US Bridges

I-5 Northbound over Hylebos Creek

Good

Pierce County, Washington · 1.2 N JCT SR 99 · Structure no. 0019540L0000000

Built
2023
2 years old
Condition
Good
inspected April 2024
Type
Slab
Prestressed Concrete
Length
81 ft
3 main spans
Daily traffic
96,536
2023 count
Owner
State
State Highway Agency

About this bridge

I-5 Northbound over Hylebos Creek is a prestressed concrete slab carrying I-5 Northbound over Hylebos Creek in Pierce County, Washington. It was built in 2023, so it is 2 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 96,536 vehicles a day, roughly 7% of them trucks, projected to reach 141,479 by 2039. The structure is 81 ft (24.8 m) long and 102 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-5 Northbound
CrossesHylebos Creek
Location1.2 N JCT SR 99
RouteInterstate 5
CountyPierce County
StateWashington
Coordinates47.24625, -122.33391
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65 US tons
Inventory rating50 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length81 ft (24.8 m)
Longest span41 ft (12.4 m)
Deck width102 ft (31.1 m)
Roadway width96 ft (29.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic96,536 (2023)
Projected traffic141,479 by 2039
Trucks7%
Lanes on structure6
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$3.8 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-5 Northbound over Hylebos Creek built?

It was built in 2023, making it 2 years old in 2025.

What condition is I-5 Northbound over Hylebos Creek 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 April 2024.

How much traffic does I-5 Northbound over Hylebos Creek carry?

About 96,536 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is I-5 Northbound over Hylebos Creek?

The structure is 81 ft (24.8 m) long with a longest span of 41 ft (12.4 m) and a deck 102 ft wide.

Who owns I-5 Northbound over Hylebos Creek?

It is owned by the State Highway Agency.