US Bridges

7th Ave SE over SR 512

Good

Pierce County, Washington · 2.1 E JCT SR 161 · Structure no. 0009010D0000000

Built
1972
53 years old
Condition
Good
inspected August 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
276 ft
4 main spans
Daily traffic
3,508
2007 count
Owner
State
State Highway Agency

About this bridge

7th Ave SE over SR 512 is a prestressed concrete continuous stringer/multi-beam or girder carrying 7th Ave SE over SR 512 in Pierce 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,508 vehicles a day, roughly 10% of them trucks, projected to reach 5,950 by 2036. The structure is 276 ft (84.1 m) long and 56 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Carries7th Ave SE
CrossesSR 512
Location2.1 E JCT SR 161
RouteCity Street 0
Coordinates47.18619, -122.2825
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.9 US tons
Inventory rating46 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length276 ft (84.1 m)
Longest span100 ft (30.5 m)
Deck width56 ft (17 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,508 (2007)
Projected traffic5,950 by 2036
Trucks10%
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$6 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was 7th Ave SE over SR 512 built?

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

What condition is 7th Ave SE over SR 512 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2022.

How much traffic does 7th Ave SE over SR 512 carry?

About 3,508 vehicles per day (2007 count), of which roughly 10% are trucks.

How long is 7th Ave SE over SR 512?

The structure is 276 ft (84.1 m) long with a longest span of 100 ft (30.5 m) and a deck 56 ft wide.

Who owns 7th Ave SE over SR 512?

It is owned by the State Highway Agency.