US Bridges

S 228th Street over UPRR

Good

King County, Washington · 0.3 MI W of SR-167 · Structure no. 089218000000000

Built
2021
4 years old
Condition
Good
inspected May 2023
Type
Girder and Floorbeam System
Concrete Continuous
Length
221 ft
2 main spans
Daily traffic
2,200
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

S 228th Street over UPRR is a concrete continuous girder and floorbeam system carrying S 228th Street over UPRR in King County, Washington. It was built in 2021, so it is 4 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 2,200 vehicles a day, roughly 5% of them trucks, projected to reach 3,200 by 2043. The structure is 221 ft (67.4 m) long and 70 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesS 228th Street
CrossesUPRR
Location0.3 MI W of SR-167
RouteCity Street 615
Coordinates47.39761, -122.24247
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 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 rating72.1 US tons
Inventory rating54.2 US tons

Structure

MaterialConcrete Continuous
DeckOther
Main spans2 (+2 approach)
Design loadHL 93
Structure length221 ft (67.4 m)
Longest span113 ft (34.4 m)
Deck width70 ft (21.3 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,200 (2023)
Projected traffic3,200 by 2043
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$13.6 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was S 228th Street over UPRR built?

It was built in 2021, making it 4 years old in 2025.

What condition is S 228th Street over UPRR 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 May 2023.

How much traffic does S 228th Street over UPRR carry?

About 2,200 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is S 228th Street over UPRR?

The structure is 221 ft (67.4 m) long with a longest span of 113 ft (34.4 m) and a deck 70 ft wide.

Who owns S 228th Street over UPRR?

It is owned by the City or Municipal Highway Agency.