US Bridges

US 26 (hwy 047) over W Fk Dairy Creek

Good

Washington County, Oregon · 3.2 MI W HWY 47 JCT · Structure no. 02362A047 05022

Built
1941
84 years old, rebuilt 1986
Condition
Good
inspected September 2024
Type
Tee Beam
Concrete Continuous
Length
90 ft
4 main spans
Daily traffic
8,934
2022 count
Owner
State
State Highway Agency

About this bridge

US 26 (hwy 047) over W Fk Dairy Creek is a concrete continuous tee beam carrying US 26 (hwy 047) over W Fk Dairy Creek in Washington County, Oregon. It was built in 1941 and reconstructed in 1986, so it is 84 years old, older than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 8,934 vehicles a day, roughly 12% of them trucks, projected to reach 11,700 by 2042. The structure is 90 ft (27.4 m) long and 43 ft wide. If it were closed, the detour would be 40.4 mi (65 km).

CarriesUS 26 (hwy 047)
CrossesW Fk Dairy Creek
Location3.2 MI W HWY 47 JCT
RouteU.S. Route 26
StateOregon
Coordinates45.63977, -123.12101
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
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 adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating27.1 US tons
Inventory rating21.1 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length90 ft (27.4 m)
Longest span35 ft (10.7 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,934 (2022)
Projected traffic11,700 by 2042
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed40.4 mi (65 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$461,000
NavigationNo navigation control on waterway

Frequently asked questions

When was US 26 (hwy 047) over W Fk Dairy Creek built?

It was built in 1941, making it 84 years old in 2025. It was reconstructed in 1986.

What condition is US 26 (hwy 047) over W Fk Dairy Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2024.

How much traffic does US 26 (hwy 047) over W Fk Dairy Creek carry?

About 8,934 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is US 26 (hwy 047) over W Fk Dairy Creek?

The structure is 90 ft (27.4 m) long with a longest span of 35 ft (10.7 m) and a deck 43 ft wide.

Who owns US 26 (hwy 047) over W Fk Dairy Creek?

It is owned by the State Highway Agency.