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)

Sort:

HWY 180

Over: Marys River

007 MI E SUMMIT, Benton, OR

Built 1957 Load: 20.4 t ADT: 419

Jack London Rd

Over: Stewart Slough

0.1 mi S/O Walnut st., Benton, OR

Built 2013 Load: 20.4 t ADT: 343

HARRIS ROAD

Over: MARYS RIVER

0026 MI W OF WREN, Benton, OR

Built 1965 Load: 20.6 t ADT: 187

OR 34 (Hwy 27)

Over: Mill Creek

012 MI W ALSEA, Benton, OR

Built 1953 Load: 20.7 t ADT: 805

HOSKINS RD

Over: LUCKIAMUTE RIVER

0001 MI W OF 06530, Benton, OR

Built 1964 Load: 20.7 t ADT: 175

LTL LOBSTER CR RD

Over: LITTLE LOBSTER CREEK

0065 MI W OF HIGHWAY 201, Benton, OR

Built 1963 Load: 20.7 t ADT: 101

OR 34 (Hwy 27)

Over: Maltby Creek

042 MI W ALSEA PO, Benton, OR

Built 1956 Load: 21.4 t ADT: 752

HAINES ROAD

Over: BUMMER CREEK

0035 MI W OF HIGHWAY 201, Benton, OR

Built 1961 Load: 21.4 t ADT: 63

US 20 (HWY 33)

Over: Marys River & WPRR

052 MI E LINCOLN-BENTON, Benton, OR

Built 1955 Load: 21.7 t ADT: 5,898

OR 223 (Hwy 191)

Over: Marys River

007 MI N WREN, Benton, OR

Built 1950 Load: 22.0 t ADT: 1,306

SE BRIDGEWAY AVE

Over: MILL RACE

E OF HWY 99W, Benton, OR

Built 1965 Load: 22.7 t ADT: 1,114

HOSKINS RD

Over: LUCKIAMUTE RIVER

0.79MI WEST OF HWY223, Benton, OR

Built 1958 Load: 22.7 t ADT: 360

ROAD

Over: LOBSTER CREEK

NO DATA ENTERED, Benton, OR

Built 1955 Load: 24.5 t ADT: 4

NORTON CREEK RD

Over: NORTON CREEK

0112 MI N OF HWY 20, Benton, OR

Built 1958 Load: 25.3 t ADT: 123

OR 34 (Hwy 27)

Over: Rock Creek

040 MI W HWY 33 JCT, Benton, OR

Built 1926 Load: 25.4 t ADT: 2,201

FERN ROAD

Over: EVERGREEN CREEK

1.2MILES S OF HWY 20 34, Benton, OR

Built 1988 Load: 25.9 t ADT: 1,446

US 20 (Hwy 33)

Over: Oak Creek

005 MI E OF CORVALLIS WCL, Benton, OR

Built 1960 Load: 26.9 t ADT: 20,175

US 20 (HWY 33)

Over: Marys River

017 MI W OF PHILOMATH, Benton, OR

Built 1954 Load: 27.2 t ADT: 8,887

MAXFIELD CR RD

Over: MAXFIELD CREEK

0143 MI E OF HIGHWAY 223, Benton, OR

Built 1964 Load: 27.2 t ADT: 670

SW 30TH ST

Over: Oak Creek

Oregon State University, Benton, OR

Built 1958 Load: 27.2 t ADT: 5,930

SHINGLE CREEK RD

Over: E. FORK MARY'S RIVER

0004 MI N OF 06540, Benton, OR

Built 1963 Load: 27.5 t ADT: 38

OR 223 (Hwy 191)

Over: Luckiamute River

003 MI S KINGS VALLEY RD, Benton, OR

Built 1966 Load: 28.5 t ADT: 615

OR 223 (Hwy 191)

Over: Maxfield Creek

008 MI S KINGS VALLEY, Benton, OR

Built 1967 Load: 28.8 t ADT: 922

KINGS BLVD

Over: DIXON CREEK

0.08 ML SO OF CIRCLE BLVD, Benton, OR

Built 1991 Load: 29.2 t ADT: 15,709

NW OAK CREEK DR

Over: OAK CREEK

0063 MI N OF CR 16050, Benton, OR

Built 1957 Load: 29.8 t ADT: 321

BELLFOUNTAIN RD

Over: MARYS RIVER

1.2 MI SOUTH OF PHILOMATH, Benton, OR

Built 1964 Load: 30.1 t ADT: 1,929

NW CRESENT VAL. DR

Over: JACKSON CREEK

0054 MI W OF HIGHLAND DR, Benton, OR

Built 1962 Load: 30.1 t ADT: 643

NW INDEPENDENCE HW

Over: FRAZIER CREEK

0061 MI N OF HIGHWAY 20, Benton, OR

Built 1976 Load: 30.8 t ADT: 2,840

HUBBARD RD

Over: LONG TOM RIVER

0004 MI E OF HWY 99-W, Benton, OR

Built 2023 Load: 30.8 t ADT: 360

OR 34 (HWY 33)

Over: Newton Creek

008 MI E OF PHILOMATH PO, Benton, OR

Built 2007 Load: 31.4 t ADT: 16,420

BRUCE RD

Over: MUDDY CR. OVERFLOW

0074 MI W OF HWY 99-W, Benton, OR

Built 1996 Load: 31.8 t ADT: 129

ROAD

Over: ROCK CREEK

NO DATA ENTERED, Benton, OR

Built 1976 Load: 32.7 t ADT: 1

SALMONBERRY RD

Over: ALSEA RIVER

0027 MI SE OF HWY 34, Benton, OR

Built 1959 Load: 32.7 t ADT: 75

LUCKIAMUTE R RD

Over: LUCKIAMUTE RIVER

018 MI N OF HOSKINS, Benton, OR

Built 1956 Load: 33.0 t ADT: 214

MAXFIELD CR RD

Over: MAXFIELD CREEK

0111 MI E OF HIGHWAY 223, Benton, OR

Built 1964 Load: 33.6 t ADT: 750

DAWSON RD

Over: REESE CREEK

EAST OF CR46330, Benton, OR

Built 2004 Load: 33.7 t ADT: 416

NW BECA AVE

Over: DIXON CR

AT 16TH STREET, Benton, OR

Built 1984 Load: 34.0 t ADT: 1,769

HOSKINS RD

Over: BOTTGER CREEK

0178 MI E OF CR 07055, Benton, OR

Built 2007 Load: 34.0 t ADT: 114

14 S 08 W 29.01:

Over: LITTLE LOBSTER CREEK

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

Built 1967 Load: 34.3 t ADT: 25

US 20 (HWY 33)

Over: Marys River

060 MI W OF PHILOMATH, Benton, OR

Built 1966 Load: 34.3 t ADT: 5,719

AIRPORT RD

Over: MUDDY CREEK

3.6 MILE WEST OF HWY 99W, Benton, OR

Built 1958 Load: 34.3 t ADT: 493

NW 11TH ST

Over: DIXON CR

.2 MI S OF BUCHANAN AVE, Benton, OR

Built 1981 Load: 35.0 t ADT: 2,393

ROAD

Over: ALSEA RIVER

HWY 34 TO LEISURE WAY, Benton, OR

Built 1964 Load: 35.4 t ADT: 12

SEELEY CR RD

Over: NO. FK. ALSEA RIVER

0027 MI E OF HWY 34, Benton, OR

Built 1970 Load: 35.4 t ADT: 27

NW OAK CREEK DR

Over: OAK CREEK

20 NW OF SW 53RD ST-WALNU, Benton, OR

Built 1984 Load: 35.6 t ADT: 1,393

NW BUCHANAN AVE

Over: DIXON CR

BETWEEN NW 3RD AND 4TH ST, Benton, OR

Built 1972 Load: 35.6 t ADT: 4,785

NW RYALS AVE

Over: BOWERS SLOUGH

2.0 MI E OF ADAIR VILLAGE, Benton, OR

Built 1965 Load: 36.3 t ADT: 917

MAXFIELD CR RD

Over: MAXFIELD CREEK

0041 MI E OF CR 06541, Benton, OR

Built 1968 Load: 37.2 t ADT: 592

SW 35TH ST

Over: DUNAWI CREEK

N OF KNOLLBROOK AVE, Benton, OR

Built 1977 Load: 37.3 t ADT: 5,410

FERN RD

Over: MARYS RIVER

0.7 MILE S OF PHILOMATH, Benton, OR

Built 1961 Load: 39.0 t ADT: 2,060

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