US Bridges

US 2 over Alpine Creek

Good

King County, Washington · 13.7 E Snohomish CO · Structure no. 0015050B0000000

Built
1998
27 years old
Condition
Good
inspected August 2023
Type
Slab
Concrete
Length
40 ft
1 main span
Daily traffic
5,692
2023 count
Owner
State
State Highway Agency

About this bridge

US 2 over Alpine Creek is a concrete slab carrying US 2 over Alpine Creek in King County, Washington. It was built in 1998, so it is 27 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 5,692 vehicles a day, roughly 5% of them trucks, projected to reach 7,540 by 2039. The structure is 40 ft (12.2 m) long and 52 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesUS 2
CrossesAlpine Creek
Location13.7 E Snohomish CO
RouteU.S. Route 2
Coordinates47.71672, -121.24331
Functional classRural Principal Arterial - Other

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation7: Better than 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 rating99 US tons
Inventory rating75.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length40 ft (12.2 m)
Longest span38 ft (11.6 m)
Deck width52 ft (15.7 m)
Roadway width49 ft (14.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,692 (2023)
Projected traffic7,540 by 2039
Trucks5%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$950,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 2 over Alpine Creek built?

It was built in 1998, making it 27 years old in 2025.

What condition is US 2 over Alpine Creek 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 August 2023.

How much traffic does US 2 over Alpine Creek carry?

About 5,692 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is US 2 over Alpine Creek?

The structure is 40 ft (12.2 m) long with a longest span of 38 ft (11.6 m) and a deck 52 ft wide.

Who owns US 2 over Alpine Creek?

It is owned by the State Highway Agency.