Over: E FORK DAIRY CREEK

0005 MI W OF PUMPKIN RIDG, Washington, OR

Built 1973 Load: 21.1 t ADT: 1,202

SOUTH ROAD

Structurally Deficient

Over: TUALATIN RIVER

01.8 MI W MT RICHMOND RD, Washington, OR

Built 1974 Load: 5.2 t ADT: 72

NORTH DAKOTA ST

Structurally Deficient

Over: FANNO CREEK

0010 W GREENBURG RD, Washington, OR

Built 1962 Load: 16.5 t ADT: 6,925

GREENVILLE ROAD

Structurally Deficient

Over: DAIRY CREEK

014 MI W HWY 47, Washington, OR

Built 1964 Load: 27.2 t ADT: 914

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