US Bridges

SR 160 over Puget Sound @ Southworth

FairPosted for load

Kitsap County, Washington · 11.2 E JCT SR 16 · Structure no. 0005715A0000000

Built
1957
68 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
421 ft
25 main spans
Daily traffic
3,681
2010 count
Owner
State
State Highway Agency

About this bridge

SR 160 over Puget Sound @ Southworth is a wood or timber stringer/multi-beam or girder carrying SR 160 over Puget Sound @ Southworth in Kitsap County, Washington. It was built in 1957, so it is 68 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 3,681 vehicles a day, roughly 1% of them trucks, projected to reach 5,978 by 2036. The structure is 421 ft (128.3 m) long and 54 ft wide. If it were closed, the detour would be 44.7 mi (72 km).

Location

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CarriesSR 160
CrossesPuget Sound @ Southworth
Location11.2 E JCT SR 16
RouteState Highway 160
CountyKitsap County
StateWashington
Coordinates47.51333, -122.495
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating26 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans25 (+3 approach)
Design loadHS 15
Structure length421 ft (128.3 m)
Longest span19 ft (5.8 m)
Deck width54 ft (16.5 m)
Roadway width41 ft (12.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,681 (2010)
Projected traffic5,978 by 2036
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed44.7 mi (72 km)
TollToll bridge
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$9.4 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 160 over Puget Sound @ Southworth built?

It was built in 1957, making it 68 years old in 2025.

What condition is SR 160 over Puget Sound @ Southworth in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2024.

How much traffic does SR 160 over Puget Sound @ Southworth carry?

About 3,681 vehicles per day (2010 count), of which roughly 1% are trucks.

How long is SR 160 over Puget Sound @ Southworth?

The structure is 421 ft (128.3 m) long with a longest span of 19 ft (5.8 m) and a deck 54 ft wide.

Who owns SR 160 over Puget Sound @ Southworth?

It is owned by the State Highway Agency.