US Bridges

I-5 Ramp over Pedestrian Path

Fair

King County, Washington · 3.1 N JCT I-90 · Structure no. 0006303C0000000

Built
1963
62 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
619 ft
7 main spans
Daily traffic
5,002
2012 count
Owner
State
State Highway Agency

About this bridge

I-5 Ramp over Pedestrian Path is a prestressed concrete stringer/multi-beam or girder carrying I-5 Ramp over Pedestrian Path in King County, Washington. It was built in 1963, so it is 62 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.

It carries about 5,002 vehicles a day, roughly 5% of them trucks, projected to reach 8,363 by 2036. The structure is 619 ft (188.7 m) long and 26 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesI-5 Ramp
CrossesPedestrian Path
Location3.1 N JCT I-90
RouteInterstate 5
Coordinates47.63683, -122.32353
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.9 US tons
Inventory rating38 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length619 ft (188.7 m)
Longest span94 ft (28.7 m)
Deck width26 ft (7.8 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,002 (2012)
Projected traffic8,363 by 2036
Trucks5%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesPedestrian / bicycle
Detour if closed3.1 mi (5 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$7.4 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-5 Ramp over Pedestrian Path built?

It was built in 1963, making it 62 years old in 2025.

What condition is I-5 Ramp over Pedestrian 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 July 2023.

How much traffic does I-5 Ramp over Pedestrian Path carry?

About 5,002 vehicles per day (2012 count), of which roughly 5% are trucks.

How long is I-5 Ramp over Pedestrian Path?

The structure is 619 ft (188.7 m) long with a longest span of 94 ft (28.7 m) and a deck 26 ft wide.

Who owns I-5 Ramp over Pedestrian Path?

It is owned by the State Highway Agency.