US Bridges

E Interlaken Blvd over 26th Ave E

FairPosted for load

King County, Washington · 26th Ave E & Interlaken · Structure no. 085379000000000

Built
1912
113 years old
Condition
Fair
inspected July 2023
Type
Arch - Deck
Concrete
Length
88 ft
1 main span
Daily traffic
200
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

E Interlaken Blvd over 26th Ave E is a concrete arch - deck carrying E Interlaken Blvd over 26th Ave E in King County, Washington. It was built in 1912, so it is 113 years old, older 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. Its operating status is: posted for load restriction.

It carries about 200 vehicles a day, roughly 1% of them trucks, projected to reach 250 by 2039. The structure is 88 ft (26.8 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesE Interlaken Blvd
Crosses26th Ave E
Location26th Ave E & Interlaken
RouteCity Street 1140
CountyKing County
StateWashington
Coordinates47.63333, -122.3
Functional classUrban Local

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating23 US tons
Inventory rating13 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length88 ft (26.8 m)
Longest span41 ft (12.5 m)
Deck width33 ft (10 m)
Roadway width10 ft (3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2019)
Projected traffic250 by 2039
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was E Interlaken Blvd over 26th Ave E built?

It was built in 1912, making it 113 years old in 2025.

What condition is E Interlaken Blvd over 26th Ave E 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 July 2023.

How much traffic does E Interlaken Blvd over 26th Ave E carry?

About 200 vehicles per day (2019 count), of which roughly 1% are trucks.

How long is E Interlaken Blvd over 26th Ave E?

The structure is 88 ft (26.8 m) long with a longest span of 41 ft (12.5 m) and a deck 33 ft wide.

Who owns E Interlaken Blvd over 26th Ave E?

It is owned by the City or Municipal Highway Agency.