US Bridges

Port of Tacoma RD over I-5

Fair

Pierce County, Washington · 0.8 N JCT SR 167 · Structure no. 0006480A0000000

Built
1961
64 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
300 ft
4 main spans
Daily traffic
16,530
2008 count
Owner
State
State Highway Agency

About this bridge

Port of Tacoma RD over I-5 is a prestressed concrete stringer/multi-beam or girder carrying Port of Tacoma RD over I-5 in Pierce County, Washington. It was built in 1961, so it is 64 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 16,530 vehicles a day, roughly 5% of them trucks, projected to reach 29,027 by 2036. The structure is 300 ft (91.4 m) long and 52 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesPort of Tacoma RD
CrossesI-5
Location0.8 N JCT SR 167
RouteCity Street 0
CountyPierce County
StateWashington
Coordinates47.24172, -122.38575
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length300 ft (91.4 m)
Longest span100 ft (30.6 m)
Deck width52 ft (16 m)
Roadway width47 ft (14.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,530 (2008)
Projected traffic29,027 by 2036
Trucks5%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 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$7.4 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Port of Tacoma RD over I-5 built?

It was built in 1961, making it 64 years old in 2025.

What condition is Port of Tacoma RD 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 September 2024.

How much traffic does Port of Tacoma RD over I-5 carry?

About 16,530 vehicles per day (2008 count), of which roughly 5% are trucks.

How long is Port of Tacoma RD over I-5?

The structure is 300 ft (91.4 m) long with a longest span of 100 ft (30.6 m) and a deck 52 ft wide.

Who owns Port of Tacoma RD over I-5?

It is owned by the State Highway Agency.