US Bridges

Pike ST over I-5

Good

King County, Washington · 1.5 N JCT I-90 · Structure no. 0007409C0000000

Built
1964
61 years old
Condition
Good
inspected April 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
282 ft
2 main spans
Daily traffic
12,100
2018 count
Owner
State
State Highway Agency

About this bridge

Pike ST over I-5 is a concrete continuous box beam or girders - multiple carrying Pike ST over I-5 in King County, Washington. It was built in 1964, so it is 61 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 12,100 vehicles a day, roughly 5% of them trucks, projected to reach 17,000 by 2038. The structure is 282 ft (86 m) long and 75 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesPike ST
CrossesI-5
Location1.5 N JCT I-90
RouteCity Street 0
CountyKing County
StateWashington
Coordinates47.61251, -122.33106
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating84 US tons
Inventory rating48.9 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length282 ft (86 m)
Longest span134 ft (40.8 m)
Deck width75 ft (23 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,100 (2018)
Projected traffic17,000 by 2038
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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$6.7 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Pike ST over I-5 built?

It was built in 1964, making it 61 years old in 2025.

What condition is Pike ST over I-5 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2023.

How much traffic does Pike ST over I-5 carry?

About 12,100 vehicles per day (2018 count), of which roughly 5% are trucks.

How long is Pike ST over I-5?

The structure is 282 ft (86 m) long with a longest span of 134 ft (40.8 m) and a deck 75 ft wide.

Who owns Pike ST over I-5?

It is owned by the State Highway Agency.