US Bridges

SR 530 over Schoolyard Creek

Good

Snohomish County, Washington · 4.8 E JCT SR 9 · Structure no. 0019143B0000000

Built
2019
6 years old
Condition
Good
inspected October 2021
Type
Culvert
Concrete
Length
21 ft
1 main span
Daily traffic
5,929
2023 count
Owner
State
State Highway Agency

About this bridge

SR 530 over Schoolyard Creek is a concrete culvert carrying SR 530 over Schoolyard Creek in Snohomish County, Washington. It was built in 2019, so it is 6 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 5,929 vehicles a day, roughly 11% of them trucks, projected to reach 8,420 by 2039. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesSR 530
CrossesSchoolyard Creek
Location4.8 E JCT SR 9
RouteState Highway 530
CountySnohomish County
StateWashington
Coordinates48.2412, -122.05801
Functional classRural 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
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionOctober 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.3 US tons
Inventory rating57.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadOther
Structure length21 ft (6.4 m)
Longest span21 ft (6.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,929 (2023)
Projected traffic8,420 by 2039
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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$294,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 530 over Schoolyard Creek built?

It was built in 2019, making it 6 years old in 2025.

What condition is SR 530 over Schoolyard 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 2021.

How much traffic does SR 530 over Schoolyard Creek carry?

About 5,929 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is SR 530 over Schoolyard Creek?

The structure is 21 ft (6.4 m) long with a longest span of 21 ft (6.4 m).

Who owns SR 530 over Schoolyard Creek?

It is owned by the State Highway Agency.