US Bridges

Marine View DR over Saltwater State Park

Fair

King County, Washington · 2.6 MI NW of JCT SR99 · Structure no. 000000JE0000000

Built
1934
91 years old, rebuilt 2015
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Concrete Continuous
Length
570 ft
8 main spans
Daily traffic
3,507
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

Marine View DR over Saltwater State Park is a concrete continuous stringer/multi-beam or girder carrying Marine View DR over Saltwater State Park in King County, Washington. It was built in 1934 and reconstructed in 2015, so it is 91 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.

It carries about 3,507 vehicles a day, roughly 1% of them trucks, projected to reach 4,000 by 2036. The structure is 570 ft (173.7 m) long and 31 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesMarine View DR
CrossesSaltwater State Park
Location2.6 MI NW of JCT SR99
RouteCity Street 325
CountyKing County
StateWashington
Coordinates47.37412, -122.3206
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 inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.8 US tons
Inventory rating44 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans8
Design loadUnknown
Structure length570 ft (173.7 m)
Longest span100 ft (30.5 m)
Deck width31 ft (9.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,507 (2019)
Projected traffic4,000 by 2036
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and waterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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$9.2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Marine View DR over Saltwater State Park built?

It was built in 1934, making it 91 years old in 2025. It was reconstructed in 2015.

What condition is Marine View DR over Saltwater State Park 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 March 2023.

How much traffic does Marine View DR over Saltwater State Park carry?

About 3,507 vehicles per day (2019 count), of which roughly 1% are trucks.

How long is Marine View DR over Saltwater State Park?

The structure is 570 ft (173.7 m) long with a longest span of 100 ft (30.5 m) and a deck 31 ft wide.

Who owns Marine View DR over Saltwater State Park?

It is owned by the City or Municipal Highway Agency.