US Bridges

W-S Ramp over I-82

Poor

Yakima County, Washington · 9.4 S Kittitas CO · Structure no. 0008846F0000000

Built
1970
55 years old
Condition
Poor
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
741 ft
7 main spans
Daily traffic
1,595
2023 count
Owner
State
State Highway Agency

About this bridge

W-S Ramp over I-82 is a prestressed concrete continuous stringer/multi-beam or girder carrying W-S Ramp over I-82 in Yakima 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 poor condition with a lowest component rating of 3 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 1,595 vehicles a day, roughly 12% of them trucks, projected to reach 2,009 by 2039. The structure is 741 ft (225.9 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesW-S Ramp
CrossesI-82
Location9.4 S Kittitas CO
RouteInterstate 82
Coordinates46.62639, -120.50669
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
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating72 US tons
Inventory rating42 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20 + Mod
Structure length741 ft (225.9 m)
Longest span131 ft (39.9 m)
Deck width28 ft (8.6 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,595 (2023)
Projected traffic2,009 by 2039
Trucks12%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$10.6 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was W-S Ramp over I-82 built?

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

What condition is W-S Ramp over I-82 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 April 2023.

How much traffic does W-S Ramp over I-82 carry?

About 1,595 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is W-S Ramp over I-82?

The structure is 741 ft (225.9 m) long with a longest span of 131 ft (39.9 m) and a deck 28 ft wide.

Who owns W-S Ramp over I-82?

It is owned by the State Highway Agency.