US Bridges

Main ST (old US97) over Np RY & Ramp

FairPosted for load

Yakima County, Washington · 14.7 N JCT SR22 · Structure no. 0002661B0000000

Built
1941
84 years old
Condition
Fair
inspected April 2024
Type
Tee Beam
Concrete Continuous
Length
700 ft
12 main spans
Daily traffic
8,981
2012 count
Owner
State
State Highway Agency

About this bridge

Main ST (old US97) over Np RY & Ramp is a concrete continuous tee beam carrying Main ST (old US97) over Np RY & Ramp in Yakima County, Washington. It was built in 1941, so it is 84 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 8,981 vehicles a day, roughly 7% of them trucks, projected to reach 13,292 by 2036. The structure is 700 ft (213.4 m) long and 32 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesMain ST (old US97)
CrossesNp RY & Ramp
Location14.7 N JCT SR22
RouteCity Street 97
CountyYakima County
StateWashington
Coordinates46.53981, -120.47622
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating22.5 US tons
Inventory rating17.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans12
Design loadH 15
Structure length700 ft (213.4 m)
Longest span71 ft (21.6 m)
Deck width32 ft (9.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,981 (2012)
Projected traffic13,292 by 2036
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and railroad
Detour if closed3.1 mi (5 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$14 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Main ST (old US97) over Np RY & Ramp built?

It was built in 1941, making it 84 years old in 2025.

What condition is Main ST (old US97) over Np RY & Ramp in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2024.

How much traffic does Main ST (old US97) over Np RY & Ramp carry?

About 8,981 vehicles per day (2012 count), of which roughly 7% are trucks.

How long is Main ST (old US97) over Np RY & Ramp?

The structure is 700 ft (213.4 m) long with a longest span of 71 ft (21.6 m) and a deck 32 ft wide.

Who owns Main ST (old US97) over Np RY & Ramp?

It is owned by the State Highway Agency.