US Bridges

Index-Galena RD over Trout Creek

Fair

Snohomish County, Washington · 6.1 NE JCT SR 2 · Structure no. 079909000000000

Built
1966
59 years old
Condition
Fair
inspected March 2024
Type
Tee Beam
Prestressed Concrete
Length
120 ft
3 main spans
Daily traffic
128
2020 count
Owner
County
County Highway Agency

About this bridge

Index-Galena RD over Trout Creek is a prestressed concrete tee beam carrying Index-Galena RD over Trout Creek in Snohomish County, Washington. It was built in 1966, so it is 59 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 5 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 128 vehicles a day, roughly 7% of them trucks, projected to reach 400 by 2041. The structure is 120 ft (36.7 m) long and 20 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesIndex-Galena RD
CrossesTrout Creek
Location6.1 NE JCT SR 2
RouteCounty Highway 54600
CountySnohomish County
StateWashington
Coordinates47.86328, -121.48725
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34.9 US tons
Inventory rating20.9 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans3
Design loadUnknown
Structure length120 ft (36.7 m)
Longest span58 ft (17.7 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic128 (2020)
Projected traffic400 by 2041
Trucks7%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$4.7 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Index-Galena RD over Trout Creek built?

It was built in 1966, making it 59 years old in 2025.

What condition is Index-Galena RD over Trout 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 March 2024.

How much traffic does Index-Galena RD over Trout Creek carry?

About 128 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is Index-Galena RD over Trout Creek?

The structure is 120 ft (36.7 m) long with a longest span of 58 ft (17.7 m) and a deck 20 ft wide.

Who owns Index-Galena RD over Trout Creek?

It is owned by the County Highway Agency.