US Bridges

US101 (hwy 9) over Big Creek

Fair

Lincoln County, Oregon · 04.7 MI N Yachats · Structure no. 01430A009 16015

Built
1929
96 years old, rebuilt 1978
Condition
Fair
inspected July 2023
Type
Tee Beam
Concrete Continuous
Length
120 ft
3 main spans
Daily traffic
6,724
2022 count
Owner
State
State Highway Agency

About this bridge

US101 (hwy 9) over Big Creek is a concrete continuous tee beam carrying US101 (hwy 9) over Big Creek in Lincoln County, Oregon. It was built in 1929 and reconstructed in 1978, so it is 96 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.

It carries about 6,724 vehicles a day, roughly 5% of them trucks, projected to reach 7,000 by 2042. The structure is 120 ft (36.6 m) long and 39 ft wide. If it were closed, the detour would be 81.4 mi (131 km).

Location

Open in Google Maps
CarriesUS101 (hwy 9)
CrossesBig Creek
Location04.7 MI N Yachats
RouteU.S. Route 101
CountyLincoln County
StateOregon
Coordinates44.37058, -124.08986
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 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 evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating26.8 US tons
Inventory rating20.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length120 ft (36.6 m)
Longest span50 ft (15.2 m)
Deck width39 ft (11.9 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,724 (2022)
Projected traffic7,000 by 2042
Trucks5%
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was US101 (hwy 9) over Big Creek built?

It was built in 1929, making it 96 years old in 2025. It was reconstructed in 1978.

What condition is US101 (hwy 9) over Big Creek 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 Big Creek carry?

About 6,724 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is US101 (hwy 9) over Big Creek?

The structure is 120 ft (36.6 m) long with a longest span of 50 ft (15.2 m) and a deck 39 ft wide.

Who owns US101 (hwy 9) over Big Creek?

It is owned by the State Highway Agency.