US Bridges

US101 (hwy 9) over Little Nestucca River

Fair

Tillamook County, Oregon · 00.4 MI S HWY 130 JCT · Structure no. 02508A009 09185

Built
1980
45 years old
Condition
Fair
inspected January 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
619 ft
5 main spans
Daily traffic
4,370
2022 count
Owner
State
State Highway Agency

About this bridge

US101 (hwy 9) over Little Nestucca River is a prestressed concrete stringer/multi-beam or girder carrying US101 (hwy 9) over Little Nestucca River in Tillamook County, Oregon. It was built in 1980, so it is 45 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 5 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 4,370 vehicles a day, roughly 16% of them trucks, projected to reach 4,600 by 2042. The structure is 619 ft (188.7 m) long and 43 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

Location

Open in Google Maps
CarriesUS101 (hwy 9)
CrossesLittle Nestucca River
Location00.4 MI S HWY 130 JCT
RouteU.S. Route 101
CountyTillamook County
StateOregon
Coordinates45.16121, -123.93774
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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating27.1 US tons
Inventory rating21.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length619 ft (188.7 m)
Longest span133 ft (40.5 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,370 (2022)
Projected traffic4,600 by 2042
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US101 (hwy 9) over Little Nestucca River built?

It was built in 1980, making it 45 years old in 2025.

What condition is US101 (hwy 9) over Little Nestucca 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 January 2023.

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

About 4,370 vehicles per day (2022 count), of which roughly 16% are trucks.

How long is US101 (hwy 9) over Little Nestucca River?

The structure is 619 ft (188.7 m) long with a longest span of 133 ft (40.5 m) and a deck 43 ft wide.

Who owns US101 (hwy 9) over Little Nestucca River?

It is owned by the State Highway Agency.