US Bridges

US 2 over Anthracite Creek

Poor

King County, Washington · 9.8 E Snohomish CO · Structure no. 0002561A0000000

Built
1940
85 years old
Condition
Poor
inspected July 2024
Type
Tee Beam
Concrete
Length
45 ft
1 main span
Daily traffic
5,782
2023 count
Owner
State
State Highway Agency

About this bridge

US 2 over Anthracite Creek is a concrete tee beam carrying US 2 over Anthracite Creek in King County, Washington. It was built in 1940, so it is 85 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 5,782 vehicles a day, roughly 5% of them trucks, projected to reach 7,808 by 2039. The structure is 45 ft (13.7 m) long and 30 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesUS 2
CrossesAnthracite Creek
Location9.8 E Snohomish CO
RouteU.S. Route 2
CountyKing County
StateWashington
Coordinates47.71203, -121.32297
Functional classRural Principal Arterial - Other

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be 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 rating23.9 US tons
Inventory rating18.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length45 ft (13.7 m)
Longest span45 ft (13.7 m)
Deck width30 ft (9.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,782 (2023)
Projected traffic7,808 by 2039
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 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$684,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 2 over Anthracite Creek built?

It was built in 1940, making it 85 years old in 2025.

What condition is US 2 over Anthracite Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.

How much traffic does US 2 over Anthracite Creek carry?

About 5,782 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is US 2 over Anthracite Creek?

The structure is 45 ft (13.7 m) long with a longest span of 45 ft (13.7 m) and a deck 30 ft wide.

Who owns US 2 over Anthracite Creek?

It is owned by the State Highway Agency.