US Bridges

US101 (hwy 9) over Sunset HWY

Fair

Clatsop County, Oregon · 341 MI N Cannon Beach · Structure no. 16673 009 02523

Built
1987
38 years old
Condition
Fair
inspected October 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
150 ft
1 main span
Daily traffic
11,363
2022 count
Owner
State
State Highway Agency

About this bridge

US101 (hwy 9) over Sunset HWY is a prestressed concrete box beam or girders - multiple carrying US101 (hwy 9) over Sunset HWY in Clatsop County, Oregon. It was built in 1987, so it is 38 years old, younger than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 11,363 vehicles a day, roughly 4% of them trucks, projected to reach 11,500 by 2042. The structure is 150 ft (45.7 m) long and 63 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

Location

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CarriesUS101 (hwy 9)
CrossesSunset HWY
Location341 MI N Cannon Beach
RouteU.S. Route 101
CountyClatsop County
StateOregon
Coordinates45.93805, -123.9211
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.9 US tons
Inventory rating76.1 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length150 ft (45.7 m)
Longest span150 ft (45.7 m)
Deck width63 ft (19.3 m)
Roadway width60 ft (18.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,363 (2022)
Projected traffic11,500 by 2042
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed29.8 mi (48 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$769,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was US101 (hwy 9) over Sunset HWY built?

It was built in 1987, making it 38 years old in 2025.

What condition is US101 (hwy 9) over Sunset HWY in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2023.

How much traffic does US101 (hwy 9) over Sunset HWY carry?

About 11,363 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is US101 (hwy 9) over Sunset HWY?

The structure is 150 ft (45.7 m) long with a longest span of 150 ft (45.7 m) and a deck 63 ft wide.

Who owns US101 (hwy 9) over Sunset HWY?

It is owned by the State Highway Agency.