US Bridges

Portland Ave over SR 512

Fair

Pierce County, Washington · 1.5 E JCT SR 7 · Structure no. 0007769E0000000

Built
1965
60 years old
Condition
Fair
inspected September 2024
Type
Slab
Concrete Continuous
Length
131 ft
2 main spans
Daily traffic
15,135
2016 count
Owner
State
State Highway Agency

About this bridge

Portland Ave over SR 512 is a concrete continuous slab carrying Portland Ave over SR 512 in Pierce County, Washington. It was built in 1965, so it is 60 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 15,135 vehicles a day, roughly 8% of them trucks, projected to reach 24,640 by 2038. The structure is 131 ft (39.9 m) long and 36 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesPortland Ave
CrossesSR 512
Location1.5 E JCT SR 7
RouteCounty Highway 0
CountyPierce County
StateWashington
Coordinates47.15867, -122.40261
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85 US tons
Inventory rating51 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length131 ft (39.9 m)
Longest span63 ft (19.2 m)
Deck width36 ft (10.9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,135 (2016)
Projected traffic24,640 by 2038
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 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$2.2 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Portland Ave over SR 512 built?

It was built in 1965, making it 60 years old in 2025.

What condition is Portland 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 September 2024.

How much traffic does Portland Ave over SR 512 carry?

About 15,135 vehicles per day (2016 count), of which roughly 8% are trucks.

How long is Portland Ave over SR 512?

The structure is 131 ft (39.9 m) long with a longest span of 63 ft (19.2 m) and a deck 36 ft wide.

Who owns Portland Ave over SR 512?

It is owned by the State Highway Agency.