US Bridges

Yellow Fir Road over Tillamook River

Fair

Tillamook County, Oregon · 7.0 MI So of Tillamook · Structure no. 24372 773 00120

Built
2024
1 years old
Condition
Fair
inspected September 2024
Type
Slab
Prestressed Concrete
Length
52 ft
1 main span
Daily traffic
100
2010 count
Owner
County
County Highway Agency

About this bridge

Yellow Fir Road over Tillamook River is a prestressed concrete slab carrying Yellow Fir Road over Tillamook River in Tillamook County, Oregon. It was built in 2024, so it is 1 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 100 vehicles a day, projected to reach 140 by 2030. The structure is 52 ft (15.8 m) long and 16 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesYellow Fir Road
CrossesTillamook River
Location7.0 MI So of Tillamook
RouteCounty Highway 0B773
CountyTillamook County
StateOregon
Coordinates45.35279, -123.83561
Functional classRural Local

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
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 rating75 US tons
Inventory rating45 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length52 ft (15.8 m)
Longest span52 ft (15.8 m)
Deck width16 ft (4.9 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2010)
Projected traffic140 by 2030
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Yellow Fir Road over Tillamook River built?

It was built in 2024, making it 1 years old in 2025.

What condition is Yellow Fir Road over Tillamook 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 September 2024.

How much traffic does Yellow Fir Road over Tillamook River carry?

About 100 vehicles per day (2010 count).

How long is Yellow Fir Road over Tillamook River?

The structure is 52 ft (15.8 m) long with a longest span of 52 ft (15.8 m) and a deck 16 ft wide.

Who owns Yellow Fir Road over Tillamook River?

It is owned by the County Highway Agency.