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)

US 20 (HWY 31) EB

Unknown

Over: Willamette River

IN ALBANY, Benton, OR

Built 1925 ADT: 15,600

US 20 (HWY 33)

Unknown

Over: Harris Road & WPRR

05.0 MI W OF PHILOMATH, Benton, OR

Built 1927 ADT: 6,600

OR 99W (Hwy 91) SB

Unknown

Over: Marys River

IN CORVALLIS, Benton, OR

Built 1949 ADT: 10

OR 99W (HWY 91)

Unknown

Over: WPRR

007 MI S CORVALLIS, Benton, OR

Built 1954 ADT: 10

US 20 (Hwy 33) EB

Unknown

Over: Hwy 91 SB

AT JCT OF HWY 1W, Benton, OR

Built 1960 ADT: 8,638

OR 34 (Hwy 210) WB

Unknown

Over: Willamette River

ON LINN BENTON CO LN, Benton, OR

Built 1964 ADT: 12,300

US 20 (HWY 31) WB

Unknown

Over: Willamette River

IN ALBANY, Benton, OR

Built 1971 ADT: 5,316

OR 34 (HWY 33)

Unknown

Over: 3rd & 4th Streets

IN CORVALLIS, Benton, OR

Built 1992 ADT: 8,638

OR 34 (Hwy 33) Con

Unknown

Over: SW 3rd Street

SOUTH CORVALLIS, Benton, OR

Built 1991 ADT: 8,638

HWY 210 EB

Fair

Over: Willamette River

001 E HWY 31 & 210 JCT, Benton, OR

Built 2023 ADT: 9,913

IRISH BEND RD

Fair

Over: WILLAMETTE RIVER O'FLOW

0.95 MI E OF OLD RIVER RD, Benton, OR

Built 1963 Load: 8.4 t ADT: 78

TAMPICO ROAD

Fair

Over: BERRY CREEK

0028 MI S OF POLK CO, Benton, OR

Built 1959 Load: 10.7 t ADT: 102

BUNDY RD

Fair

Over: STEAMBOAT CHANNEL

0098 MI S OF EUREKA RD, Benton, OR

Built 1962 Load: 10.7 t ADT: 208

SMITH LOOP

Fair

Over: SLOUGH

0071 MI E OF HWY 99-W, Benton, OR

Built 1963 Load: 10.7 t ADT: 224

SAXTON RD

Fair

Over: BEAVER CREEK

0017 MI E OF BEAVER CR RD, Benton, OR

Built 1963 Load: 11.0 t ADT: 23

PREACHER CR RD

Fair

Over: LOBSTER CREEK

0024 MI S OF CR 58150, Benton, OR

Built 1957 Load: 11.0 t ADT: 112

MC FARLAND RD

Fair

Over: MUDDY CREEK

0049 MI W OF HWY 99-W, Benton, OR

Built 1963 Load: 11.0 t ADT: 107

NE ELLIOTT CIRCLE

Fair

Over: SMALL CREEK

0009 MI N OF GRANGER RD, Benton, OR

Built 1956 Load: 11.0 t ADT: 65

OR 99W (HWY 91)

Fair

Over: Long Tom River

IN MONROE, Benton, OR

Built 1954 Load: 11.7 t ADT: 4,840

HARRIS ROAD

Fair

Over: MARYS RIVER

0251 MI W OF WREN, Benton, OR

Built 1929 Load: 12.3 t ADT: 84

BEAVER CREEK RD

Fair

Over: BEAVER CREEK

0204 MI S OF DECKER RD, Benton, OR

Built 1962 Load: 13.0 t ADT: 269

SW WESTERN BLVD

Fair

Over: OAK CR

W OF SW 26TH ST, Benton, OR

Built 1925 Load: 14.9 t ADT: 9,000

DAWSON RD

Fair

Over: OLIVER CREEK

DAWSON, Benton, OR

Built 1958 Load: 14.9 t ADT: 603

E INGRAM ISLAND RD

Fair

Over: INGRAM SLOUGH

0094 MI E OF OLD RIVER RD, Benton, OR

Built 1963 Load: 14.9 t ADT: 469

PRICE CREEK RD

Fair

Over: PRICE CREEK

0055 MI W OF 06541, Benton, OR

Built 2009 Load: 14.9 t ADT: 91

NW 9TH STREET

Fair

Over: SEQUOIA CREEK

00.1 MI N OF NW CIRCLE BL, Benton, OR

Built 1940 Load: 15.1 t ADT: 19,662

DECKER RD

Fair

Over: GREASEY CREEK

0.48 MILES E OF HWY 34, Benton, OR

Built 1961 Load: 15.2 t ADT: 321

Harris Rd.

Fair

Over: Marys River

Harris Rd, Benton, OR

Built 1939 Load: 15.2 t ADT: 75

OR 34 (Hwy 27)

Fair

Over: N. Fork Alsea River

032 MI E ALSEA, Benton, OR

Built 1927 Load: 15.6 t ADT: 1,317

US 20 (Hwy 33)

Fair

Over: WPRR

003 MI W OF HWY 1W JCT, Benton, OR

Built 1960 Load: 15.6 t ADT: 14,763

E INGRAM ISLAND PL

Fair

Over: WILLAMETTE R. OVERFLOW

0002 MI E OF CR 45141 N., Benton, OR

Built 1965 Load: 16.2 t ADT: 53

WOODS CR RD

Fair

Over: WOODS CREEK

0.01 MILES S OF HWY 20, Benton, OR

Built 1978 Load: 16.5 t ADT: 563

HWY 31

Fair

Over: Bowers Slough

062 MI E CORVALLIS, Benton, OR

Built 1964 Load: 16.8 t ADT: 14,891

Hwy 201

Fair

Over: South Fork Alsea River

011 MI SW ALSEA, Benton, OR

Built 1934 Load: 16.8 t ADT: 475

OR 34 (Hwy 27)

Fair

Over: Marys River

002 MI W HWY 33 JCT, Benton, OR

Built 1949 Load: 17.2 t ADT: 3,166

SW 15TH ST

Fair

Over: MARY'S RIVER

S OF HWY 20-34, Benton, OR

Built 1953 Load: 17.2 t ADT: 3,800

OR 99W (Hwy 91) NB

Fair

Over: Marys River

IN CORVALLIS, Benton, OR

Built 1933 Load: 17.5 t ADT: 10,568

Hwy 201

Fair

Over: N. Fork Alsea River

010 MI S HWY 27 JCT, Benton, OR

Built 1937 Load: 17.8 t ADT: 611

BRUCE RD

Fair

Over: MUDDY CREEK

0092 MI W OF HWY 99-W, Benton, OR

Built 1972 Load: 18.8 t ADT: 112

HONEY GROVE RD

Fair

Over: NO. FK. ALSEA RIVER

0018 MI E OF ALSEA HWY, Benton, OR

Built 1963 Load: 19.0 t ADT: 129

TUM TUM RD

Fair

Over: TUM TUM RIVER

004 S OF BLODGETT RD, Benton, OR

Built 1955 Load: 19.1 t ADT: 193

MARYS RIVER ROAD

Fair

Over: WEST FORK MARY'S RIVER

0054 MI N OF CR 07560, Benton, OR

Built 1963 Load: 19.1 t ADT: 123

SW 53RD ST

Fair

Over: MARYS RIVER

014 S OF CR 25463, Benton, OR

Built 1965 Load: 19.2 t ADT: 321

LOBSTER VALLEY RD

Fair

Over: LITTLE LOBSTER CREEK

0534 MI NW OF HWY 201, Benton, OR

Built 1957 Load: 19.4 t ADT: 180

LLEWELLYN RD

Fair

Over: MUDDY CREEK OVERFLOW

0239 MI W OF HWY 99-W, Benton, OR

Built 1959 Load: 19.4 t ADT: 437

NW CIRCLE BLVD.

Fair

Over: DIXON CREEK

W OF NW 23RD, Benton, OR

Built 1996 Load: 19.5 t ADT: 8,322

NW 5TH ST.

Fair

Over: DIXON CR

S OF BUCHANAN, Benton, OR

Built 1972 Load: 19.5 t ADT: 7,178

SMITH LOOP

Fair

Over: SLOUGH

0100 MI E OF HWY 99-W, Benton, OR

Built 1956 Load: 19.8 t ADT: 182

HOSKINS RD

Fair

Over: WEST FORK MARY'S RIVER

002 MI E OF 07055, Benton, OR

Built 2011 Load: 20.1 t ADT: 102

WALNUT BLVD

Fair

Over: OAK CREEK

00.83 MI W OF CORVALLIS, Benton, OR

Built 1968 Load: 20.2 t ADT: 10,715

Related

Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial