US Bridges

W Main ST over SR 167

Fair

King County, Washington · 0.1 N JCT SR 18 · Structure no. 0008853A0000000

Built
1972
53 years old
Condition
Fair
inspected February 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
383 ft
4 main spans
Daily traffic
4,818
2009 count
Owner
State
State Highway Agency

About this bridge

W Main ST over SR 167 is a concrete continuous box beam or girders - multiple carrying W Main ST over SR 167 in King County, Washington. It was built in 1972, so it is 53 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 6 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 4,818 vehicles a day, roughly 5% of them trucks, projected to reach 7,680 by 2036. The structure is 383 ft (116.7 m) long and 57 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesW Main ST
CrossesSR 167
Location0.1 N JCT SR 18
RouteCity Street 0
Coordinates47.30836, -122.2495
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating69 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length383 ft (116.7 m)
Longest span146 ft (44.5 m)
Deck width57 ft (17.5 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,818 (2009)
Projected traffic7,680 by 2036
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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$11.3 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was W Main ST over SR 167 built?

It was built in 1972, making it 53 years old in 2025.

What condition is W Main ST over SR 167 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 February 2023.

How much traffic does W Main ST over SR 167 carry?

About 4,818 vehicles per day (2009 count), of which roughly 5% are trucks.

How long is W Main ST over SR 167?

The structure is 383 ft (116.7 m) long with a longest span of 146 ft (44.5 m) and a deck 57 ft wide.

Who owns W Main ST over SR 167?

It is owned by the State Highway Agency.