US Bridges

292nd Ave SE over Patterson Creek

Good

King County, Washington · .03 MI S of SR-202 · Structure no. 088521000000000

Built
2012
13 years old
Condition
Good
inspected September 2024
Type
Slab
Prestressed Concrete
Length
69 ft
1 main span
Daily traffic
7,269
2020 count
Owner
County
County Highway Agency

About this bridge

292nd Ave SE over Patterson Creek is a prestressed concrete slab carrying 292nd Ave SE over Patterson Creek in King County, Washington. It was built in 2012, so it is 13 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 7,269 vehicles a day, roughly 6% of them trucks, projected to reach 10,000 by 2043. The structure is 69 ft (21.1 m) long and 41 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Carries292nd Ave SE
CrossesPatterson Creek
Location.03 MI S of SR-202
RouteCounty Highway 98912
Coordinates47.58775, -121.95339
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 inspectionSeptember 2024
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 rating87.9 US tons
Inventory rating62.5 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length69 ft (21.1 m)
Longest span65 ft (19.8 m)
Deck width41 ft (12.5 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,269 (2020)
Projected traffic10,000 by 2043
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed6.2 mi (10 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$2.9 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 292nd Ave SE over Patterson Creek built?

It was built in 2012, making it 13 years old in 2025.

What condition is 292nd Ave SE over Patterson Creek 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 September 2024.

How much traffic does 292nd Ave SE over Patterson Creek carry?

About 7,269 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is 292nd Ave SE over Patterson Creek?

The structure is 69 ft (21.1 m) long with a longest span of 65 ft (19.8 m) and a deck 41 ft wide.

Who owns 292nd Ave SE over Patterson Creek?

It is owned by the County Highway Agency.