US Bridges

SR 92 over Little Pilchuck Creek

Good

Snohomish County, Washington · 2.7 E JCT SR 9 · Structure no. 0019186A0000000

Built
2018
7 years old
Condition
Good
inspected October 2024
Type
Arch - Deck
Concrete
Length
66 ft
1 main span
Daily traffic
12,768
2023 count
Owner
State
State Highway Agency

About this bridge

SR 92 over Little Pilchuck Creek is a concrete arch - deck carrying SR 92 over Little Pilchuck Creek in Snohomish County, Washington. It was built in 2018, so it is 7 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 12,768 vehicles a day, roughly 10% of them trucks, projected to reach 18,758 by 2039. The structure is 66 ft (20.1 m) long and 72 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesSR 92
CrossesLittle Pilchuck Creek
Location2.7 E JCT SR 9
RouteState Highway 92
Coordinates48.03362, -122.05328
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
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable 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 rating91.4 US tons
Inventory rating74 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length66 ft (20.1 m)
Longest span66 ft (20.1 m)
Deck width72 ft (21.9 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,768 (2023)
Projected traffic18,758 by 2039
Trucks10%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

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$1.6 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 92 over Little Pilchuck Creek built?

It was built in 2018, making it 7 years old in 2025.

What condition is SR 92 over Little Pilchuck 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 October 2024.

How much traffic does SR 92 over Little Pilchuck Creek carry?

About 12,768 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is SR 92 over Little Pilchuck Creek?

The structure is 66 ft (20.1 m) long with a longest span of 66 ft (20.1 m) and a deck 72 ft wide.

Who owns SR 92 over Little Pilchuck Creek?

It is owned by the State Highway Agency.