US Bridges

SE 28th ST over I-90 E-S Ramp

Good

King County, Washington · 4.4 E JCT I-5 · Structure no. 0013666B0000000

Built
1992
33 years old
Condition
Good
inspected November 2021
Type
Slab
Concrete Continuous
Length
121 ft
2 main spans
Daily traffic
9,120
2002 count
Owner
State
State Highway Agency

About this bridge

SE 28th ST over I-90 E-S Ramp is a concrete continuous slab carrying SE 28th ST over I-90 E-S Ramp in King County, Washington. It was built in 1992, so it is 33 years old, younger 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 9,120 vehicles a day, roughly 2% of them trucks, projected to reach 15,942 by 2036. The structure is 121 ft (36.9 m) long and 65 ft wide.

Location

Open in Google Maps
CarriesSE 28th ST
CrossesI-90 E-S Ramp
Location4.4 E JCT I-5
RouteCity Street 0
CountyKing County
StateWashington
Coordinates47.58549, -122.23121
Functional classUrban Collector

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 inspectionNovember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating59 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length121 ft (36.9 m)
Longest span63 ft (19.2 m)
Deck width65 ft (19.8 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,120 (2002)
Projected traffic15,942 by 2036
Trucks2%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2.9 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was SE 28th ST over I-90 E-S Ramp built?

It was built in 1992, making it 33 years old in 2025.

What condition is SE 28th ST over I-90 E-S Ramp 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 November 2021.

How much traffic does SE 28th ST over I-90 E-S Ramp carry?

About 9,120 vehicles per day (2002 count), of which roughly 2% are trucks.

How long is SE 28th ST over I-90 E-S Ramp?

The structure is 121 ft (36.9 m) long with a longest span of 63 ft (19.2 m) and a deck 65 ft wide.

Who owns SE 28th ST over I-90 E-S Ramp?

It is owned by the State Highway Agency.