US Bridges

Plum-N Ramp over Eastside ST SE

Poor

Thurston County, Washington · 1.2 N JCT US 101 · Structure no. 0005296A0000000

Built
1957
68 years old
Condition
Poor
inspected December 2023
Type
Slab
Concrete
Length
76 ft
1 main span
Daily traffic
6,876
2023 count
Owner
State
State Highway Agency

About this bridge

Plum-N Ramp over Eastside ST SE is a concrete slab carrying Plum-N Ramp over Eastside ST SE in Thurston County, Washington. It was built in 1957, so it is 68 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 6,876 vehicles a day, roughly 5% of them trucks, projected to reach 10,480 by 2039. The structure is 76 ft (23.2 m) long and 25 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesPlum-N Ramp
CrossesEastside ST SE
Location1.2 N JCT US 101
RouteInterstate 5
CountyThurston County
StateWashington
Coordinates47.03674, -122.88731
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating63.9 US tons
Inventory rating38 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length76 ft (23.2 m)
Longest span73 ft (22.3 m)
Deck width25 ft (7.7 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,876 (2023)
Projected traffic10,480 by 2039
Trucks5%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
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$1 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Plum-N Ramp over Eastside ST SE built?

It was built in 1957, making it 68 years old in 2025.

What condition is Plum-N Ramp over Eastside ST SE in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in December 2023.

How much traffic does Plum-N Ramp over Eastside ST SE carry?

About 6,876 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Plum-N Ramp over Eastside ST SE?

The structure is 76 ft (23.2 m) long with a longest span of 73 ft (22.3 m) and a deck 25 ft wide.

Who owns Plum-N Ramp over Eastside ST SE?

It is owned by the State Highway Agency.