US Bridges

9th ST SW/94th Ave over SR 512

Fair

Pierce County, Washington · 6.2 E JCT SR 7 · Structure no. 0008673E0000000

Built
1971
54 years old, rebuilt 1995
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
284 ft
4 main spans
Daily traffic
29,975
2016 count
Owner
State
State Highway Agency

About this bridge

9th ST SW/94th Ave over SR 512 is a prestressed concrete continuous stringer/multi-beam or girder carrying 9th ST SW/94th Ave over SR 512 in Pierce County, Washington. It was built in 1971 and reconstructed in 1995, so it is 54 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 5 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 29,975 vehicles a day, roughly 10% of them trucks, projected to reach 48,799 by 2038. The structure is 284 ft (86.6 m) long and 79 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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Carries9th ST SW/94th Ave
CrossesSR 512
Location6.2 E JCT SR 7
RouteCity Street 0
CountyPierce County
StateWashington
Coordinates47.15867, -122.30403
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating17.5 US tons
Inventory rating13.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length284 ft (86.6 m)
Longest span104 ft (31.7 m)
Deck width79 ft (24 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,975 (2016)
Projected traffic48,799 by 2038
Trucks10%
Lanes on structure5
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$8.9 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was 9th ST SW/94th Ave over SR 512 built?

It was built in 1971, making it 54 years old in 2025. It was reconstructed in 1995.

What condition is 9th ST SW/94th 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 9th ST SW/94th Ave over SR 512 carry?

About 29,975 vehicles per day (2016 count), of which roughly 10% are trucks.

How long is 9th ST SW/94th Ave over SR 512?

The structure is 284 ft (86.6 m) long with a longest span of 104 ft (31.7 m) and a deck 79 ft wide.

Who owns 9th ST SW/94th Ave over SR 512?

It is owned by the State Highway Agency.