US Bridges

SR 509 Ramp over Railroad

Good

Pierce County, Washington · 0.7 N JCT I-705 · Structure no. 0014520B0000000

Built
1996
29 years old
Condition
Good
inspected November 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
1,170 ft
11 main spans
Daily traffic
3,696
2022 count
Owner
State
State Highway Agency

About this bridge

SR 509 Ramp over Railroad is a prestressed concrete continuous stringer/multi-beam or girder carrying SR 509 Ramp over Railroad 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 3,696 vehicles a day, roughly 4% of them trucks, projected to reach 5,560 by 2039. The structure is 1,170 ft (356.6 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesSR 509 Ramp
CrossesRailroad
Location0.7 N JCT I-705
RouteState Highway 509
CountyPierce County
StateWashington
Coordinates47.24431, -122.41831
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.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans11
Design loadHS 25 or greater
Structure length1,170 ft (356.6 m)
Longest span146 ft (44.5 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,696 (2022)
Projected traffic5,560 by 2039
Trucks4%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
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$15.6 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 509 Ramp over Railroad built?

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

What condition is SR 509 Ramp over Railroad 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 2024.

How much traffic does SR 509 Ramp over Railroad carry?

About 3,696 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is SR 509 Ramp over Railroad?

The structure is 1,170 ft (356.6 m) long with a longest span of 146 ft (44.5 m) and a deck 28 ft wide.

Who owns SR 509 Ramp over Railroad?

It is owned by the State Highway Agency.