US Bridges

US101 (hwy 9) over Depoe Bay

FairPosted for load

Lincoln County, Oregon · Depoe Bay · Structure no. 02459 009 12761

Built
1927
98 years old, rebuilt 1939
Condition
Fair
inspected June 2023
Type
Arch - Deck
Concrete
Length
333 ft
1 main span
Daily traffic
11,116
2022 count
Owner
State
State Highway Agency

About this bridge

US101 (hwy 9) over Depoe Bay is a concrete arch - deck carrying US101 (hwy 9) over Depoe Bay in Lincoln County, Oregon. It was built in 1927 and reconstructed in 1939, so it is 98 years old, older 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. Its operating status is: posted for other load-capacity restriction.

It carries about 11,116 vehicles a day, roughly 4% of them trucks, projected to reach 11,200 by 2042. The structure is 333 ft (101.6 m) long and 62 ft wide. If it were closed, the detour would be 41.6 mi (67 km).

Location

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CarriesUS101 (hwy 9)
CrossesDepoe Bay
LocationDepoe Bay
RouteU.S. Route 101
CountyLincoln County
StateOregon
Coordinates44.80961, -124.06196
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating18.5 US tons
Inventory rating14.3 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1 (+4 approach)
Design loadH 15
Structure length333 ft (101.6 m)
Longest span150 ft (45.7 m)
Deck width62 ft (19 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,116 (2022)
Projected traffic11,200 by 2042
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed41.6 mi (67 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 statusListed on the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$1.7 million
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was US101 (hwy 9) over Depoe Bay built?

It was built in 1927, making it 98 years old in 2025. It was reconstructed in 1939.

What condition is US101 (hwy 9) over Depoe Bay 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 June 2023.

How much traffic does US101 (hwy 9) over Depoe Bay carry?

About 11,116 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is US101 (hwy 9) over Depoe Bay?

The structure is 333 ft (101.6 m) long with a longest span of 150 ft (45.7 m) and a deck 62 ft wide.

Who owns US101 (hwy 9) over Depoe Bay?

It is owned by the State Highway Agency.