Clatsop County, OR

155 public highway bridges

Clatsop County Bridge Snapshot

Clatsop County, Oregon contains 155 public highway bridges in the FHWA National Bridge Inventory. Roughly 31.6% are rated “Good,” 54.2% “Fair,” 3.2% “Poor,” and 3.2% 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.

155

Total Bridges

31.6%

Good

3.2%

Poor

3.2%

Structurally Deficient

Condition Distribution

Good

31.6% (49)

Fair

54.2% (84)

Poor

3.2% (5)

SD

3.2% (5)

All Bridges (155)

Sort:

US 26 (HWY 47)

Over: Lindsley Creek

059 MI SE CANNON BCH JCT, Clatsop, OR

Built 1955 Load: 23.3 t ADT: 6,806

US101 (HWY 9)

Over: Columbia River

N END OF ASTORIA BR, Clatsop, OR

Built 1966 Load: 23.3 t ADT: 8,551

US101 (Hwy 9)

Over: Columbia River

N END OF ASTORIA BRIDGE, Clatsop, OR

Built 1965 Load: 23.3 t ADT: 8,551

US 30 (HWY 92)

Over: Marys Creek

008 MI E SVENSON JCT, Clatsop, OR

Built 1967 Load: 23.3 t ADT: 7,819

Tweedle Ln.

Over: George Creek

60 MI E OF JEWEL, Clatsop, OR

Built 2009 Load: 23.3 t ADT: 261

US101 (Hwy 9)

Over: Necanicum River

022 MI S SEASIDE S C LMTS, Clatsop, OR

Built 1930 Load: 23.7 t ADT: 10,991

BROWNSMEAD DIKE RD

Over: BLIND SLOUGH

022 MI N HWY 30, Clatsop, OR

Built 1959 Load: 23.7 t ADT: 338

Hwy 102

Over: S. Fork Klaskanine River

100 MI NW JEWELL, Clatsop, OR

Built 1934 Load: 24.3 t ADT: 327

AVENUE U

Over: NECANICUM RIVER

IN CITY OF SEASIDE, Clatsop, OR

Built 1957 Load: 24.3 t ADT: 5,250

LOWER NEHALEM RD

Over: NEHALEM RIVER

020 MI S OF ELSIE-26 JCT, Clatsop, OR

Built 1965 Load: 24.3 t ADT: 205

ALDRICH POINT RD

Over: GNAT CREEK

05 MI FROM HWY 30, Clatsop, OR

Built 1986 Load: 24.6 t ADT: 225

OLD 30 SVENSEN

Over: BEAR CREEK

004 MI S HWY 30, Clatsop, OR

Built 1923 Load: 24.9 t ADT: 490

BRIDGE LANE

Over: NORTH FORK NEHALEM RIVER

MP 0.1, Clatsop, OR

Built 1936 Load: 24.9 t ADT: 60

US 30 (HWY 92)

Over: Big Creek

120 MI E ASTORIA, Clatsop, OR

Built 1951 Load: 26.2 t ADT: 6,767

US101 (Hwy 9)

Over: Austins Point

015 MI N ARCH CAPE TUNNEL, Clatsop, OR

Built 1933 Load: 26.6 t ADT: 4,523

SUNSET BEACH RD

Over: NEACOXIE LAKE

005 MI W HWY 101 JCT, Clatsop, OR

Built 1963 Load: 27.2 t ADT: 1,967

ALTERNATE HWY 101

Over: ECOLA CR. BR.

N.CANNON BEACH,5TH & 101, Clatsop, OR

Built 1964 Load: 27.9 t ADT: 6,466

HILL CREST LOOP RD

Over: BIG CREEK

010 MI S KNAPPA JCT, Clatsop, OR

Built 1957 Load: 27.9 t ADT: 1,012

US101 (Hwy 9)

Over: Neawanna Creek

AT SEASIDE N C LMTS, Clatsop, OR

Built 1930 Load: 28.1 t ADT: 14,759

Wunsch Road

Over: HUMBUG CREEK

180 MI E HWY101 OFF HWY26, Clatsop, OR

Built 1985 Load: 28.2 t ADT: 64

Hwy 102

Over: Hamilton Creek

035 MI NW JEWELL, Clatsop, OR

Built 1963 Load: 28.5 t ADT: 367

THOMPSON FALL DR.

Over: CREEK

.2 Ml S Lewis Clark RD, Clatsop, OR

Built 2005 Load: 28.8 t ADT: 807

Hwy 103

Over: Fishhawk Creek

IN JEWELL, Clatsop, OR

Built 1989 Load: 30.8 t ADT: 594

LOWER NEHALEM RD

Over: SPRUCE RUN CREEK

AT SPRUCE RUN COUNTY PARK, Clatsop, OR

Built 1987 Load: 31.1 t ADT: 28

AVENUE S

Over: NEAWANNA CREEK

005 MI E OF SEASIDE, Clatsop, OR

Built 1975 Load: 31.8 t ADT: 1,510

SVENSEN ISLAND RD

Over: SVENSEN SLOUGH

003 MI N OF HWY 30 JCT, Clatsop, OR

Built 1960 Load: 31.8 t ADT: 83

WALLUSKI LP ROAD

Over: WALLOOSKEE RIVER

015 MI NW OF OLNEY, Clatsop, OR

Built 1988 Load: 32.4 t ADT: 450

HIGHLANDS DRIVE

Over: NEACOXIE CREEK

020 MI N GEARHART W HY101, Clatsop, OR

Built 1975 Load: 35.0 t ADT: 569

AVENUE A

Over: NECANICUM RIVER

CITY OF SEASIDE, Clatsop, OR

Built 1963 Load: 35.0 t ADT: 7,315

LEWIS & CLARK SPUR

Over: LEWIS & CLARK RIVER

AT NETAL GRANGE, Clatsop, OR

Built 1958 Load: 35.0 t ADT: 671

HAMLET ROAD

Over: ASVICK CREEK

040 MI SE JCT HWY 53, Clatsop, OR

Built 1989 Load: 35.0 t ADT: 338

OR 202 (Hwy 102)

Over: Nehalem River

2.5 MI W BIRKENFELD, Clatsop, OR

Built 1966 Load: 35.6 t ADT: 405

YOUNGS RIVER LP RD

Over: TUCKER CREEK

035 M S MILES CROSSING, Clatsop, OR

Built 2003 Load: 35.6 t ADT: 617

US101 (HWY 9)

Over: Columbia River

Desdemona Sands, Clatsop, OR

Built 1966 Load: 36.0 t ADT: 8,551

OR 202 (Hwy 102)

Over: Walluski River

03.2 MI SE ASTORIA, Clatsop, OR

Built 1980 Load: 36.9 t ADT: 2,549

US101 (Hwy 9)

Over: Skipanon River

08.73 S ASTORIA, Clatsop, OR

Built 1980 Load: 38.6 t ADT: 12,117

LOGAN RD

Over: LEWIS & CLARK RIVER

020 MI S TUCKER RD JCT, Clatsop, OR

Built 1957 Load: 41.1 t ADT: 263

US 26 (HWY 47)

Over: West Humbug Creek

025 MI SE SUMMIT CST RNGE, Clatsop, OR

Built 2014 Load: 42.4 t ADT: 6,963

OLNEY CUT-OFF RD.

Over: S FORK KLASKANINE RIVER

008 MI SE OF OLNEY, Clatsop, OR

Built 1977 Load: 42.8 t ADT: 338

EAST BROADWAY

Over: NEAWANNA CREEK

0.3 MI E OF US 101, Clatsop, OR

Built 2002 Load: 44.5 t ADT: 5,627

Greasy Spoon Rd

Over: Fishhawk Creek

Greasy Spoon FR MP 14.70, Clatsop, OR

Built 1976 Load: 45.4 t ADT: 20

BROWNSMEAD DIKE RD

Over: SASPAL SLOUGH

022 MI N HWY 30, Clatsop, OR

Built 1959 Load: 45.7 t ADT: 338

Northrup Creek Rd

Over: Cow Creek

0.0, Clatsop, OR

Built 2001 Load: 48.1 t

BARENDSE RD

Over: BLIND SLOUGH

001 MI N ROAD JCT, Clatsop, OR

Built 1972 Load: 49.2 t ADT: 282

Hwy 102

Over: N. Fork Klaskanine River

062 MI SE OLNEY, Clatsop, OR

Built 1934 Load: 50.5 t ADT: 327

HILL ROAD

Over: ASVICK CREEK

110 MI SE OF SEASIDE, Clatsop, OR

Built 1964 Load: 51.8 t ADT: 33

Gnat Creek Road

Over: Gnat Creek

0.2mi from US-30, Clatsop, OR

Built 1960 Load: 55.3 t ADT: 30

LOWER NEHALEM RD

Over: HUMBUG CREEK

010 MI S HWY 26 JCT-ELSIE, Clatsop, OR

Built 1972 Load: 57.2 t ADT: 263

US 26 (HWY 047)

Over: South Fork Rock Creek

24.5 MI W OF HWY 37 JCT, Clatsop, OR

Built 1975 Load: 69.0 t ADT: 6,374

US101 (Hwy 9)

Over: Mill Creek

002 MI N SEASIDE, Clatsop, OR

Built 1957 Load: 69.0 t ADT: 14,759

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 5, 2026