US Bridges

Index-Galena RD over Trib NF Skykomish River

Good

Snohomish County, Washington · 6.8 NE JCT SR 2 · Structure no. 089458000000000

Built
2023
2 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
180 ft
1 main span
Daily traffic
190
2019 count
Owner
County
County Highway Agency

About this bridge

Index-Galena RD over Trib NF Skykomish River is a steel stringer/multi-beam or girder carrying Index-Galena RD over Trib NF Skykomish River in Snohomish County, Washington. It was built in 2023, so it is 2 years old, younger than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 190 vehicles a day, roughly 4% of them trucks, projected to reach 250 by 2044. The structure is 180 ft (54.9 m) long and 31 ft wide. If it were closed, the detour would be 44.7 mi (72 km).

CarriesIndex-Galena RD
CrossesTrib NF Skykomish River
Location6.8 NE JCT SR 2
RouteCounty Highway 54600
Coordinates47.87565, -121.46172
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.2 US tons
Inventory rating36.4 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length180 ft (54.9 m)
Longest span174 ft (53 m)
Deck width31 ft (9.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic190 (2019)
Projected traffic250 by 2044
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed44.7 mi (72 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 relocation of road
Estimated improvement cost$6.9 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Index-Galena RD over Trib NF Skykomish River built?

It was built in 2023, making it 2 years old in 2025.

What condition is Index-Galena RD over Trib NF Skykomish River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2023.

How much traffic does Index-Galena RD over Trib NF Skykomish River carry?

About 190 vehicles per day (2019 count), of which roughly 4% are trucks.

How long is Index-Galena RD over Trib NF Skykomish River?

The structure is 180 ft (54.9 m) long with a longest span of 174 ft (53 m) and a deck 31 ft wide.

Who owns Index-Galena RD over Trib NF Skykomish River?

It is owned by the County Highway Agency.