US Bridges

Porter Way over I-5 Hylebos CR

Fair

Pierce County, Washington · 1.6 N JCT SR 99 · Structure no. 0006443A0000000

Built
1960
65 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
615 ft
13 main spans
Daily traffic
890
2002 count
Owner
State
State Highway Agency

About this bridge

Porter Way over I-5 Hylebos CR is a prestressed concrete stringer/multi-beam or girder carrying Porter Way over I-5 Hylebos CR in Pierce County, Washington. It was built in 1960, so it is 65 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 890 vehicles a day, roughly 1% of them trucks, projected to reach 1,616 by 2036. The structure is 615 ft (187.5 m) long and 34 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesPorter Way
CrossesI-5 Hylebos CR
Location1.6 N JCT SR 99
RouteCity Street 0
CountyPierce County
StateWashington
Coordinates47.25125, -122.33331
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
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans13
Design loadHS 20
Structure length615 ft (187.5 m)
Longest span86 ft (26.2 m)
Deck width34 ft (10.4 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic890 (2002)
Projected traffic1,616 by 2036
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and waterway
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$8.2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Porter Way over I-5 Hylebos CR built?

It was built in 1960, making it 65 years old in 2025.

What condition is Porter Way over I-5 Hylebos CR 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 Porter Way over I-5 Hylebos CR carry?

About 890 vehicles per day (2002 count), of which roughly 1% are trucks.

How long is Porter Way over I-5 Hylebos CR?

The structure is 615 ft (187.5 m) long with a longest span of 86 ft (26.2 m) and a deck 34 ft wide.

Who owns Porter Way over I-5 Hylebos CR?

It is owned by the State Highway Agency.