US Bridges

SR 509 over River RR Portland Ave

Good

Pierce County, Washington · 0.7 N JCT I-705 · Structure no. 0014409B0000000

Built
1996
29 years old
Condition
Good
inspected June 2024
Type
Segmental Box Girder
Prestressed Concrete Continuous
Length
3,584 ft
4 main spans
Daily traffic
14,925
2023 count
Owner
State
State Highway Agency

About this bridge

SR 509 over River RR Portland Ave is a prestressed concrete continuous segmental box girder carrying SR 509 over River RR Portland Ave in Pierce County, Washington. It was built in 1996, so it is 29 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 14,925 vehicles a day, roughly 5% of them trucks, projected to reach 21,927 by 2039. The structure is 3,584 ft (1,092.4 m) long and 76 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSR 509
CrossesRiver RR Portland Ave
Location0.7 N JCT I-705
RouteState Highway 509
Coordinates47.24441, -122.41844
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.2 US tons
Inventory rating36.4 US tons

Structure

Structure typeSegmental Box Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4 (+17 approach)
Design loadHS 25 or greater
Structure length3,584 ft (1,092.4 m)
Longest span445 ft (135.6 m)
Deck width76 ft (23.1 m)
Roadway width72 ft (21.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,925 (2023)
Projected traffic21,927 by 2039
Trucks5%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway, waterway and railroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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$149.8 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 509 over River RR Portland Ave built?

It was built in 1996, making it 29 years old in 2025.

What condition is SR 509 over River RR Portland Ave 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 2024.

How much traffic does SR 509 over River RR Portland Ave carry?

About 14,925 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is SR 509 over River RR Portland Ave?

The structure is 3,584 ft (1,092.4 m) long with a longest span of 445 ft (135.6 m) and a deck 76 ft wide.

Who owns SR 509 over River RR Portland Ave?

It is owned by the State Highway Agency.