US Bridges

US101 (hwy 9) over Yachats River

Fair

Lincoln County, Oregon · In Yachats · Structure no. 01173D009 16473

Built
1977
48 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
223 ft
1 main span
Daily traffic
4,512
2022 count
Owner
State
State Highway Agency

About this bridge

US101 (hwy 9) over Yachats River is a prestressed concrete stringer/multi-beam or girder carrying US101 (hwy 9) over Yachats River in Lincoln County, Oregon. It was built in 1977, so it is 48 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 4,512 vehicles a day, roughly 8% of them trucks, projected to reach 4,600 by 2042. The structure is 223 ft (68.1 m) long and 52 ft wide. If it were closed, the detour would be 81.4 mi (131 km).

Location

Open in Google Maps
CarriesUS101 (hwy 9)
CrossesYachats River
LocationIn Yachats
RouteU.S. Route 101
CountyLincoln County
StateOregon
Coordinates44.30763, -124.10004
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32.5 US tons
Inventory rating25 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20
Structure length223 ft (68.1 m)
Longest span127 ft (38.8 m)
Deck width52 ft (15.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,512 (2022)
Projected traffic4,600 by 2042
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed81.4 mi (131 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 proposedNone recorded
Estimated improvement cost—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was US101 (hwy 9) over Yachats River built?

It was built in 1977, making it 48 years old in 2025.

What condition is US101 (hwy 9) over Yachats River 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 July 2023.

How much traffic does US101 (hwy 9) over Yachats River carry?

About 4,512 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is US101 (hwy 9) over Yachats River?

The structure is 223 ft (68.1 m) long with a longest span of 127 ft (38.8 m) and a deck 52 ft wide.

Who owns US101 (hwy 9) over Yachats River?

It is owned by the State Highway Agency.