US Bridges

SR 3 over Cranberry Creek

Fair

Mason County, Washington · 8.6 N JCT US 101 · Structure no. 0005604A0000000

Built
1957
68 years old
Condition
Fair
inspected February 2024
Type
Slab
Concrete Continuous
Length
71 ft
3 main spans
Daily traffic
15,815
2023 count
Owner
State
State Highway Agency

About this bridge

SR 3 over Cranberry Creek is a concrete continuous slab carrying SR 3 over Cranberry Creek in Mason 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.

It carries about 15,815 vehicles a day, roughly 6% of them trucks, projected to reach 19,973 by 2039. The structure is 71 ft (21.6 m) long and 32 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

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CarriesSR 3
CrossesCranberry Creek
Location8.6 N JCT US 101
RouteState Highway 3
CountyMason County
StateWashington
Coordinates47.26464, -123.01169
Functional classRural Principal Arterial - Other

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating32.2 US tons
Inventory rating25 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length71 ft (21.6 m)
Longest span27 ft (8.2 m)
Deck width32 ft (9.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,815 (2023)
Projected traffic19,973 by 2039
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 km)
TollOn a free road
National Highway SystemYes

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$1 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 3 over Cranberry Creek built?

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

What condition is SR 3 over Cranberry Creek 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 February 2024.

How much traffic does SR 3 over Cranberry Creek carry?

About 15,815 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is SR 3 over Cranberry Creek?

The structure is 71 ft (21.6 m) long with a longest span of 27 ft (8.2 m) and a deck 32 ft wide.

Who owns SR 3 over Cranberry Creek?

It is owned by the State Highway Agency.