Benton County, OR

190 public highway bridges

Benton County Bridge Snapshot

Benton County, Oregon contains 190 public highway bridges in the FHWA National Bridge Inventory. Roughly 31.6% are rated “Good,” 56.8% “Fair,” 6.8% “Poor,” and 6.8% 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.

190
Total Bridges
31.6%
Good
6.8%
Poor
6.8%
Structurally Deficient

Condition Distribution

Good
31.6% (60)
Fair
56.8% (108)
Poor
6.8% (13)
SD
6.8% (13)

All Bridges (190)

LONG ROAD

Good

Over: WEST FORK MARY'S RIVER

003 MI E OF HOSKINS RD, Benton, OR

Built 2008 Load: 36.3 t ADT: 71

US 20 (HWY 33)

Good

Over: Norton Creek

051 MI E LINCOLN BENTON L, Benton, OR

Built 1975 Load: 36.6 t ADT: 5,898

Hwy 201

Good

Over: Bummer Creek

038 MI S HWY 27 JCT, Benton, OR

Built 1967 Load: 36.9 t ADT: 178

AIRPORT RD

Good

Over: MUDDY CR O'FLOW

02.2 MI W OF HWY 99W, Benton, OR

Built 2003 Load: 37.2 t ADT: 697

GRANGE HALL RD

Good

Over: GREASY CREEK

0025 MI E OF HWY 34, Benton, OR

Built 2000 Load: 37.6 t ADT: 336

GREENBERRY RD

Good

Over: MUDDY CREEK

2.12 MI WEST OF HWY 99W, Benton, OR

Built 1967 Load: 39.0 t ADT: 1,731

BEAVER CREEK RD

Good

Over: BEAVER CREEK

0219 MI S OF DECKER RD, Benton, OR

Built 1978 Load: 39.0 t ADT: 193

CHAPEL DR

Good

Over: NEWTON CREEK

0.9 MI SE OF PHILOMATH, Benton, OR

Built 2003 Load: 39.0 t ADT: 1,560

14 S 08 W 03.01:

Good

Over: Mill Creek

3.4 miles N of OR HWY 34, Benton, OR

Built 2016 Load: 42.1 t ADT: 10

BELLFOUNTAIN RD

Good

Over: HAMMER CREEK

0032 MI S OF ALPINE, Benton, OR

Built 2016 Load: 42.8 t ADT: 261

ALPINE RD

Good

Over: MUDDY CREEK

3.2 MILES WEST OF HWY 99W, Benton, OR

Built 2017 Load: 43.4 t ADT: 1,072

NW 9TH ST

Good

Over: DIXON CR

002 MI S OF BUCHANAN AVE, Benton, OR

Built 1985 Load: 46.3 t ADT: 20,182

SE CRYSTAL LAKE DR

Good

Over: MILL RACE

.2 MILE E OF HWY 99W, Benton, OR

Built 1985 Load: 47.6 t ADT: 3,017

OR 99W (HWY 1W) SB

Good

Over: Dixion Creek

020 MI S CORVALLIS, Benton, OR

Built 1942 Load: 47.6 t ADT: 8,572

OLD RIVER RD

Good

Over: FLAT CREEK

0.4 MI NORTH OF CR55701, Benton, OR

Built 2003 Load: 48.1 t ADT: 439

ROAD

Good

Over: ROCK CREEK

NO DATA ENTERED, Benton, OR

Built 2013 Load: 48.6 t ADT: 20

SW MORRIS AVE

Good

Over: OAK CR

INT MORRIS AVE & 26TH ST, Benton, OR

Built 2016 Load: 52.5 t ADT: 1,030

Washington Way

Good

Over: OAK CR

00.1 S OF WASHINGTON WAY, Benton, OR

Built 2006 Load: 52.6 t ADT: 104

BELLFOUNTAIN RD

Good

Over: OLIVER CREEK

1.6 MI NORTH OF CR45120, Benton, OR

Built 2006 Load: 54.8 t ADT: 535

KNOLLBROOK PL

Good

Over: DUNAWI CREEK

N OF KNOLLBROOK AVE, Benton, OR

Built 2006 Load: 55.4 t ADT: 364

NW ELMWOOD DRIVE

Good

Over: DIXON CREEK

001 MILE W OF NW 23RD ST, Benton, OR

Built 1987 Load: 56.1 t ADT: 563

FAIR OAKS DR

Good

Over: CREEK

0.03 MI W OF WALNUT BLVD, Benton, OR

Built 2002 Load: 56.4 t ADT: 53

OR 99W (Hwy 91)

Good

Over: Mountain View Creek

015 MI N CORVALLIS, Benton, OR

Built 2011 Load: 57.7 t ADT: 11,468

HWY 091

Good

Over: Lake Slough

OR 99W MP 103.68, Benton, OR

Built 2018 Load: 63.5 t ADT: 5,283

14 S 06 W 34.01:

Good

Over: Coleman Creek

0.9 Miles S of HWY 34 (MP, Benton, OR

Built 2012 Load: 69.0 t ADT: 100

SW BROOKLANE DR.

Good

Over: DUNAWI CREEK

0.20 S.OF HWY 20/34, Benton, OR

Built 1987 Load: 69.0 t ADT: 1,795

14 S 07 W 19.00:

Good

Over: Tobe Creek

4 miles S of Hwy 34, Benton, OR

Built 2015 Load: 70.6 t ADT: 1

HWY 210 EB

Poor

Over: Willamette River

001 E HWY 31 & 210 JCT, Benton, OR

Built 1913 Load: 5.5 t ADT: 9,913

FIRCREEK LANE

Poor

Over: GREASY CREEK

1.0 SW HWY 34/20 JCT., Benton, OR

Built 1996 Load: 20.4 t ADT: 115

TAMPICO ROAD

Poor

Over: SOAP CREEK

0066 MI W OF SOAP CR RD, Benton, OR

Built 1956 Load: 26.2 t ADT: 172

ROBISON RD

Poor

Over: SOAP CREEK

0170 MI W OF HWY 99-W, Benton, OR

Built 1977 Load: 27.9 t ADT: 140

ALEXANDER ROAD

Poor

Over: BURGETT CREEK

0003 MI N GIRL SCOUT RD, Benton, OR

Built 2003 Load: 34.0 t ADT: 97

NW GRANT ST

Poor

Over: DIXON CR

E OF NW 17TH ST, Benton, OR

Built 1967 Load: 39.9 t ADT: 4,100

DODGE ISLAND RD

Structurally Deficient

Over: DODGE ISLAND SLOUGH

0010 MI E OF OLD RIVER RD, Benton, OR

Built 1963 Load: 4.9 t ADT: 177

HAYDEN ROAD

Structurally Deficient

Over: ALSEA RIVER

0014 MI S OF HWY 34, Benton, OR

Built 1945 Load: 9.1 t ADT: 102

FOSTER RD

Structurally Deficient

Over: OLIVER CREEK

0048 MI S OF DAWSON RD, Benton, OR

Built 1959 Load: 11.3 t ADT: 125

WILES ROAD

Structurally Deficient

Over: SOAP CREEK

0014 MI N OF 04451, Benton, OR

Built 1960 Load: 11.7 t ADT: 102

WILLIAMS RD

Structurally Deficient

Over: HAMMER CREEK

0010 MI E OF ALPINE RD, Benton, OR

Built 1964 Load: 11.7 t ADT: 75

MC FARLAND RD

Structurally Deficient

Over: MUDDY CREEK

0043 MI N OF ALPINE RD, Benton, OR

Built 1963 Load: 13.0 t ADT: 182

NW GARFIELD AVE

Structurally Deficient

Over: DIXON CR

00.1 MI W OF NW 17TH ST, Benton, OR

Built 1958 Load: 15.6 t ADT: 3,374

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