US Bridges

US 26 (hwy 047) WB over Mckay Creek

Fair

Washington County, Oregon · 16.6 MI W of Portland Cc · Structure no. 21322 047 05784

Built
2010
15 years old
Condition
Fair
inspected September 2024
Type
Slab
Prestressed Concrete
Length
186 ft
3 main spans
Daily traffic
19,528
2022 count
Owner
State
State Highway Agency

About this bridge

US 26 (hwy 047) WB over Mckay Creek is a prestressed concrete slab carrying US 26 (hwy 047) WB over Mckay Creek in Washington County, Oregon. It was built in 2010, so it is 15 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 19,528 vehicles a day, roughly 2% of them trucks, projected to reach 30,400 by 2042. The structure is 186 ft (56.7 m) long and 45 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesUS 26 (hwy 047) WB
CrossesMckay Creek
Location16.6 MI W of Portland Cc
RouteU.S. Route 26
CountyWashington County
StateOregon
Coordinates45.58599, -122.98439
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.9 US tons
Inventory rating53.2 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHL 93
Structure length186 ft (56.7 m)
Longest span62 ft (18.9 m)
Deck width45 ft (13.7 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) WB over Mckay Creek built?

It was built in 2010, making it 15 years old in 2025.

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

The structure is 186 ft (56.7 m) long with a longest span of 62 ft (18.9 m) and a deck 45 ft wide.

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

It is owned by the State Highway Agency.