US Bridges

US 26 (hwy 047) EB over Mckay Creek

Fair

Washington County, Oregon · 16.6 MI W of Portland Cc · Structure no. 02365A047 05785

Built
1968
57 years old
Condition
Fair
inspected September 2024
Type
Slab
Prestressed Concrete
Length
125 ft
3 main spans
Daily traffic
19,528
2022 count
Owner
State
State Highway Agency

About this bridge

US 26 (hwy 047) EB over Mckay Creek is a prestressed concrete slab carrying US 26 (hwy 047) EB over Mckay Creek in Washington County, Oregon. It was built in 1968, so it is 57 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 19,528 vehicles a day, roughly 2% of them trucks, projected to reach 30,400 by 2042. The structure is 125 ft (38.2 m) long and 44 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesUS 26 (hwy 047) EB
CrossesMckay Creek
Location16.6 MI W of Portland Cc
RouteU.S. Route 26
CountyWashington County
StateOregon
Coordinates45.5858, -122.9846
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 protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating30.3 US tons
Inventory rating23.3 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length125 ft (38.2 m)
Longest span42 ft (12.8 m)
Deck width44 ft (13.4 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,528 (2022)
Projected traffic30,400 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 Mckay Creek built?

It was built in 1968, making it 57 years old in 2025.

What condition is US 26 (hwy 047) EB over Mckay 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 Mckay Creek carry?

About 19,528 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is US 26 (hwy 047) EB over Mckay Creek?

The structure is 125 ft (38.2 m) long with a longest span of 42 ft (12.8 m) and a deck 44 ft wide.

Who owns US 26 (hwy 047) EB over Mckay Creek?

It is owned by the State Highway Agency.