US Bridges

S 74th - S 72nd ST over I-5

Fair

Pierce County, Washington · 2.1 N JCT SR 512 · Structure no. 0005723A0000000

Built
1958
67 years old, rebuilt 1988
Condition
Fair
inspected November 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
183 ft
2 main spans
Daily traffic
31,732
2007 count
Owner
State
State Highway Agency

About this bridge

S 74th - S 72nd ST over I-5 is a concrete continuous box beam or girders - multiple carrying S 74th - S 72nd ST over I-5 in Pierce County, Washington. It was built in 1958 and reconstructed in 1988, so it is 67 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 31,732 vehicles a day, roughly 2% of them trucks, projected to reach 56,578 by 2036. The structure is 183 ft (55.8 m) long and 102 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesS 74th - S 72nd ST
CrossesI-5
Location2.1 N JCT SR 512
RouteCity Street 0
CountyPierce County
StateWashington
Coordinates47.19051, -122.46274
Functional classUrban Other Principal 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 inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81 US tons
Inventory rating48 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length183 ft (55.8 m)
Longest span89 ft (27.1 m)
Deck width102 ft (31.1 m)
Roadway width88 ft (26.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic31,732 (2007)
Projected traffic56,578 by 2036
Trucks2%
Lanes on structure8
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$7.8 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was S 74th - S 72nd ST over I-5 built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1988.

What condition is S 74th - S 72nd ST over I-5 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 November 2023.

How much traffic does S 74th - S 72nd ST over I-5 carry?

About 31,732 vehicles per day (2007 count), of which roughly 2% are trucks.

How long is S 74th - S 72nd ST over I-5?

The structure is 183 ft (55.8 m) long with a longest span of 89 ft (27.1 m) and a deck 102 ft wide.

Who owns S 74th - S 72nd ST over I-5?

It is owned by the State Highway Agency.