US Bridges

SR 520 over SR 202 & Bike Path

Fair

King County, Washington · 5.8 E JCT I-405 · Structure no. 0014444B0000000

Built
1995
30 years old, rebuilt 2010
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
463 ft
5 main spans
Daily traffic
19,104
2023 count
Owner
State
State Highway Agency

About this bridge

SR 520 over SR 202 & Bike Path is a prestressed concrete continuous stringer/multi-beam or girder carrying SR 520 over SR 202 & Bike Path in King County, Washington. It was built in 1995 and reconstructed in 2010, so it is 30 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 19,104 vehicles a day, roughly 3% of them trucks, projected to reach 28,842 by 2039. The structure is 463 ft (141.1 m) long and 105 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesSR 520
CrossesSR 202 & Bike Path
Location5.8 E JCT I-405
RouteState Highway 520
CountyKing County
StateWashington
Coordinates47.66886, -122.10794
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80 US tons
Inventory rating47 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 25 or greater
Structure length463 ft (141.1 m)
Longest span98 ft (29.9 m)
Deck width105 ft (31.9 m)
Roadway width100 ft (30.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,104 (2023)
Projected traffic28,842 by 2039
Trucks3%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$22.4 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 520 over SR 202 & Bike Path built?

It was built in 1995, making it 30 years old in 2025. It was reconstructed in 2010.

What condition is SR 520 over SR 202 & Bike Path 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 January 2024.

How much traffic does SR 520 over SR 202 & Bike Path carry?

About 19,104 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is SR 520 over SR 202 & Bike Path?

The structure is 463 ft (141.1 m) long with a longest span of 98 ft (29.9 m) and a deck 105 ft wide.

Who owns SR 520 over SR 202 & Bike Path?

It is owned by the State Highway Agency.