US Bridges

I-90 over Garcia Interchange

Fair

King County, Washington · 6.5 E JCT SR 202 · Structure no. 0009498C0000000

Built
1976
49 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
115 ft
1 main span
Daily traffic
18,876
2023 count
Owner
State
State Highway Agency

About this bridge

I-90 over Garcia Interchange is a prestressed concrete stringer/multi-beam or girder carrying I-90 over Garcia Interchange in King County, Washington. It was built in 1976, so it is 49 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 18,876 vehicles a day, roughly 18% of them trucks, projected to reach 25,733 by 2039. The structure is 115 ft (35.1 m) long and 55 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-90
CrossesGarcia Interchange
Location6.5 E JCT SR 202
RouteInterstate 90
CountyKing County
StateWashington
Coordinates47.4305, -121.63561
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating24.7 US tons
Inventory rating19 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length115 ft (35.1 m)
Longest span114 ft (34.6 m)
Deck width55 ft (16.8 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,876 (2023)
Projected traffic25,733 by 2039
Trucks18%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$3 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-90 over Garcia Interchange built?

It was built in 1976, making it 49 years old in 2025.

What condition is I-90 over Garcia Interchange 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 October 2023.

How much traffic does I-90 over Garcia Interchange carry?

About 18,876 vehicles per day (2023 count), of which roughly 18% are trucks.

How long is I-90 over Garcia Interchange?

The structure is 115 ft (35.1 m) long with a longest span of 114 ft (34.6 m) and a deck 55 ft wide.

Who owns I-90 over Garcia Interchange?

It is owned by the State Highway Agency.