US Bridges

Seabeck Highway over Seabeck Creek

Good

Kitsap County, Washington · 400 Ft SW of Larson Lane · Structure no. 089203000000000

Built
2020
5 years old
Condition
Good
inspected June 2024
Type
Slab
Prestressed Concrete
Length
60 ft
1 main span
Daily traffic
3,657
2023 count
Owner
County
County Highway Agency

About this bridge

Seabeck Highway over Seabeck Creek is a prestressed concrete slab carrying Seabeck Highway over Seabeck Creek in Kitsap County, Washington. It was built in 2020, so it is 5 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 3,657 vehicles a day, roughly 16% of them trucks, projected to reach 4,023 by 2041. The structure is 60 ft (18.3 m) long and 47 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

CarriesSeabeck Highway
CrossesSeabeck Creek
Location400 Ft SW of Larson Lane
RouteCounty Highway 11300
Coordinates47.62853, -122.83742
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating96.8 US tons
Inventory rating62.5 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length60 ft (18.3 m)
Longest span53 ft (16.2 m)
Deck width47 ft (14.3 m)
Roadway width45 ft (13.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,657 (2023)
Projected traffic4,023 by 2041
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$798,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Seabeck Highway over Seabeck Creek built?

It was built in 2020, making it 5 years old in 2025.

What condition is Seabeck Highway over Seabeck 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 June 2024.

How much traffic does Seabeck Highway over Seabeck Creek carry?

About 3,657 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is Seabeck Highway over Seabeck Creek?

The structure is 60 ft (18.3 m) long with a longest span of 53 ft (16.2 m) and a deck 47 ft wide.

Who owns Seabeck Highway over Seabeck Creek?

It is owned by the County Highway Agency.