US Bridges

Miami Beach Rd. NW over Seabeck Creek

Good

Kitsap County, Washington · 0.11 W Miami Beach Rd. NW · Structure no. 088563000000000

Built
2013
12 years old
Condition
Good
inspected June 2024
Type
Slab
Prestressed Concrete
Length
57 ft
1 main span
Daily traffic
2,671
2023 count
Owner
County
County Highway Agency

About this bridge

Miami Beach Rd. NW over Seabeck Creek is a prestressed concrete slab carrying Miami Beach Rd. NW over Seabeck Creek in Kitsap County, Washington. It was built in 2013, so it is 12 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 2,671 vehicles a day, roughly 15% of them trucks, projected to reach 2,938 by 2041. The structure is 57 ft (17.4 m) long and 37 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesMiami Beach Rd. NW
CrossesSeabeck Creek
Location0.11 W Miami Beach Rd. NW
RouteCounty Highway 11070
CountyKitsap County
StateWashington
Coordinates47.63488, -122.83641
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.
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 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 rating101.1 US tons
Inventory rating77.8 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length57 ft (17.4 m)
Longest span48 ft (14.6 m)
Deck width37 ft (11.2 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,671 (2023)
Projected traffic2,938 by 2041
Trucks15%
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$758,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Miami Beach Rd. NW over Seabeck Creek built?

It was built in 2013, making it 12 years old in 2025.

What condition is Miami Beach Rd. NW 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 Miami Beach Rd. NW over Seabeck Creek carry?

About 2,671 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is Miami Beach Rd. NW over Seabeck Creek?

The structure is 57 ft (17.4 m) long with a longest span of 48 ft (14.6 m) and a deck 37 ft wide.

Who owns Miami Beach Rd. NW over Seabeck Creek?

It is owned by the County Highway Agency.