US Bridges

Mitchell Ave over SR 166

Fair

Kitsap County, Washington · 4.0 E JCT SR 16 · Structure no. 0003062A0000000

Built
1945
80 years old
Condition
Fair
inspected July 2023
Type
Tee Beam
Concrete
Length
157 ft
3 main spans
Daily traffic
5,187
2002 count
Owner
State
State Highway Agency

About this bridge

Mitchell Ave over SR 166 is a concrete tee beam carrying Mitchell Ave over SR 166 in Kitsap County, Washington. It was built in 1945, so it is 80 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 5,187 vehicles a day, roughly 5% of them trucks, projected to reach 9,420 by 2036. The structure is 157 ft (47.9 m) long and 38 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesMitchell Ave
CrossesSR 166
Location4.0 E JCT SR 16
RouteCity Street 0
CountyKitsap County
StateWashington
Coordinates47.53389, -122.62597
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJuly 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 rating37.1 US tons
Inventory rating28.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length157 ft (47.9 m)
Longest span65 ft (19.8 m)
Deck width38 ft (11.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,187 (2002)
Projected traffic9,420 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 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$2.1 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Mitchell Ave over SR 166 built?

It was built in 1945, making it 80 years old in 2025.

What condition is Mitchell Ave over SR 166 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 July 2023.

How much traffic does Mitchell Ave over SR 166 carry?

About 5,187 vehicles per day (2002 count), of which roughly 5% are trucks.

How long is Mitchell Ave over SR 166?

The structure is 157 ft (47.9 m) long with a longest span of 65 ft (19.8 m) and a deck 38 ft wide.

Who owns Mitchell Ave over SR 166?

It is owned by the State Highway Agency.