US Bridges

154th Place SE over Cedar River

Good

King County, Washington · 0.1 Mile N of SR-169 · Structure no. 087293000000000

Built
2005
20 years old
Condition
Good
inspected March 2023
Type
Girder and Floorbeam System
Steel
Length
406 ft
2 main spans
Daily traffic
18,726
2021 count
Owner
County
County Highway Agency

About this bridge

154th Place SE over Cedar River is a steel girder and floorbeam system carrying 154th Place SE over Cedar River in King County, Washington. It was built in 2005, so it is 20 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 18,726 vehicles a day, roughly 5% of them trucks, projected to reach 23,000 by 2040. The structure is 406 ft (123.7 m) long and 49 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
Carries154th Place SE
CrossesCedar River
Location0.1 Mile N of SR-169
RouteCounty Highway 98501
CountyKing County
StateWashington
Coordinates47.46761, -122.13669
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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56 US tons
Inventory rating43 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length406 ft (123.7 m)
Longest span203 ft (61.9 m)
Deck width49 ft (14.9 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,726 (2021)
Projected traffic23,000 by 2040
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$15 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 154th Place SE over Cedar River built?

It was built in 2005, making it 20 years old in 2025.

What condition is 154th Place SE over Cedar River 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 March 2023.

How much traffic does 154th Place SE over Cedar River carry?

About 18,726 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is 154th Place SE over Cedar River?

The structure is 406 ft (123.7 m) long with a longest span of 203 ft (61.9 m) and a deck 49 ft wide.

Who owns 154th Place SE over Cedar River?

It is owned by the County Highway Agency.