US Bridges

S 228th Street over BNSF RR

Good

King County, Washington · 0.2 MI W of SR-167 · Structure no. 088651000000000

Built
2009
16 years old
Condition
Good
inspected April 2024
Type
Tee Beam
Prestressed Concrete Continuous
Length
128 ft
1 main span
Daily traffic
2,200
2018 count
Owner
City
City or Municipal Highway Agency

About this bridge

S 228th Street over BNSF RR is a prestressed concrete continuous tee beam carrying S 228th Street over BNSF RR in King County, Washington. It was built in 2009, so it is 16 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 3,100 by 2039. The structure is 128 ft (39 m) long and 70 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesS 228th Street
CrossesBNSF RR
Location0.2 MI W of SR-167
RouteCity Street 615
Coordinates47.39759, -122.23386
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionApril 2024
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 alignment6: Equal to present minimum criteria
Operating rating47.5 US tons
Inventory rating36.8 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHL 93
Structure length128 ft (39 m)
Longest span106 ft (32.3 m)
Deck width70 ft (21.3 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,200 (2018)
Projected traffic3,100 by 2039
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$3 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was S 228th Street over BNSF RR built?

It was built in 2009, making it 16 years old in 2025.

What condition is S 228th Street over BNSF RR 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 2024.

How much traffic does S 228th Street over BNSF RR carry?

About 2,200 vehicles per day (2018 count), of which roughly 5% are trucks.

How long is S 228th Street over BNSF RR?

The structure is 128 ft (39 m) long with a longest span of 106 ft (32.3 m) and a deck 70 ft wide.

Who owns S 228th Street over BNSF RR?

It is owned by the City or Municipal Highway Agency.