US Bridges

Ainsworth Ave over SR 512

Fair

Pierce County, Washington · 1.4 E JCT I-5 · Structure no. 0007024B0000000

Built
1963
62 years old
Condition
Fair
inspected April 2024
Type
Slab
Concrete Continuous
Length
212 ft
4 main spans
Daily traffic
4,900
2012 count
Owner
State
State Highway Agency

About this bridge

Ainsworth Ave over SR 512 is a concrete continuous slab carrying Ainsworth Ave over SR 512 in Pierce County, Washington. It was built in 1963, so it is 62 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 4,900 vehicles a day, roughly 8% of them trucks, projected to reach 7,722 by 2036. The structure is 212 ft (64.6 m) long and 38 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesAinsworth Ave
CrossesSR 512
Location1.4 E JCT I-5
RouteCounty Highway 0
CountyPierce County
StateWashington
Coordinates47.15817, -122.45539
Functional classUrban Minor Arterial

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 inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating90.9 US tons
Inventory rating55 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length212 ft (64.6 m)
Longest span59 ft (18 m)
Deck width38 ft (11.6 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,900 (2012)
Projected traffic7,722 by 2036
Trucks8%
Lanes on structure2
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$2.8 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Ainsworth Ave over SR 512 built?

It was built in 1963, making it 62 years old in 2025.

What condition is Ainsworth Ave over SR 512 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 April 2024.

How much traffic does Ainsworth Ave over SR 512 carry?

About 4,900 vehicles per day (2012 count), of which roughly 8% are trucks.

How long is Ainsworth Ave over SR 512?

The structure is 212 ft (64.6 m) long with a longest span of 59 ft (18 m) and a deck 38 ft wide.

Who owns Ainsworth Ave over SR 512?

It is owned by the State Highway Agency.