US Bridges

SB I-5 to NB SR 16 over S Tacoma Way/Strr/Center

Good

Pierce County, Washington · WB Nalley Valley · Structure no. 0017594B0000000

Built
2011
14 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
2,140 ft
14 main spans
Daily traffic
39,113
2022 count
Owner
State
State Highway Agency

About this bridge

SB I-5 to NB SR 16 over S Tacoma Way/Strr/Center is a prestressed concrete continuous stringer/multi-beam or girder carrying SB I-5 to NB SR 16 over S Tacoma Way/Strr/Center in Pierce County, Washington. It was built in 2011, so it is 14 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 39,113 vehicles a day, roughly 15% of them trucks, projected to reach 58,355 by 2039. The structure is 2,140 ft (652.3 m) long and 50 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesSB I-5 to NB SR 16
CrossesS Tacoma Way/Strr/Center
LocationWB Nalley Valley
RouteInterstate 5
CountyPierce County
StateWashington
Coordinates47.23144, -122.45814
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 inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73 US tons
Inventory rating43 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans14
Design loadHL 93
Structure length2,140 ft (652.3 m)
Longest span160 ft (48.8 m)
Deck width50 ft (15.2 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic39,113 (2022)
Projected traffic58,355 by 2039
Trucks15%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$44.7 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was SB I-5 to NB SR 16 over S Tacoma Way/Strr/Center built?

It was built in 2011, making it 14 years old in 2025.

What condition is SB I-5 to NB SR 16 over S Tacoma Way/Strr/Center 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 June 2023.

How much traffic does SB I-5 to NB SR 16 over S Tacoma Way/Strr/Center carry?

About 39,113 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is SB I-5 to NB SR 16 over S Tacoma Way/Strr/Center?

The structure is 2,140 ft (652.3 m) long with a longest span of 160 ft (48.8 m) and a deck 50 ft wide.

Who owns SB I-5 to NB SR 16 over S Tacoma Way/Strr/Center?

It is owned by the State Highway Agency.