US Bridges

Oakesdale Ave SW over Springbrook Creek

Fair

King County, Washington · 0.25 MI N of SW 43 ST · Structure no. 085618000000000

Built
1979
46 years old
Condition
Fair
inspected June 2023
Type
Culvert
Steel
Length
39 ft
4 main spans
Daily traffic
9,325
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Oakesdale Ave SW over Springbrook Creek is a steel culvert carrying Oakesdale Ave SW over Springbrook Creek in King County, Washington. It was built in 1979, so it is 46 years old, younger than the Washington average of 49.8 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 9,325 vehicles a day, roughly 21% of them trucks, projected to reach 12,500 by 2043. The structure is 39 ft (11.8 m) long and 140 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesOakesdale Ave SW
CrossesSpringbrook Creek
Location0.25 MI N of SW 43 ST
RouteCity Street 1070
CountyKing County
StateWashington
Coordinates47.44403, -122.23281
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating106.8 US tons
Inventory rating106.8 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans4
Design loadUnknown
Structure length39 ft (11.8 m)
Longest span8 ft (2.3 m)
Deck width140 ft (42.7 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,325 (2023)
Projected traffic12,500 by 2043
Trucks21%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$3.4 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Oakesdale Ave SW over Springbrook Creek built?

It was built in 1979, making it 46 years old in 2025.

What condition is Oakesdale Ave SW over Springbrook 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 June 2023.

How much traffic does Oakesdale Ave SW over Springbrook Creek carry?

About 9,325 vehicles per day (2023 count), of which roughly 21% are trucks.

How long is Oakesdale Ave SW over Springbrook Creek?

The structure is 39 ft (11.8 m) long with a longest span of 8 ft (2.3 m) and a deck 140 ft wide.

Who owns Oakesdale Ave SW over Springbrook Creek?

It is owned by the City or Municipal Highway Agency.