US Bridges

US 2 over Tunnel Creek

Good

King County, Washington · 19.8 E Snohomish CO · Structure no. 0012825A0000000

Built
1985
40 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
170 ft
2 main spans
Daily traffic
2,795
2023 count
Owner
State
State Highway Agency

About this bridge

US 2 over Tunnel Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying US 2 over Tunnel Creek in King County, Washington. It was built in 1985, so it is 40 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 2,795 vehicles a day, roughly 5% of them trucks, projected to reach 3,659 by 2039. The structure is 170 ft (51.8 m) long and 39 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 2
CrossesTunnel Creek
Location19.8 E Snohomish CO
RouteU.S. Route 2
Coordinates47.71803, -121.12264
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 protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length170 ft (51.8 m)
Longest span105 ft (32 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,795 (2023)
Projected traffic3,659 by 2039
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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$3.1 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 2 over Tunnel Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is US 2 over Tunnel 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 Tunnel Creek carry?

About 2,795 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is US 2 over Tunnel Creek?

The structure is 170 ft (51.8 m) long with a longest span of 105 ft (32 m) and a deck 39 ft wide.

Who owns US 2 over Tunnel Creek?

It is owned by the State Highway Agency.