US Bridges

N. Brooks CR RD over Brooks Creek

Good

Snohomish County, Washington · 0.7 NE JCT SR 530 · Structure no. 080907000000000

Built
1984
41 years old
Condition
Good
inspected July 2024
Type
Tee Beam
Prestressed Concrete
Length
57 ft
1 main span
Daily traffic
104
2023 count
Owner
County
County Highway Agency

About this bridge

N. Brooks CR RD over Brooks Creek is a prestressed concrete tee beam carrying N. Brooks CR RD over Brooks Creek in Snohomish County, Washington. It was built in 1984, so it is 41 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 104 vehicles a day, roughly 19% of them trucks, projected to reach 200 by 2046. The structure is 57 ft (17.4 m) long and 28 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesN. Brooks CR RD
CrossesBrooks Creek
Location0.7 NE JCT SR 530
RouteCounty Highway 83550
Coordinates48.28162, -121.90816
Functional classRural Local

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 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 rating53 US tons
Inventory rating32 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length57 ft (17.4 m)
Longest span54 ft (16.4 m)
Deck width28 ft (8.6 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic104 (2023)
Projected traffic200 by 2046
Trucks19%
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

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$2.4 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was N. Brooks CR RD over Brooks Creek built?

It was built in 1984, making it 41 years old in 2025.

What condition is N. Brooks CR RD over Brooks 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 July 2024.

How much traffic does N. Brooks CR RD over Brooks Creek carry?

About 104 vehicles per day (2023 count), of which roughly 19% are trucks.

How long is N. Brooks CR RD over Brooks Creek?

The structure is 57 ft (17.4 m) long with a longest span of 54 ft (16.4 m) and a deck 28 ft wide.

Who owns N. Brooks CR RD over Brooks Creek?

It is owned by the County Highway Agency.