US Bridges

US 26 (hwy 047) EB over East Fork Dairy Creek

Fair

Washington County, Oregon · 20.0 MI W of Portland Cc · Structure no. 02366B047 05455

Built
1971
54 years old
Condition
Fair
inspected September 2024
Type
Slab
Prestressed Concrete
Length
115 ft
3 main spans
Daily traffic
11,858
2022 count
Owner
State
State Highway Agency

About this bridge

US 26 (hwy 047) EB over East Fork Dairy Creek is a prestressed concrete slab carrying US 26 (hwy 047) EB over East Fork Dairy Creek in Washington County, Oregon. It was built in 1971, so it is 54 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 11,858 vehicles a day, roughly 2% of them trucks, projected to reach 16,850 by 2042. The structure is 115 ft (35.2 m) long and 44 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesUS 26 (hwy 047) EB
CrossesEast Fork Dairy Creek
Location20.0 MI W of Portland Cc
RouteU.S. Route 26
CountyWashington County
StateOregon
Coordinates45.60822, -123.04437
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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
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 geometry7: Better than present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.2 US tons
Inventory rating41.1 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length115 ft (35.2 m)
Longest span39 ft (11.8 m)
Deck width44 ft (13.4 m)
Roadway width42 ft (12.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,858 (2022)
Projected traffic16,850 by 2042
Trucks2%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 26 (hwy 047) EB over East Fork Dairy Creek built?

It was built in 1971, making it 54 years old in 2025.

What condition is US 26 (hwy 047) EB over East Fork Dairy 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 September 2024.

How much traffic does US 26 (hwy 047) EB over East Fork Dairy Creek carry?

About 11,858 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is US 26 (hwy 047) EB over East Fork Dairy Creek?

The structure is 115 ft (35.2 m) long with a longest span of 39 ft (11.8 m) and a deck 44 ft wide.

Who owns US 26 (hwy 047) EB over East Fork Dairy Creek?

It is owned by the State Highway Agency.