US Bridges

SR 104 East Half over Hood Canal

Poor

Kitsap County, Washington · 0.1 E Jefferson CO · Structure no. 0016525A0000000

Built
2009
16 years old
Condition
Poor
inspected May 2024
Type
Other
Prestressed Concrete
Length
2,670 ft
1 main span
Daily traffic
18,159
2023 count
Owner
State
State Highway Agency

About this bridge

SR 104 East Half over Hood Canal is a prestressed concrete other carrying SR 104 East Half over Hood Canal in Kitsap County, Washington. It was built in 2009, so it is 16 years old, younger than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 18,159 vehicles a day, roughly 7% of them trucks, projected to reach 24,158 by 2039. The structure is 2,670 ft (813.8 m) long and 43 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesSR 104 East Half
CrossesHood Canal
Location0.1 E Jefferson CO
RouteState Highway 104
Coordinates47.85904, -122.62292
Functional classRural Principal Arterial - Other

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
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 rating45 US tons
Inventory rating36 US tons

Structure

Structure typeOther
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length2,670 ft (813.8 m)
Longest span2,670 ft (813.8 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,159 (2023)
Projected traffic24,158 by 2039
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkSTRAHNET connector

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$53.3 million (2022 estimate)
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was SR 104 East Half over Hood Canal built?

It was built in 2009, making it 16 years old in 2025.

What condition is SR 104 East Half over Hood Canal in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2024.

How much traffic does SR 104 East Half over Hood Canal carry?

About 18,159 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is SR 104 East Half over Hood Canal?

The structure is 2,670 ft (813.8 m) long with a longest span of 2,670 ft (813.8 m) and a deck 43 ft wide.

Who owns SR 104 East Half over Hood Canal?

It is owned by the State Highway Agency.