US Bridges

SR 7 NB over SR 7 SB Railroad

Fair

Pierce County, Washington · 5.5 N JCT SR 512 · Structure no. 0007505D0000000

Built
1966
59 years old
Condition
Fair
inspected October 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
688 ft
5 main spans
Daily traffic
14,209
2023 count
Owner
State
State Highway Agency

About this bridge

SR 7 NB over SR 7 SB Railroad is a concrete continuous box beam or girders - multiple carrying SR 7 NB over SR 7 SB Railroad in Pierce County, Washington. It was built in 1966, so it is 59 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 14,209 vehicles a day, roughly 4% of them trucks, projected to reach 19,317 by 2039. The structure is 688 ft (209.7 m) long and 50 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesSR 7 NB
CrossesSR 7 SB Railroad
Location5.5 N JCT SR 512
RouteState Highway 7
CountyPierce County
StateWashington
Coordinates47.22986, -122.42861
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating25 US tons
Inventory rating17.9 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length688 ft (209.7 m)
Longest span146 ft (44.5 m)
Deck width50 ft (15.1 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic14,209 (2023)
Projected traffic19,317 by 2039
Trucks4%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed1.2 mi (2 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$16.3 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 7 NB over SR 7 SB Railroad built?

It was built in 1966, making it 59 years old in 2025.

What condition is SR 7 NB over SR 7 SB Railroad 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 October 2024.

How much traffic does SR 7 NB over SR 7 SB Railroad carry?

About 14,209 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is SR 7 NB over SR 7 SB Railroad?

The structure is 688 ft (209.7 m) long with a longest span of 146 ft (44.5 m) and a deck 50 ft wide.

Who owns SR 7 NB over SR 7 SB Railroad?

It is owned by the State Highway Agency.