US Bridges

South 48th Street over Interstate HWY 5

Good

Pierce County, Washington · 0.0 Int. JCT I-5 · Structure no. 085261000000000

Built
1970
55 years old
Condition
Good
inspected July 2023
Type
Girder and Floorbeam System
Prestressed Concrete
Length
220 ft
2 main spans
Daily traffic
12,145
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

South 48th Street over Interstate HWY 5 is a prestressed concrete girder and floorbeam system carrying South 48th Street over Interstate HWY 5 in Pierce County, Washington. It was built in 1970, so it is 55 years old, older 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 12,145 vehicles a day, roughly 5% of them trucks, projected to reach 21,861 by 2043. The structure is 220 ft (67.1 m) long and 60 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesSouth 48th Street
CrossesInterstate HWY 5
Location0.0 Int. JCT I-5
RouteCity Street 3210
Coordinates47.21388, -122.46253
Functional classUrban Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating19.6 US tons
Inventory rating15.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length220 ft (67.1 m)
Longest span118 ft (36 m)
Deck width60 ft (18.4 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,145 (2021)
Projected traffic21,861 by 2043
Trucks5%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$5.4 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was South 48th Street over Interstate HWY 5 built?

It was built in 1970, making it 55 years old in 2025.

What condition is South 48th Street over Interstate HWY 5 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 July 2023.

How much traffic does South 48th Street over Interstate HWY 5 carry?

About 12,145 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is South 48th Street over Interstate HWY 5?

The structure is 220 ft (67.1 m) long with a longest span of 118 ft (36 m) and a deck 60 ft wide.

Who owns South 48th Street over Interstate HWY 5?

It is owned by the City or Municipal Highway Agency.