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)

BRUCE RD

Fair

Over: OVERFLOW

0079 MI W OF HWY 99-W, Benton, OR

Built 1996 Load: 40.8 t ADT: 129

OR 99W (HWY 91)

Fair

Over: Miller Creek

016 MI N BENTON LANE CO L, Benton, OR

Built 2008 Load: 41.5 t ADT: 5,283

OR 223 (Hwy 191)

Fair

Over: Price Creek

015 MI S KINGS VALLEY, Benton, OR

Built 1967 Load: 43.4 t ADT: 922

LLEWELLYN RD

Fair

Over: OFLOW CHANNEL

0272 MI W OF HWY 99-W, Benton, OR

Built 2001 Load: 44.5 t ADT: 437

MAXFIELD CR RD

Fair

Over: MAXFIELD CREEK

0047 MI E OF CR 06541, Benton, OR

Built 1968 Load: 45.4 t ADT: 566

NW OAK CREEK DR

Fair

Over: OAK CREEK

0.4 MILES W OF 53RD ST, Benton, OR

Built 1984 Load: 45.7 t ADT: 2,893

NORTON CREEK RD

Fair

Over: NORTON CREEK

0124 MI N OF HWY 20, Benton, OR

Built 2015 Load: 47.0 t ADT: 123

Llewellyn Road

Fair

Over: Muddy Creek

0250 Mi W of Hwy 99W, Benton, OR

Built 2004 Load: 47.6 t ADT: 437

APPLEGATE ST

Fair

Over: NEWTON CREEK

SOUTH OF HWY 033 (US 20), Benton, OR

Built 2001 Load: 49.9 t ADT: 572

NORTH ALBANY ROAD

Fair

Over: THORNTON LAKE

05. N HWY 20, Benton, OR

Built 2015 Load: 50.5 t ADT: 3,750

NW BUCHANAN AVE

Fair

Over: DIXON CREEK

W OF NW 13TH ST, Benton, OR

Built 1981 Load: 51.8 t ADT: 7,698

GREASY CREEK RD

Fair

Over: GREASY CREEK

002 MI E OF HWY 34, Benton, OR

Built 1972 Load: 52.6 t ADT: 139

SW 35TH ST

Fair

Over: OAK CR

00.1 S OF WASHINGTON WAY, Benton, OR

Built 1978 Load: 58.6 t ADT: 5,930

OR 34 (Hwy 027)

Fair

Over: Yew Creek

065 MI NW HWY 201 JCT, Benton, OR

Built 1966 Load: 69.0 t ADT: 1,349

NW 10TH ST

Fair

Over: DIXON CR

.2 MI S OF BUCHANAN AVE, Benton, OR

Built 1984 Load: 69.0 t ADT: 2,393

OR 99W (HWY 1W) NB

Fair

Over: Dixion Creek

020 MI S CORVALLIS, Benton, OR

Built 1942 Load: 69.0 t ADT: 8,325

Trout Creek Rd.

Fair

Over: Trout Creek

0.42 MI S, S. Mt Road, Benton, OR

Built 2014 Load: 69.0 t ADT: 40

DAWSON RD

Good

Over: MUDDY CREEK OVERFLOW

1.2 MI WEST OF HWY 99 W, Benton, OR

Built 1960 Load: 12.3 t ADT: 723

NE Belvue Rd.

Good

Over: Stewart Slough

0.1 mi S/O walnut St., Benton, OR

Built 2013 Load: 15.0 t ADT: 343

14 S 06 W 34.01:

Good

Over: SOUTH FORK ALSEA RIVER

0.9 miles S of Hwy 34 (MP, Benton, OR

Built 1962 Load: 15.2 t ADT: 100

STOW PIT RD

Good

Over: LONG TOM RIVER

0010 MI E OF HWY 99-W, Benton, OR

Built 2000 Load: 16.2 t ADT: 269

TUM TUM RD

Good

Over: MULKEY CREEK

0052 MI S OF CR 16520, Benton, OR

Built 1956 Load: 17.2 t ADT: 75

SE KIGER ISLAND DR

Good

Over: WILLAMETTE RIVER ARM

0.5 MILES E OF HWY 99W, Benton, OR

Built 1963 Load: 17.5 t ADT: 639

OR 34 (Hwy 33)

Good

Over: Willamette River

SOUTH CORVALLIS, Benton, OR

Built 1991 Load: 17.5 t ADT: 14,763

Walnut Boulevard

Good

Over: SEQUOIA CREEK

0.01 MI N OF NW CIRCLE BL, Benton, OR

Built 2010 Load: 17.8 t ADT: 15,000

14 S 06 W 34.01:

Good

Over: SOUTH FORK ALSEA RIVER

0.9 miles S of Hwy 34 (MP, Benton, OR

Built 1966 Load: 19.1 t ADT: 100

Oxford Circle

Good

Over: Stewart Slough

0.01 Inter Lancaster, Benton, OR

Built 2013 Load: 19.4 t ADT: 343

14 S 06 W 34.01:

Good

Over: SOUTH FORK ALSEA RIVER

0.9 miles S of Hwy 34 (MP, Benton, OR

Built 1966 Load: 20.1 t ADT: 100

OR 99W (Hwy 91)

Good

Over: Mary's River

IN CORVALLIS, Benton, OR

Built 1991 Load: 21.4 t ADT: 2,358

13 S 07 W 21.00:

Good

Over: CROOKED CREEK

0.04 miles S of Hwy 34 (M, Benton, OR

Built 1976 Load: 21.7 t ADT: 50

14 S 06 W 34.01:

Good

Over: SOUTH FORK ALSEA RIVER

0.9 miles S of Hwy 34 (MP, Benton, OR

Built 1966 Load: 21.7 t ADT: 150

NE GRANGER AVE

Good

Over: FRAZIER CREEK

0070 E OF PETTIBONE RD, Benton, OR

Built 1990 Load: 21.7 t ADT: 2,250

OR 99W (HWY 91)

Good

Over: Jackson Creek

004 MI N CORVALLIS, Benton, OR

Built 1919 Load: 21.9 t ADT: 13,294

STOW PIT RD

Good

Over: Creek

1.0 MI E OF HWY 99-W, Benton, OR

Built 2016 Load: 22.2 t ADT: 269

BELLFOUNTAIN RD

Good

Over: EVERGREEN CREEK

0.7 MI N OF CR25280, Benton, OR

Built 1976 Load: 23.6 t ADT: 2,571

Hwy 201

Good

Over: S. Fork Alsea Overflow

010 MI S HWY 27 JCT, Benton, OR

Built 1937 Load: 24.0 t ADT: 475

14 S 07 W 18.00:

Good

Over: SOUTH FORK ALSEA RIVER

0.9 miles S of Hwy 34 (MP, Benton, OR

Built 1961 Load: 26.2 t ADT: 50

13 S 06 W 06.00:

Good

Over: WELLS CREEK

0.17 miles SE of Hwy 34 (, Benton, OR

Built 1984 Load: 26.9 t ADT: 50

OLD RIVER RD

Good

Over: LONG TOM RIVER

1.69MI EAST OF HWY99W, Benton, OR

Built 1962 Load: 26.9 t ADT: 312

HARRIS ROAD

Good

Over: MARYS RIVER

REPLACED BRIDGE # 14478., Benton, OR

Built 1998 Load: 27.5 t ADT: 199

MC FARLAND RD

Good

Over: MUDDY CREEK OVERFLOW

0077 MI W OF HWY 99-W, Benton, OR

Built 1975 Load: 27.9 t ADT: 144

14 S 06 W 34.01:

Good

Over: WILLIAMS CREEK

0.9 miles S of Hwy 34 (MP, Benton, OR

Built 2006 Load: 28.5 t ADT: 100

13 S 08 W 19.02:

Good

Over: COVE CREEK

4.8 miles N of Hwy 34 (MP, Benton, OR

Built 1967 Load: 29.8 t ADT: 50

14 S 07 W 24.00:

Good

Over: PEAK CREEK

0.9 miles S of Hwy 34 (MP, Benton, OR

Built 1968 Load: 29.8 t ADT: 50

OR 99W (HWY 91)

Good

Over: Creek

1/2 MI S OF MARY'S RV, Benton, OR

Built 1992 Load: 30.5 t ADT: 19,152

BELLFOUNTAIN RD

Good

Over: N. FORK BEAVER CREEK

0.1MI SOUTH OF CR26240, Benton, OR

Built 1954 Load: 31.4 t ADT: 2,143

WILLIAM FINLEY RD

Good

Over: MUDDY CREEK

0.2 MI ENE OF HDQTRS, Benton, OR

Built 1994 Load: 32.7 t ADT: 30

REFUGE ACCESS ROAD

Good

Over: LAKE CREEK

1.5 MILE SOUTH OF PEORIA, Benton, OR

Built 1970 Load: 32.7 t ADT: 60

NE SEAVY AVE

Good

Over: STEWART SLOUGH

004 MI W OF HWY 20, Benton, OR

Built 2008 Load: 33.7 t ADT: 493

DAWSON RD

Good

Over: MUDDY CREEK

1.5 MI WEST OF HWY 99W, Benton, OR

Built 1960 Load: 34.5 t ADT: 535

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