US Bridges

Port of Tacoma RD over SR 509

Good

Pierce County, Washington · 1.7 N JCT I-705 · Structure no. 0015833A0000000

Built
2001
24 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
213 ft
2 main spans
Daily traffic
11,919
2007 count
Owner
State
State Highway Agency

About this bridge

Port of Tacoma RD over SR 509 is a prestressed concrete continuous stringer/multi-beam or girder carrying Port of Tacoma RD over SR 509 in Pierce County, Washington. It was built in 2001, so it is 24 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 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 11,919 vehicles a day, roughly 10% of them trucks, projected to reach 21,252 by 2036. The structure is 213 ft (64.9 m) long and 84 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesPort of Tacoma RD
CrossesSR 509
Location1.7 N JCT I-705
RouteCity Street 0
CountyPierce County
StateWashington
Coordinates47.24747, -122.38564
Functional classUrban Other Principal 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 inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than 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 rating74 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length213 ft (64.9 m)
Longest span102 ft (31.1 m)
Deck width84 ft (25.6 m)
Roadway width69 ft (21 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,919 (2007)
Projected traffic21,252 by 2036
Trucks10%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 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$7.2 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Port of Tacoma RD over SR 509 built?

It was built in 2001, making it 24 years old in 2025.

What condition is Port of Tacoma RD over SR 509 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 November 2023.

How much traffic does Port of Tacoma RD over SR 509 carry?

About 11,919 vehicles per day (2007 count), of which roughly 10% are trucks.

How long is Port of Tacoma RD over SR 509?

The structure is 213 ft (64.9 m) long with a longest span of 102 ft (31.1 m) and a deck 84 ft wide.

Who owns Port of Tacoma RD over SR 509?

It is owned by the State Highway Agency.