US Bridges

NE 4th ST over City Street and Sbcd

Good

King County, Washington · 2.4 N JCT I-90 · Structure no. 0013293A0000000

Built
1989
36 years old
Condition
Good
inspected July 2023
Type
Tee Beam
Concrete Continuous
Length
243 ft
4 main spans
Daily traffic
24,635
2015 count
Owner
State
State Highway Agency

About this bridge

NE 4th ST over City Street and Sbcd is a concrete continuous tee beam carrying NE 4th ST over City Street and Sbcd in King County, Washington. It was built in 1989, so it is 36 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 24,635 vehicles a day, roughly 9% of them trucks, projected to reach 38,085 by 2037. The structure is 243 ft (74.1 m) long and 105 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesNE 4th ST
CrossesCity Street and Sbcd
Location2.4 N JCT I-90
RouteCity Street 405
Coordinates47.61375, -122.19003
Functional classUrban Other Principal 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 inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating38.9 US tons
Inventory rating30 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length243 ft (74.1 m)
Longest span76 ft (23.2 m)
Deck width105 ft (32 m)
Roadway width87 ft (26.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,635 (2015)
Projected traffic38,085 by 2037
Trucks9%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 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$10.3 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was NE 4th ST over City Street and Sbcd built?

It was built in 1989, making it 36 years old in 2025.

What condition is NE 4th ST over City Street and Sbcd 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 July 2023.

How much traffic does NE 4th ST over City Street and Sbcd carry?

About 24,635 vehicles per day (2015 count), of which roughly 9% are trucks.

How long is NE 4th ST over City Street and Sbcd?

The structure is 243 ft (74.1 m) long with a longest span of 76 ft (23.2 m) and a deck 105 ft wide.

Who owns NE 4th ST over City Street and Sbcd?

It is owned by the State Highway Agency.